March 11, 2015 Update With 30w driver amp installed, I have tested up to 130w output. (Latching relay driver) Jakub Kulczyński SP2IPT 20 czerwca 2014 W6PQL - proste, skuteczne o wielu however lacks miniaturisation and możliwościach sterowania. However, my friend Steve Gillispie, K8LZ, just happened to offer me a very nice 24/28 VDC power supply that would do the job. Relay Sequencer - Amateur Radio Station W6PQL One additional capability is useful to anyone using a radio that has a transmit inhibit feature (like the FT-897 or FT-817). Warm air is exhausted through 8 holes on the front panel. 4G system and [future] 3. It is really special to be able to talk with these folks about contesting, expeditions, receivers, preamps, oscillators, antennas, amplifiers, sequencing, phasing lines, noise problems. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. Linear Amp UK manufacture a range of high quality linear amplifiers for amateur and commercial use. Call: KB7Q QTH: South Dakota (DN83gh) and Nebraska (DN82gp) Frequency: 144. Some changes were applied to the scheme. Relays used downstream of receive pre-amplifiers may have higher loss than the antenna relay (upstream of both the receive pre-amplifier) as their loss degrades the overall system noise figure. From: [email protected] All the shipping cost from different suppliers also adds up considerably, so I try to buy more or with others. The most important function of the current sense on the static switch control board is to transfer the load from the inverter to the bypass source in the. These will be fed to a surplus SWR Panel meter and logic made by Telewave. 50 carriage and the carrier ransom fee (both plus VAT) pro-rata. com/relay_sequencer. OK1TEH released new 144MHz EME Window, written for Radiožurnál, more: 1/11, 2/11, 3/11. W6PQL and W1GHZ have sequencer. W6PQL recommends adding a fan if the low-pass filter is used at power levels higher than 500 W. I solder the parts to the board, but it is quite difficult because the parts are surface mount parts. As both amps will never transmit at the same time, I share the single power supply between. VHF Contest 201 9 by OM3KII (more), video OK2EZ, RK3T, SV1BJY, report SN7L, F8KID (pics) & video IZ8LNG. com and etc. 1 dB) High Power Band pass Filter 1. Ich würde auf jeden Fall VOX Betrieb machen. Variants include supply voltages of 12, 28 and 48 VDC. We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too. RF Man Amplifiers is a Online Electronics Store offering RF Linear Amplifier boards at very competitive prices. I used a simple 2 inch diameter ferrite transformer at the feedpoint to match the approx 20 ohm feedpoint impedance to the coax, with a 10k carbon resistor from each leg to the coax outer to bleed off any static. A comprehensive list of individual Australian radio amateurs' web pages is radio amateurs on the Net administered by Allan VK2CA. Power splitter and combiner are G10 circuit board type. The inside of the cabinet is packed full of the essentials; the RF deck, low pass filter assembly, control circuits, antenna relays and so forth. >I think many of us would use the K3 not only on HF but also for VHF > because of the excellent phase noise characteristics and dynamic > range. These relays have large contacts, rated at 16A. com Go URL Relay Sequencer - W6PQL (2 days ago) Comments? email to. Although not coaxial, the $3. August 11, 2013 by admin. You will need a SPDT relay with 12V coil. Check the bes. W6PQL and W1GHZ have sequencer. com He originally started using the LDMOS devices on 6m and up and then built the HF SSPA. Because the price of the W6PQL kit is cheap, is not there a lot of people using it? However, many SSPAs are digital modes such as JT65 and do not assume full duty operation. Front panel (front view) This panel measures 300 mm x 150 mm. io [mailto:[email protected] - Power amplifier is homebrew XRF286 (Running at 300 W CW and 400 W PEP SSB - High Power permit issued from ACMA) - LNA is WD5AGO 32dB gain with NF= 0. Band Decoder sequencer amplifier protection attenuator ATT-DN-B10 BLF188 BLF188XR VRF2933 SD2933 (controls RX-TX relay, BIAS, voltage +12V TX) First RF test of a W6PQL BLF188XR 1. It uses two XRF-286 MOSFETs in parallel and achieves 150+W output with 10W drive. Excellently made amplifier from DG0VE. SolderSmoke Daily News Sort of like these 9 cents per minute on-line relay ham stations. Sequencer has four outputs, which able to sink up to 50 V, 3 amps (P1-P4) and another output up to 30 V, 7 amps (P5) for LNA and RF Relays. 1 dB) High Power Band pass Filter 4 kW. I added a few extra components that absorb any relay switching transients as well as remove any RF on the control lines. Being one of the best nutraceutical companies in India, NWIL has carved for itself a niche in the Indian dietary supplement market. htm http://www. The circuit solution basis was taken from W6PQL. ELECTRICAL/COMPUTER ENGINEERING, THE COLLEGE OF NEW JERSEY, PO BOX 7718 EWING, NJ 08628, TEL (W 609-584-8424) OR (H 609-443-3184), FAX (609-631-0177), E-MAIL [email protected] NETNEWS EDITOR (BASED REFLECTOR NEWS) REIN, W6SZ [email protected] WITH HELP OF N4PZ AND WB2BYP INITIAL LIST G4RGK, DAVID DIBLEY, E-MAIL. The circuit solution basis was taken from W6PQL. The circuit solution basis was taken from W6PQL. com/relay_sequencer. Attiny85 VFO - Dijispark(Attiny85)を使ったVFO。 Arduino IDE1. Being able to handle the power and not increase the SWR are of course important, but input/output isolation MAY also be a concern and poorer than with relays designed for RF. 4G system and [future] 3. Connectors: Anderson powerpoles, XLR, RCA, N, SMA. I'm always looking for Radio Operation and Service Manuals. The amplifier is cool to the touch after 1/2 hour running. I built the sequencer on basic copper strip board and added four relays and “jumpers” so that for each event I could either switch the line to ground, provide 13. The equipment was the same as usual: Antennas are a pair of M2 2M7 yagis, transmitter is a W6PQL KW LDMOS amp, and the receivers are a Yaesu FT-817ND running WSJT9 software and a FunCube Pro+ Dongle running MAP65 software. On the subject of relays I couldn't resist another bargin. David M0YDH shows Ian's design in operation:- G8ADE RELAY SEQUENCER VIDEO and an updated version with extra relay for Portsdown PTT band switching. W6PQL: PA controller - High Current FT switch - Hybrid Couplers Coaxial relays NARDA and Dow-key Fans ebmpapst 4114H - 2x285 m3/h on TX mode and 2x100 m3/h in RX mode. This amplifier will produce 160w out with 10w in, all modes, (4w in 100w out). HF/6m linear amplifier 600W for digital mode palet with MRF300AN and MRF300BN 80% efficiency - Duration: 6:43. This is a nice feature to help protect external preamps. 