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I have? a few? Racal Cougar Radio SMT amplifiers TA4523L, 70 Mhz band that are set for 10 Watt Tx output. A while ago I remember there was website with details and photos,? how to revert the PA

Hello Richard. Thanks for the idea and photos. An ingenious solution to obtaining 100watts HF output driven by 100mW from MA79.. I can get hold of a scrap RA17L and will look further into this. Kind

Hi Jeff and Terry, How about making one. You just need a scrap RA17 for some hardware. I moved from RSA to France in 2016 and This one I had got hold of with the intention of rebuilding. It has 2 x

HI Terry, No luck at all . stilll ooking for one. G8XXI

Hi G8XXI, How did you get on with the search? I'm needing one as well for a MA 79G.. Terry ZL1NOW

Hi everyone, After G0FCT has kindly scanned and sent me a manual for this radio, I now have it working quite well. The first Mixer had a cooked resistor and there were some issues with the

Hi all, I have a TA4793A (non-harness) PA/VIU for a Syncal 2000 (thank you, Jeff). Might anyone here have a Harness Option kit, part number 754332? I believe this consists of 1 PCB, one 7-pin

Yes the U21 on the A4 card, The A7 card cane be the cause of the filters not working correctly, go to CW and vary the frequency up and down and check that it is smooth in both directions. Gary

Thanks Gary, Is the 10v adjustment you reference the -10v for the DAC (U21)? If so it is -10V. Tom From: [email protected] <[email protected]> On Behalf Of gewingerd@... via groups.io

You can force the filters with the attached file, the A2 is +2 to -4 DB of gain, the A3 is +55 DB of Gain and the A4 is about +60 DB of gain, the 10.00 Volt adjustment on the A4 card is critical for

After changing out several IC's on A4, A6 and A9 and replacing the EPROM sockets, that were corroded by a bad battery, I now have my 6790 up and running. Signal levels seem low though and running the

Hi all, I have documentation on the Syncal 2000, but I am looking for any and all documentation on the TA4793 which is the 100W VIU/amplifier and DC-DC converter for the Syncal 2000. If you have such

Odds are: You have something wrong on the audio section, and audio is not getting to the modulator. Odds are: The nature of the equipment and the way in which it failed soon after keying up would

Hello everyone. It is time to look at my TRA931 again. Model MA930, s/n 3707. The last I used it a couple of years ago I was outside with the whip antenna and made a ssb contact on 20 meters. I then

Cheers? Happy New year for when it comes Stuart

Hi, Jeff, is it in nice cosmetic condition? Happy to purchase if you have a price in mind, or deal on a similar-looking US H-250 handset if that night interest you, new unissued, curly cord but no

Jeff Do you have a photo, and as is customary, can you state a price,Happy Christmas StuartG0TBI

I have for sale a Racal hand set type (unreadable) this has 2 rotary switches one for channel selection, and one for volume. only thing is, it needs re-wireing as for some strange reason the cable has

Hi All Just a quick thank you to everyone who has responded to my request directly and via the group. Really appreciate the help and advice. I'm sure I will be able to crack the fault now I'm playing

Anyone have a VIU - preferably with cables - for a Racal Yeoman VHF/ TRA-3900 they'd care to part ways with? LR Series used to have them but I missed the boat there. It would be going to Canada if