Hi I have a Radiall relay R570343010 which is spec as being frequency for 0 - 3 GHz. I wonder if I could push it's operating frequency up to 3.4GHz? Has anyone tried or have an opinion on if it will b

Many thanks for the comments on the power supplies, folks. I should say that I do have suitable linear supplies, these have served me well, but are really too big for my current set-up, and will proba

Nothing to do with microwaves, except possibly that it will help me sort-out/rationalise my workroom/shack, and thus help hasten my return to having an operational station. Does anyone have any (polit

Good morning all. Thank you all for your helpful feed back. It is interesting that I can still hear the Beacon PI7CIS with my mast down. (and I am in Greater London) This seems to indicate that the Co

For the past week or so, Airscout has not been working well, and I see error messages like "the remote server returned an error; (500) internal server error". I've disabled the Planefinder.net feed, w

Hi, suplus to my needs: SM3437-43L 3.4 to 3.7 GHz solid state GaAs-FET Amplifier Pout +43dBm Gain 50dB OIP3 +63dBm RFin max -6dBm IN/OUT SMA(f) DC 12V @ 8.5A optional ARRA variable attenuator 0-30dB /

Does anyone have alignment instructions for the old SSB Electronic LT33S? It’s based on the LT23S and I believe alignment instructions for the 23 would give a clue as to what to do for the 33 as they

Managed to find a bit of time to drop the SAV541 into the 13cm preamp board and run it up. Looks good so far ... DC it is spot on, the auto-bias scheme resulted in 3V Vds and 60mA Id exactly as planne

Once again my thanks for all the advice given on this group and also by private E mail. Today I had the use of a calibrated Procom VSWR/ Frequency generator and tested the coax lead up to the antenna.

Hi all, Are there any comments re. my questions? On Thu, 11 Feb 2021 08:13:29 +1000, Alan Beard via groups.io wrote > Hi all, > Practical questions: > > > 1) Going for around 15db of gain on 23cm, hom

Look at this on eBay Aircraft Raytheon Window Part of Radar L Band System WMT650 PT6017 28-365-003S Interesting just 4 W input is that 4KW output or 40KW (30 or 40dB gain) No power supply ... Think I

So, not much going on over the weekend, work seems a little quiet, I thought you might like a bit of an update on what I've been up to with my SMD pick and place machine. I usually use it for stuff I

I have a long term problem with my 17 element MET Yagi. The VSWR is rather high at about 6-1 and I cannot risk blowing my new radio! I have no way of taking down my pump up mast to adjust the matching

I wonder if anyone knows if there is any software about that can control a device connected via an SPI bus. There are small compass modules available that are SPI controlled. Along with various PLL mo

Hi All, I am having a thinning out of some of my test gear, getting rid of duplicates, and I have a nice HP432A for disposal. It is complete with its sensor lead and a K486A thermister mount which cov

Currently, I have orders for 65 PCBs, 36 DF9NP local oscillators and lots of component kits and enclosures for the F6BVA 10 GHz to UHF transverters in the group purchase. If by any chance you have mad

The UK Microwave Group had an entertaining talk by Kent WA5VJB/G8EMY last night, broadcast courtesy of the BATC streamer. The video is now available for viewing on the UKuG YouTube channel here (thank

Dammit, I missed Kents talk ! G8LBS. Sent from Mail for Windows 10

Hi all, Practical questions: 1) Going for around 15db of gain on 23cm, home made, would you build a yagi or corner reflector for a home tower installation? 2) The waveguide fed yagi, does this simplif

Gm All 10GHz aficionados", It would also be auspicious to recall in the object that it is "the transverter 10GHz designed and produced by Michel F6BVA" for the good pleasures of “the Ham community! Gr