50 carriage and the carrier ransom fee (both plus VAT) pro-rata. The controller, FET switches, low pass filter, antenna relays and bar graph indicator is from W6PQL. The circuit solution basis was taken from W6PQL. It uses two inexpensive OMRON G2RL-1-E DC12 relays purchased from Digikey. Somewhere in here I will need to fit the IF relay, a fuse block, and the 222 transverter. My quandary now is whether it will be easier to just build 2 big honking 500pF variable caps and a couple relay switched parallel caps, or if I would rather build a bajillion little fixed value caps and a. io Subject: [image-55] Experience Report and ATU Issue Hello all, I purchased assorted pre-kit parts from RF-KITS and have been slow getting BLF189 conversion perfect and 6m mods done right. This changes allow to use the sequencer in the best way in VHF radio stations conditions. Ensemble TRx 2. The TRX relays on the RF2K+ are mechanical that will probably be a little noisy for the avid QSK CW operator. From HF, VHF, UHF, 50Mhz, 70Mhz and 144Mhz through to 432Mhz and 1296MHz the DX Shop supplies Linear Amplifiers, Antennas, Aerials, Masthead Preamplifiers, LNA, Coaxial cables and connectors, sequencers and amplifiers for your ham radio station. The output of the Pre-amplifier also incorporates an adjustable 6 to 16dB variable attenuator to optimize the gain distribution for coaxial cable losses. ) relay will easily handle a kilowatt as decribed by W6PQL. 2016/03/23 - このピンは、Takashi Yoshidaさんが見つけました。あなたも Pinterest で自分だけのピンを見つけて保存しましょう!. Keying up in FM mode during testing, it lasted about 5 cycles. Stick to less than 10W and it ought to be OK though. I bought a 12 VDC six pole high current relay which switches the antenna, the drive to the gates, and the bias voltage. 2 meter band, 144 MHz 1500 W Bandpass: 144 - 148 MHz Low Loss (<0. Attiny85 VFO - Dijispark(Attiny85)を使ったVFO。 Arduino IDE1. Output SMA relay for T/R switching between XDK transverter RX path and the Spectrian amp O/P. (ARRL) | download | B–OK. com IP Server: 67. Health, Wellness and Lifestyle Company India - NWIL Neisswellness. The 144MHz Gemini 2 also incorporates a front panel switchable 13. wollte keine 150€ für eine Original Fernbedienung ausgeben, also hab ich eine 12V universal für 10€ eingebaut. Good link on using common relays for RF switching. This changes allow to use the … Sequencer PCB for LNA, PA, RF-Relays, Transceiver Read More ». The relay is controlled by the Flex Tx2 line. I purchased this from W6PQL in kit form and really. This changes allow to use the sequencer in the best way in VHF radio stations conditions. The Kenwood TS-790A that Im using on 2m generates up to 30W needs to get cut back by about 10 dB. OK1TEH released new 144MHz EME Window, written for Radiožurnál, more: 1/11, 2/11, 3/11. 5" copper spreaders ordered from W6PQL. I'm thinking of trying this relay for the T/R switch. 23cm transverters RadioclubOK2KKW wish to all readers of this web lot. txt) or read online for free. VHF Contest 201 9 by OM3KII (more), video OK2EZ, RK3T, SV1BJY, report SN7L, F8KID (pics) & video IZ8LNG. Although not coaxial, the $3. Variants include supply voltages of 12, 28 and 48 VDC. Tohtsu coax relay from FT817 for input switching between 2. Noise Figure Testing at the 2010 International EME Conference. The transfer relay is ideal for what you are trying to do. 23cm Amateur Radio. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. Power Amps: W6PQL 1KW LDMOS linears for 222 and 432. He suggested using 5pf on the input and 5pf on each output. Keying the amplifier throws the built-in input and output relays. 00 USD Input Relay, DPDT Subtotal $953. Call 1-800-424-8567. dk/seq/sequencer. It is impressive the RSP2 has a slightly better RF front end than a device that's more expensive and is only a signal splitter with a single transistor pre-amp. Connectors: Anderson powerpoles, XLR. The kit uses a high-quality double-sided PCB with silk-screen, solder-mask and through-hole plating. Located inFremont. click a picture to enlarge. 8v preamplifier supply on receive. 3 volts and generate their own +/- 5. Although 1kW + output capability is overkill, the easy availability of parts from W6PQL for this design influenced my decision. An enable signal to the sequencer will produce sequential output commands to a RX relay, a TR relay, an amplifier and a transverter automatically, plus a polarity change lockout. Find books. Noise Blanker. It is more than your relay and coax you can cook !!Your microwave oven can cook a chook on 13 cms with 800watts. Also for the record the cheaper High Gain relays has been used on my W6PQL 150W 23cm amp during the last field day contest and survived all of the abuse I put at it with no damage to the Minikits preamp off the same relay. These sometimes have proprietary pin outs and you can't find the circuit diagram on the manufacturer's web site. ibrido in RO4003 prodotto da W6PQL per dividere la potenza in ingresso e un accoppiatore di potenza in aria per sommare la potenza in uscita gentilmente fornitomi da Guenter DL4MEA. November 2013 MHz to GHz magazine page 4 5. First licensed in 1964; assigned W6PQL in 2003, which was the call first issued to my late father in 1938. When is a transfer relay not a. 00 inch aluminum chassis with N-connectors for RF and ferrite beads and 1000pF feedthru caps for coupling out the Fwd and Rev dc voltages. This relay is supplied from 50V bus. American Radio Relay League (ARRL) – LIFE MEMBER AMSAT – Radio Amateur Satellite – MEMBER #39054 / LIFE MEMBER # 2446 Digital Modes Club (DMC) – MEMBER #6429. I love W6PQL Jim's website and his kits. The transverter has an internal RX/TX relay that is controlled by the PTT output of the HF radio. I first soldered a 1N4003 diode across the coil of the relay. 012 kg Description This sequencer is designed for cooperative work with VHF radio equipment including transceiver, PA. 8V supply off. W6PQL 12 More Critical Parts Relays and transfer switches • RFPARTS ( www. When 12 V is removed during TX, a relay in preamp2 will ground the input and protect the electronic circuit. installations. The PA PCB is actually mounted on the back flange of the box with the RA18H1213G mounted through a rectangular slot cut in the diecast box directly onto the heatsink. I first soldered a 1N4003 diode across the coil of the relay. This pallet offered several design changes compared to the original F1JRD design. The transverter has an internal RX/TX relay that is controlled by the PTT output of the HF radio. W6PQL, Jim Klitzing is a retired HPengineer. The amplifier was a very rugged amplifier and designed as a two final tube amplifier using the 3-500 or similar tube. com - amateur radio station w6pql This is a free and comprehensive report about w6pql. 00 USD 1 LPF and dual directional detector, 2m kit $20. Amplifier for 6 144 MHz Part I BY EDWARD L. This is a +12V-on-transmit output that feeds to the Minikits EME66 coax changeover relay PCB, noting that it requires +12V in. Now it runs as the DRIVER! yes driver to my large W6PQL style amplifier in the other section. This changes allow to use the sequencer in the best way in VHF radio stations conditions. All the shipping cost from different suppliers also adds up considerably, so I try to buy more or with others. During a fault, the relay connected to the optical system performed the same as the relay connected to the main protection system, verifying the functionality of the optical/LEA scheme. Amateur Radio Station W6PQL w6pql. 1 dB) High Power Band pass Filter 1. 5" aluminum heat sink with (3) 80mm 38 CFM fans. 50 carriage and the carrier ransom fee (both plus VAT) pro-rata. As asked I have started to catalogue the references I have follow the link on the left where you can obtain them too. Although not coaxial, the $3. The first system was supplied by WD5AGO and consisted of an Eaton 2075 with an HP346 noise source and calibrated 10. com/relay_sequencer. com/using_inexpensive_relays. The RF2K+ is just now being released for the US kit builder. txt) or read online for free. the replacement of the “RF pallet” (by a W6PQL module, using the transistor BLF188XR from NXP) and an update of the Arduino software. This is a test of my 1296 Mhz 160W Power Amplifier than I built, based in a W6PQL pallet, use 2x MRF286 transistors, built in power supply (110/220Vac), PTT control, temperature control and TX/RX internal relays. Pour info, une mesure rapide, et donc approximative, du spectre de sortie 160m d'une palette W6PQL (pas exactement le même transistor, mais circuit assez semblable) sur 50 ohms donne les résultats suivants : H1 0 dB H3 -10 dB H5 -16 dB H7 -21 dB H9 -26 dB H11 -31 dB En supposant 1 kW de H1, on obtient : H1 0 1000. com is hosted in on a server with an IP address of 67. However, my friend Steve Gillispie, K8LZ, just happened to offer me a very nice 24/28 VDC power supply that would do the job. Unfortunately the reduction drive went from 1:19 to 1:9…, the tuning capacitor only has a 180 deg. 432 AND ABOVE EME NEWS SEPTEMBER 2014 VOL 42 #8 EDITOR: AL KATZ, K2UYH; DEPT. This changes allow to use the sequencer in the best way in VHF radio stations conditions. Each line going to the relays is connected to a front panel led which shows which band has been selected. LPF low pass filter 1. A spacer plus holes in the mounting frame clear the through hole pins of the T/R relay. Barely Works Technology - 23 cm EME back to Barely Works Technology page 23 cm EME is the most difficult and expensive of the challenges. Much like the beacon keyer presented here earlier, this RX/TX sequencer is a simple but useful little device. Здравствуйте! У меня для защиты входа МШУ на 23 см установлено реле РПА-14. DK2ZF Sonntag, 21:38. or Best Offer. Those of you who have been following this project evolve will have seen how I soldered the transistor to the heat-spreader and before that how I machined the heat-spreader & heat-sink after their initial use. The transverter has an internal RX/TX relay that is controlled by the PTT output of the HF radio. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. Filters PC Board Filters Using Inexpensive Relays 600w 23cm LDMOS Amplifier XRF-286 Amplifiers for 23cm 150W 23CM Turn-Key Amplifier 300w 23cm Amplifier 200w 23cm Amplifier 100w 23cm "brick" 100w 23cm Transverter 60w 23 cm Amplifier 23 CM Beacon. + RDS Series SPDT RF Coaxial Relay « Последнее редактирование: 22 Февраль 2020, 22:14:06 от Михалыч ». I use similar for 2-meter systems with good results. -----FromW6PQL: Relay boards (for TX/RX switching). (SOLD) For Sale: 150 Watt 23cm Power Amplifier March 5, 2018 by admin Based on the highly regarded PE1RKI power amplifier module, this is a fully assembled and tested – ready to use – 150 watt 1296 MHz power amplifier being offered for sale. I like Jim’s boards because they have never let me down and have a complete lack of digitalness. My 144MHz EME system uses a W6PQL based sequencer which has worked very well over a number of years. 00 USD Input Relay, DPDT Subtotal. LPF low pass filter 1. Please pass on that I am available for skeds. Keying up in FM mode during testing, it lasted about 5 cycles. (The first tests with Photoshop were not so beautiful). Upper row: 10-segment output meters (forward and reflected power). The heart of the sequencer is the Relay Sequencer, which is a kit developed and sold by W6PQL. From the Low Pass Filter Assembly the RF goes back to the R/R switch and then on to the output Directional Coupler Assembly, which measures the output power and the output SWR. I had a relay shut off RX to the SDR when TX sensed (grabbed from N6BM miniboots) to protect the SDR front end added at last minute. W6PQL and W1GHZ have sequencer. Part I - Harris Platinum RF Deck for 50 MHz. Some changes were applied to the scheme. The detected voltage is displayed on an LED bar graph board from W6PQL. The board is from w6pql. These relays have large contacts, rated at 16A. org The American Radio Relay League (ARRL) Pageglimpse. Server power supplies are high-quality, heavy-duty, 24/7 supplies but cheap, less than AU$100. The website w6pql. The first system was supplied by WD5AGO and consisted of an Eaton 2075 with an HP346 noise source and calibrated 10. Pour info, une mesure rapide, et donc approximative, du spectre de sortie 160m d'une palette W6PQL (pas exactement le même transistor, mais circuit assez semblable) sur 50 ohms donne les résultats suivants : H1 0 dB H3 -10 dB H5 -16 dB H7 -21 dB H9 -26 dB H11 -31 dB En supposant 1 kW de H1, on obtient : H1 0 1000. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. It is supposed to produce 140 watts with a freq response of 2-30 MHZ and can supposedly handle up to 5 watts of driving power. The SSPA for 13cm is home-build using an old UMTS-amplifier. changeover relays W6PQL (www. /* ///// /// /// /// SOLID STATE POWER AMPLIFIER READOUT & PROTECTION CIRCUIT /// /// /// ///// By ON7EQ 02/2015 Revised V11 on 10-12-2018 for 1. They sell a sequencer board with the normal pull down outputs plus a switched high side to drive the masthead preamp and relay based on the w6pql circuit. 6m Antennas 4m 6m Dual Band Antennas 4m Antennas 2m Antennas Dual Band Antennas 2m 70cm 70cm Antennas 23cm Antennas 13cm Antennas Commercial Antennas Band Pass Filters EME2 - EME3 BPF LNA T/R Relay Low Noise Amplifiers Power Splitter Divider Combiner HF Antennas 2. Have had a look at the board - looks okay, but general observations and recommendations from building several on 50/70/144MHz: * I can't see where the fixing holes are on the PCB? * you need a precision machined copper spreader about 3/8" thick and 6" x 4" in size between it and the main heatsink - PE1RKI makes these * the gates of the FET are delicate, the source/drain is robust * check the. Band Decoder sequencer amplifier protection attenuator ATT-DN-B10 BLF188 BLF188XR VRF2933 SD2933 (controls RX-TX relay, BIAS, voltage +12V TX) First RF test of a W6PQL BLF188XR 1. W6PQL, Jim Klitzing is a retired HPengineer. For this project I'm using his Ultimate Amplifier Control Board as my sequencer. Being one of the best nutraceutical companies in India, NWIL has carved for itself a niche in the Indian dietary supplement market. Connectors: Anderson powerpoles, XLR, RCA, N, SMA. A phono socket was added to the back panel for the Transverter. Le plus important site de vente de matériel radio amateur d'occasion en France. Nice article K1JT. TDA2004-datsheet. January 10, 2018 By N4GA - Rob 15 Comments. The LEA output was connected to a line protection relay, shadowing a conventional protection system (using a similar relay with magnetic instrument transformers). Why 23 cm EME? It has the quietest sky noise still with low libration rates (2010 ARRL Handbook Section 30. As asked I have started to catalogue the references I have follow the link on the left where you can obtain them too. The amplifier is cool to the touch after 1/2 hour running. One daughter is an engineer, the other a CPA. The transfer relay is ideal for what you are trying to do. The Pacific Northwest VHF Conference included W6PQL's talk "SSPA's - A QRO UPDATE. This amplifier will produce 160w out with 10w in, all modes, (4w in 100w out). Front panel. With as little as 2 watts in you can have over 1000 watts out. Like the W6PQL design, the PE1RKI (Bert Modderman) amp uses a pair of XRF-286 transistors, but comes fully assembled and tested AND worked out cheaper (Dec 2012) than stuffing around building your own. Before you ask, no it is not the original relay from this or any other TV2! It is a relay I found in my junk box, and is used to energize the TV2 external power supply (I'm using a Heathkit PS-23) when I switch on the transceiver. Good link on using common relays for RF switching. Below input combiner there is placed the air-dielectric output combiner recalculated from the professional 450 MHz Kathrein 3dB hybrid. Requires 12 VDC and 28 VDC PS – not included. The other relay visible in the photo, which coincidentally is a 3PDT, is not used for T/R switching. Perhaps I could use it to run a Hall sensor, or some contacts cannibalised from a small DC relay. The antenna changeover relay assembly has SMA connections and uses RG316 minature coax to the PA & RX inputs and a Cellfoil 9006 lead back to the bulkhead N antenna connector. you too can generate the same EIRP power !!For further information please refer to my web site where you will find my EMRCalc. 00; Description: A sequencer is the key to protecting those expensive microwave or other antenna relays from hot-switching (which destroys the contacts). The transmitting side is directly connected to the PA via the relay just below the antenna. Furthermore GEMINI is a complete turnkey solution incorporating a complete 50V linear power supply so no external PSU is required. These relays have large contacts, rated at 16A. This is a test of my 1296 Mhz 160W Power Amplifier than I built, based in a W6PQL pallet, use 2x MRF286 transistors, built in power supply (110/220Vac), PTT control, temperature control and TX/RX internal relays. 3000 Watt PEP LDMOS Amplifier. The amp board is mounted inverted in the utility box frame as shown in Figure 6. Time to examine the module Sure enough, in the quiet receive state no 9V was being supplied to the receiver chain by the relay. The two spreaders are then mounted to a 10" X 10" X 3. Check the. com for instruction to build the input transformer. On 1/3/2020 10:32 AM, Roger Hackler wrote: Greetings, I was doing a little design work and generated this block diagram. Our range includes HF, VHF and UHF amplifiers. 1 KW 2M LDMOS Amplifier - W6PQL. LPF low pass filter 1. Has anyone got any experience of the russian Rew14 relays, I need to replace several masthead relays in our contest kit and can get the 12v version of the rew14 releativly cheeply, The Rew14 is the 50ohm version of these relays, Apart from needing special plugs that come with them, anyone aware of any. 626 data wih 10dB, seems disturbing the whole passband. com - amateur radio station w6pql This is a free and comprehensive report about w6pql. The I/O is mounted in a box to shield from RF. edu netnews editor (based reflector news) rein, w6sz pa0zn(x)arrl. Relay Sequencer - W6PQL. The first thing I tackled was to wire up the CX-600NL relay that switches the Elecraft K3S between the RX (receive) line and the TX (transmit) line to the W6PQL solid-state amp. The capacitors supplied with the kit. This sequencer is designed for CO-OP work with VHF radio equipment including transceiver, PA and LNA. These will be fed to a surplus SWR Panel meter and logic made by Telewave. The amp is controlled with a amplifier control board from W6PQL with a couple of mods. AG6K Amplifier Mods K4PWO Drake L4-B Amplifier Modification Boat Anchor Archives - Free Manuals T Pad / H Pad Resistance Calculator WB8ERJ Homebrew 813 Linear Amplifier Cal Tech RF & Microwave Group. the user inputs the relay setting values that will be used to. These are pretty good little relays, and can be purchased in 8A (DPDT) or 16A (SPDT) configurations with many coil voltage options. VK3XDK PLL board bolted on top of transverter board, sitting horizontal. 50 but price is available on application. The heart of the sequencer is the Relay Sequencer, which is a kit developed and sold by W6PQL. with news, information and resources. the cores for the input transformer are laird 28b0375-300 i bought these from digikey. Coax relays Power supply Than the expensive bits 2 x MRF286 with flanges (US$ 30 each from me) 1 x PCB for Duo MRF26 (US $40 from Jim W6PQL). PowAbeam antennas 2-3 weeks from order. Honeywell Sensing and. htm http://www. 012 kg Description This sequencer is designed for cooperative work with VHF radio equipment including transceiver, PA. 00 USD Input Relay, DPDT Subtotal $953. He is an avid VHF, UHF and microwaveoperator. dk/seq/sequencer. 4G system and [future] 3. Seller assumes all responsibility for this listing. I have modified my sequencer (based on the W6PQL design) to accommodate both 12v and 24v relays. Old reconditioned dial meter and shielded. On the subject of relays I couldn't resist another bargin. I'm working on a solid state 1kW HF amp and need to build a T/R switch for it. com, forums. Normally the relay (or relays, a lot of amps use two of them) "bypass" the amplifier completely in standby (RX or OFF) by patching the input (TRANSCEIVER) port directly to the output (ANTENNA) port, leaving no part of the amplifier connected at all, then switch the input port to the TX input of the amp and the output port to the antenna on XMIT. I need to be able to bypass the amp for barefoot operation thus a 2PDT relay is needed or 2 seperate RF relays. 50 but price is available on application. The result is like "exit of factory". 1 KW SSPA for 1. I bought a 12 VDC six pole high current relay which switches the antenna, the drive to the gates, and the bias voltage. Filters PC Board Filters Using Inexpensive Relays 600w 23cm LDMOS Amplifier XRF-286 Amplifiers for 23cm 150W 23CM Turn-Key Amplifier 300w 23cm Amplifier 200w 23cm Amplifier 100w 23cm "brick" 100w 23cm Transverter 60w 23 cm Amplifier 23 CM Beacon. This 1296MHz PA is based on W6PQL's published information and available to purchase boards from his site. The world of -30dB. VK4CP Sequencer board at front. com and etc. A 4-port transfer relay is used to switch the amplifier in to the transmit path. Vacuum relay QSK. That projecting pin looks like it would operate an aux contact. The circuit solution basis was taken from W6PQL. This would drive a W6PQL XRF-286 amplifier nicely. Buyer welcome to collect from S66. This is a test of my 1296 Mhz 160W Power Amplifier than I built, based in a W6PQL pallet, use 2x MRF286 transistors, built in power supply (110/220Vac), PTT control, temperature control and TX/RX internal relays. Perhaps I could use it to run a Hall sensor, or some contacts cannibalised from a small DC relay. Continue this thread. com/relay_sequencer. pdf), Text File (. Other than a trip which might get the odd mention I will detail projects I am working on, what I want to be working on and what I have otherwise to report on. 8V supply off. 00 USD Input Relay, DPDT Subtotal $953. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. First licensed in 1964; assigned W6PQL in 2003, which was the call first issued to my late father in 1938. This is a great amplifier for any handheld (HT) or QRP rig that you want to get more oomph out of it. Old reconditioned dial meter and shielded. Linear Amp / Gemini Amplifier orders currently AUGUST delivery. W6pql vend ce module en kit ou monté / testé pour 20 US$. Filters PC Board Filters Using Inexpensive Relays 600w 23cm LDMOS Amplifier XRF-286 Amplifiers for 23cm 150W 23CM Turn-Key Amplifier 300w 23cm Amplifier 200w 23cm Amplifier 100w 23cm "brick" 100w 23cm Transverter 60w 23 cm Amplifier 23 CM Beacon. A fan mounted. The PC board is professionally fabricated and is Ideally the amplifier should survive no antenna, a shorted antenna, high SWR due to snow/ice and any other combination. 6 meter amp henry 2006a 1 tube 3cx800a full out put amp looks like new you can be the king of 6 meter 1250. The circuit solution basis was taken from W6PQL. I added a few extra components that absorb any relay switching transients as well as remove any RF on the control lines. The domain w6prc. Kit cost me $199. The four relays close in order, with a delay of around 150 milliseconds each. W6PQL states on his website that he "…replaced the 22k resistor in the bias circuit with a 5k, and added a 5k thermistor in parallel with that. This changes allow to use the sequencer in the best way in VHF radio stations conditions. I picked up a W6PQL 6M 100W, 10dB attenuator for this project and have it mounted to the heat sink, wired in a box. Look at most relevant Relay for power amplifier websites out of 1. A second thermistor on the RF deck senses. At that time I wrote that I have no experiences with such a high band so I wrote a brief facts about 23cm only. Ldmos 2m Pa Part 1. Other than a trip which might get the odd mention I will detail projects I am working on, what I want to be working on and what I have otherwise to report on. He has introduced a series of LDMOS amplifier modules and a complete family of 1kW amplifiers covering 160m through 23cm. Each line going to the relays is connected to a front panel led which shows which band has been selected. Attiny85 VFO - Dijispark(Attiny85)を使ったVFO。 Arduino IDE1. It will be updated as we proceed. The inside of the cabinet is packed full of the essentials; the RF deck, low pass filter assembly, control circuits, antenna relays and so forth. The whole lot was put up in the dark so to avoid any issues with nosey neighbors and was brought down again before dawn. If you want to buy cheap 23cm amplifier, choose 23cm amplifier from banggood. uk/2m-eme/sequencer/ http://www. Warm air is exhausted through 8 holes on the front panel. This changes allow to use the … Sequencer PCB for LNA, PA, RF-Relays, Transceiver Read More ». The relay is controlled by the Flex Tx2 line. If that all sounds a bit too hard then you can order a W6PQL filter board online, complete with relays. Please dont use transfer relays for my amplifiers. pdf), Text File (. Variants include supply voltages of 12, 28 and 48 VDC. Postage and packaging. - Power amplifier is homebrew XRF286 (Running at 300 W CW and 400 W PEP SSB - High Power permit issued from ACMA) - LNA is WD5AGO 32dB gain with NF= 0. The first system was supplied by WD5AGO and consisted of an Eaton 2075 with an HP346 noise source and calibrated 10. These relays have large contacts, rated at 16A. Front panel (front view) This panel measures 300 mm x 150 mm. QSO’d were at 1140 OK2DL (59/55) JN, 1220 UA4HTS (56/55) LO, 1230 UA3PTW (56/55) KO, 1235 VK3UM (55/56) QF, 1240 DK7LJ (59/33) JO, 1253 PI9CAM (58/57) JO, 1256 DL6SH. Since I did not have that supply voltage available, I was planning on using a Boost Regulator from W6PQL to provide the necessary power for that relay. When 12 V is removed during TX, a relay in preamp2 will ground the input and protect the electronic circuit. The inside of the cabinet is packed full of the essentials; the RF deck, low pass filter assembly, control circuits, antenna relays and so forth. zorunlu hallede belki kullanilabilir ama, RF role var ise daha iyi olur) Kontrol Kutusu (Ardunio ile isi, swr, voltaj, sequencer on panel guc gostergesi vs herseyi yapiyorlar) Filtre (Kit halinde satildigi gibi , ev yapimi bir filtre de olabilir). 5 ports 4 event sequencer US4ICI design This sequencer is designed for CO-OP work with VHF radio equipment including transceiver, PA and LNA. 8v preamplifier supply on receive. Rege A note about relay impedance. manual jld612. W6PQL 12 More Critical Parts Relays and transfer switches • RFPARTS ( www. The Linear Amp UK Discovery 70 utilises a single Russian GS31 triode and will produce up to 900 Watts output with 100W of drive. Frecvenţa de ieşire este 145,725 MHz şi frecvenţa de intrare 145,125 MHz (shift -600 kHz). W6PQL: PA controller - High Current FT switch - Hybrid Couplers Coaxial relays NARDA and Dow-key Fans ebmpapst 4114H - 2x285 m3/h on TX mode and 2x100 m3/h in RX mode. The two spreaders are then mounted to a 10" X 10" X 3. I have highlighted the key word above. I have as-of-yet to see whether it will. Здравствуйте! У меня для защиты входа МШУ на 23 см установлено реле РПА-14. com is hosted in on a server with an IP address of 67. 3000 Watt PEP LDMOS Amplifier. ", this is a mod for me to do at some point in the future. Yuck I say! Both Don and Doc talked about the work of W6PQL. 2G 75W & 150W Amps! 902/903 Mhz 33cm 130W Amplifiers! AVAILABLE NOW! These make great repeater amps for 927 repeaters. The second amp is a kit which can be purchase as-is or I can assemble it (30-day delivery). 2016/03/23 - このピンは、Takashi Yoshidaさんが見つけました。あなたも Pinterest で自分だけのピンを見つけて保存しましょう!. Some changes were applied to the scheme. The 28V main voltage is supplied to the amplifier contentiously. With as little as 2 watts in you can have over 1000 watts out. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. This radio, right out of the box, could not legally be used by U. The new layout uses a 12v Ducommun 2N1B11 relay with a separate feeder for transmit. Item location: Brisbane SW suburbs. The result is like "exit of factory". Connectors: Anderson powerpoles, XLR. This sequencer is designed for CO-OP work with VHF radio equipment including transceiver, PA and LNA. It uses two inexpensive OMRON G2RL-1-E DC12 relays purchased from Digikey. ) relay will easily handle a kilowatt as decribed by W6PQL. Although not coaxial, the $3. All brass anode stripline - silver plated on request for minimal losses and long term stable operation. The detected voltage is displayed on an LED bar graph board from W6PQL. 2014 Handbook Companion Software. 31 Million at KeywordSpace. I picked up a W6PQL 6M 100W, 10dB attenuator for this project and have it mounted to the heat sink, wired in a box. this accomplishes the bias and rf connections. Relay #4 releases the TX Inhibit signal on the FT-817ND radio allowing it to transmit. F5DQK – 4 octobre 2010 Ensemble 2,3 GHz transverter + ampli + sequencer rel 3 1 Ensemble TRx 2. This changes allow to use the sequencer in the best way in VHF radio stations conditions. Cathodic Protection Design - Free download as Powerpoint Presentation (. I’m ordering some stuff from W6PQL, including a couple of his $20 4 step sequencer kits if anyone wants to share the $17. 432 AND ABOVE EME NEWS SEPTEMBER 2014 VOL 42 #8 EDITOR: AL KATZ, K2UYH; DEPT. These relays have large contacts, rated at 16A. Le module est utilisable avec des relais 12 et 24 V avec PTT positif ou négatif. Few more words of RSGB' VHF manager to 23cm threat by Galileo navigation. If you have ever blown up your new GasFET preamp or hard-to-find coaxial relay, or are just plain worried about It, this transmit / receive Time Delay Generator. 8 GHz WLAN WiFi Antenna FM - TV Antenna Amplifiers Diplexers Ham Radio. Ensemble TRx 2. Здравствуйте! У меня для защиты входа МШУ на 23 см установлено реле РПА-14. 50 carriage and the carrier ransom fee (both plus VAT) pro-rata. This changes allow to use the … Sequencer PCB for LNA, PA, RF-Relays, Transceiver Read More ». com Looking down from the top of the amp, at bottom center is a surplus Narda dual directional coupler, a 30db coupler normally used at 900 MHz, it is quite broadband, and has a coupling factor of about 42db at 144 MHz, just right for monitoring forward and reflected power at the kw level. When +12V DC is applied to preamp2 via the bias-T, the preamp is in RX mode. The amplifier was a very rugged amplifier and designed as a two final tube amplifier using the 3-500 or similar tube. Band Decoder sequencer amplifier protection attenuator ATT-DN-B10 BLF188 BLF188XR VRF2933 SD2933 (controls RX-TX relay, BIAS, voltage +12V TX) First RF test of a W6PQL BLF188XR 1. com) - Tohtsu, Dow Key • Surplus Sales of Nebraska - Tohtsu, Dow Key • EBay • WWW. Having looked at many different solutions I found that the W6PQL sequencer met my requirements the closest. PowAbeam antennas 2-3 weeks from order. 00 USD Total $995. This is a test of my 1296 Mhz 160W Power Amplifier than I built, based in a W6PQL pallet, use 2x MRF286 transistors, built in power supply (110/220Vac), PTT control, temperature control and TX/RX. When activated by the driving transceiver - my K3 - the antenna is. This is a great amplifier for any handheld (HT) or QRP rig that you want to get more oomph out of it. We got it. Granberg in document AR305. 2G 75W & 150W Amps! 902/903 Mhz 33cm 130W Amplifiers! AVAILABLE NOW! These make great repeater amps for 927 repeaters. 3 volt supply is sufficient. 00 USD Shipping and handling $42. Frecvenţa de ieşire este 145,725 MHz şi frecvenţa de intrare 145,125 MHz (shift -600 kHz). Would appreciate comments. Marconi memorial contest VHF by F1AKK. When is a transfer relay not a. The whole lot was put up in the dark so to avoid any issues with nosey neighbors and was brought down again before dawn. 12MHz design operating in class. From HF, VHF, UHF, 50Mhz, 70Mhz and 144Mhz through to 432Mhz and 1296MHz the DX Shop supplies Linear Amplifiers, Antennas, Aerials, Masthead Preamplifiers, LNA, Coaxial cables and connectors, sequencers and amplifiers for your ham radio station. My solution was a DC to DC converter. W6PQL recommends adding a fan if the low-pass filter is used at power levels higher than 500 W. Sometimes you can use inexpensive components as a replacement for the more exotic ones. A board level product, it includes the switching logic and relay drivers to easily interface between your Elecraft® K3, Yaesu® radio or computer and the antenna switches. An Eltek Flatpack2 HE 48V/2000W rectifier is being used as the power supply for a 23cm 600W LDMOS Power Amplifier project. Sequencer has four outputs, which able to sink up to 50 V, 3 amps (P1-P4) and another output up to 30 V, 7 amps (P5) for LNA and RF Relays. So the thing labelled "gubbins" in the diagram above is actually a sequencer. htm นี้ครับ ผมพยายามหา. 1 dB) High Power Band pass Filter 4 kW. I note that W6PQL uses a transfer relay in his 150W 23cm amp project. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. You can also see one of W6PQL's FET DC switching boards which is used to switch pre amp power. amateurs on three of its four "bands". with a way to power it and my RF relays that use 12 Vdc. I picked up a W6PQL 6M 100W, 10dB attenuator for this project and have it mounted to the heat sink, wired in a box. (SOLD) For Sale: 150 Watt 23cm Power Amplifier March 5, 2018 by admin Based on the highly regarded PE1RKI power amplifier module, this is a fully assembled and tested – ready to use – 150 watt 1296. Relay for power amplifier found at glolab. I picked up W6PQL's copper plates, and 65v solid state relays. The main device's assignment - ensure the inclusion order of devices listed above with correct order and delays. Rege A note about relay impedance. Relay #2 removes power from the bypass relays putting them in safe mode. Check the bes. Ensemble TRx 2. Display +50v current consumption (with peak hold). This 1296MHz PA is based on W6PQL’s published information and available to purchase boards from his site. This amplifier is the size of a brick, probably costs less and is a much better product, in my view. Barely Works Technology - 23 cm EME back to Barely Works Technology page 23 cm EME is the most difficult and expensive of the challenges. The only Relay I had was a latching type so I have made a board from W6PQL to drive the relay from a grounded line: This board looked like this when I had it under test: And this is what the latching signal looked like before I added some diodes on the relay coils:. -----FromW6PQL: Relay boards (for TX/RX switching). It uses two inexpensive OMRON G2RL-1-E DC12 relays purchased from Digikey. Anyone here ever hear of, or deal with Communications Concepts Inc. I love W6PQL Jim's website and his kits. These relays have large contacts, rated at 16A. From: [email protected] there is an additional description of a sequencer in the 300w 23cm amplifier article listed on the left. In past I wrote in Radiojournal magazine serial story about first QRP EME QSO, where I mentioned also 23cm band. This is done with a built in 15 – 20 millisecond delay (per the instructions; ARRL Lab testing showed the delay to be 12 ms) to be sure the relays are closed before bias voltage is applied to the gates of the LDMOS device. The amp board is mounted inverted in the utility box frame as shown in Figure 6. Having looked at many different solutions I found that the W6PQL sequencer met my requirements the closest. Many of my illustrations are from his website. I have highlighted the key word above. Check the bes. Keying Relay Circuit Kit. W6PQL 12 More Critical Parts Relays and transfer switches • RFPARTS ( www. The transverter has an internal RX/TX relay that is controlled by the PTT output of the HF radio. The SSPA for 13cm is home-build using an old UMTS-amplifier. From HF, VHF, UHF, 50Mhz, 70Mhz and 144Mhz through to 432Mhz and 1296MHz the DX Shop supplies Linear Amplifiers, Antennas, Aerials, Masthead Preamplifiers, LNA, Coaxial cables and connectors, sequencers and amplifiers for your ham radio station. A switch on the front panel simply routes 12 volts to the needed set of relays. May 22, 2019: Modification moving dual preamps, TR relays, and polarity relay completed, with new. ", this is a mod for me to do at some point in the future. I fed DC up the dipole feeder to a vacuum relay to switch in a 330pF mica cap in one leg to detune the dipole on receive. 6 & 2 meter LDMOS 1KW Linear Amplifiers The amplifier was designed by Jim W6PQL As the solid state relay only draws 4 ma, the battery should last for quite a long time and I have no voltages within the amplifier enclosure higher than 50 volts. This Low Pass Filter (LPF) kit is based on the G-QRP technical pages design by Ed Whetherhold W3NQN. com and you'll find my email. 0000 12V Relay (Miniature) SPDT 16A relays as my replacements sourced from Rapid Electronics in the UK, but these relays are universally available, as are different manufacturers. Como en el cuento anterior (Mis primeros pasos en EME [144MHz]) ahora le tocó el turno de 1296MHz. 432 and above eme news march 2015 vol 43 #3 editor: al katz, k2uyh; dept. It uses two inexpensive OMRON G2RL-1-E DC12 relays purchased from Digikey. 8V supply off. Here, 3 Low noise amplifiers Outdoor unit with DB6NT parts completed. Russian Coaxial relays ian hope #190. La platine de pilotage de relais 'latching' de W6pql permet de gérer un relais 'latching' appelé aussi 'bistable' comme un relais 'classique' appelé aussi 'monostable'. farmfreshhosting. my need for this was that I only had a Yaesu FT1D HT for C4FM and needed something that had more than 5 watts out when distance from the repeater. The DX Shop - Antennas, Amplifiers and Accessories for the dedicated Radio Amateur. Some changes were applied to the scheme. Figure 5 — Layout of the power supply. His pricing is fair andreasonable. Sequencer has four outputs, which able to sink up to 50 V, 3 amps (P1-P4) and another output up to 30 V, 7 amps (P5) for LNA and RF Relays. On the subject of relays I couldn't resist another bargin. Tests done by W6PQL to improve the RF isolation of the Relays due to stray capacitance has been incorporated to protect the Pre-amplifier from damage when used with high power RF Amplifiers. generic relay for other applications on a secondary. Tubes are out, and LDMOS solid state devices no bigger then your little finger are in. com - amateur radio station w6pql This is a free and comprehensive report about w6pql. Here, 3 Low noise amplifiers Outdoor unit with DB6NT parts completed. 99 Million at KeywordSpace. AG6K Amplifier Mods K4PWO Drake L4-B Amplifier Modification Boat Anchor Archives - Free Manuals T Pad / H Pad Resistance Calculator WB8ERJ Homebrew 813 Linear Amplifier Cal Tech RF & Microwave Group. Want to email me wander over to qrz. The RF relay is a little Swedish made GHz SMA relay (branded Philips) whilst DC voltage is sequenced to the relay, amplifier bias (12V) and the the transverter PTT using a W6PQL sequencer and a band of 12V miniature relays. I decided to test the ATU that I never use and seek some advice. The relay is controlled by the Flex Tx2 line. the user inputs the relay setting values that will be used to. The Toroids are quite large for the application but i thought better to over engineer that have things fails. The RF board and layout is based on W6PQL design. The 28V main voltage is supplied to the amplifier contentiously. 626 data wih 10dB, seems disturbing the whole passband. On the subject of relays I couldn't resist another bargin. The LEA output was connected to a line protection relay, shadowing a conventional protection system (using a similar relay with magnetic instrument transformers). into a 50 ohm load thanks. I’m ordering some stuff from W6PQL, including a couple of his $20 4 step sequencer kits if anyone wants to share the $17. View page In ghost mode, only threads with non-archived posts will be shown. txt) or view presentation slides online. 2 meter ) with the w6PQL all in one case , we can share the resources , meters power supply , fans etc , the unit drives 2 mast mounted units with the hi power relays and LNA in each. 4 GHz Signal Source - W6PQL · 900 MHz Signal Source - W6PQL · 1104 MHz Signal Source - W6PQL · 1296 MHz Signal Spurce - W6PQL · 116 MHz High Level X-tal LO · 10 GHz LO Multiplier - N1BWT · 404 MHz LO - AA5C · 12 GHz Signal Source - DB6NT. ContestCalendar. Is your DX operation hungry for power? Feed it with a power amplifier from DX Engineering. (Compare this to USD$1700 + shipping for a W6PQL 150W 23cm power amplifier) Ready to use - plug 'n play. I needed an input relay for one of my VHF. io Subject: [image-55] Experience Report and ATU Issue Hello all, I purchased assorted pre-kit parts from RF-KITS and have been slow getting BLF189 conversion perfect and 6m mods done right. Goal is to be able to use both Yagi antennas and a tri band vertical on each separate frequency with one main feedline to the antenna installation. Die hohen Dynamikanforderungen sind leider konträr zu den Robusheit des Frontends verbesserbaren Maßnahmen und eine entsprechende Sorgfalt im Umgang solcher Messgeräte ist somit gefordert. Those of you who have been following this project evolve will have seen how I soldered the transistor to the heat-spreader and before that how I machined the heat-spreader & heat-sink after their initial use. The amp is controlled with a amplifier control board from W6PQL with a couple of mods. relay I have here and a kit from W6PQL. 4-events Relay Sequencer - W6PQL. Sequencer has four outputs, which able to sink up to 50 V, 3 amps (P1-P4) and another output up to 30 V, 7 amps (P5) for LNA and RF Relays. 00 USD Input Relay, DPDT Subtotal $953. EME 300W W6PQL PA. January 10, 2018 By N4GA - Rob 15 Comments. PC board kit PC board kit These DEM boards are for my 10 Ghz whitebox, I am using manual switches right now, I made a couple of contacts this June and that got me excited again to finally finish these. This sequencer is designed for CO-OP work with VHF radio equipment including transceiver, PA and LNA. On the OEVSV web were published preliminary international results of VHF Contest IARU 2017. Good link on using common relays for RF switching. Noise Figure Testing at the 2010 International EME Conference. TR antenna switching relay included on an aluminum plate, ready to run. March, 2015 Update: New LNA/TR relay enclosure installed and Tx Driver installed (see photo on right, below). G0MGX In the Shack Musings from the Radio Shack of G0MGX in Central England. It necessitates removing power to actual amplifier, so as not to form an oscillator!. However, my friend Steve Gillispie, K8LZ, just happened to offer me a very nice 24/28 VDC power supply that would do the job. The PC board is professionally fabricated and is Ideally the amplifier should survive no antenna, a shorted antenna, high SWR due to snow/ice and any other combination. I decided to test the ATU that I never use and seek some advice. Matej, Petrzilka, OK1TEH. com Amateur Radio Station W6PQL. 8kW LDMOS & power supply 55/48v Compiled with IDE 0. At this power level recent designs from W6PQL and F1JRD have made power vacuum tubes like the 3CX800AJ obsolete. Before you ask, no it is not the original relay from this or any other TV2! It is a relay I found in my junk box, and is used to energize the TV2 external power supply (I'm using a Heathkit PS-23) when I switch on the transceiver. Because the price of the W6PQL kit is cheap, is not there a lot of people using it? However, many SSPAs are digital modes such as JT65 and do not assume full duty operation. This Low Pass Filter (LPF) kit is based on the G-QRP technical pages design by Ed Whetherhold W3NQN. Skip to content. Earth Moon Earth communications- very draft Introduction Josh, a new call, VK4JNA, suggested doing EME. I am not using a Radio as the pre-amp so i need a linear pre-amp to vary the wattage input to your amp, i am amusing. net with help of n4pz and wb2byp. The second amp is a kit which can be purchase as-is or I can assemble it (30-day delivery). This is a +12V-on-transmit output that feeds to the Minikits EME66 coax changeover relay PCB, noting that it requires +12V in. Any idea's on how to make a minimum circuit (important) to switch a single coil latching relay with a voltage on the IF coax during TX (db6nt transverter style) The voltage on TX is 5V, relays are 12V single coil latching RF relay. Although not coaxial, the $3. I would like to use the TX1/TX2/TX3 outputs in lieu of a sequencer to control a vhf preamp. installations. Fan data Sunon, 50 mm x 50 mm x 10 mm, MB50101V2. This amplifier will produce 160w out with 10w in, all modes, (4w in 100w out). Since PA switching relay is present before PA input, the total number of coaxial relays used is halved. This changes allow to use the sequencer in the best way in VHF radio stations conditions. So I drew this using non SMD components:. 2 meter band, 144 MHz EME 3 Bandpass PGA preamplifier: 144 - 148 MHz EME 3 Filter Relay With Preamplifier. 2 V to around 13. 3 GHz et précautions à prendre F5DQK septembre 2019 Ensemble 2,3 GHz transverter + ampli + sequencer rel 4 1 Rel 3 : 4 oct 2010 Rel 4 : sept 2019. You didn't mention frequency, or just how big these relays are, but at HF, you should be fine. RF Relay (Hurdalikta bulunanlar genelde anten switch. The fan is sitting on the rear panel and blows cold air into the cabinet. Saturation seems to be appearing so max output is probably. May 22, 2019: Modification moving dual preamps, TR relays, and polarity relay completed, with new. Our range includes HF, VHF and UHF amplifiers. Keying up in FM mode during testing, it lasted about 5 cycles.
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