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I presume "much prone to leakage" should read "much less prone to leakage"? Bob Sent from my StarLink satcom terminal

Guys,I just did up a Cubic R3080 last winter changing out all the power bus caps that has the same disease.New tantalum caps are just as bad as the old ones so I decided to replace all the 10uF power

Peter, I will make one well intentioned criticism of your advice, which was to use a NiCad battery, leakage from which has destroyed a lot of A6A2 cards.? Use instead a NiMH replacement which are

Hi Peter, Thank you for the suggestions. I have a couple hours today to work on it. So far found two open traces on the A6A2 board, repaired them but still have issues. I tested all of the traces as

Hi Tom, I have just finished repairing an RA6790 and its a very nice receiver when its going! I am no kind of expert on these but I can answer some of your questions. The battery in mine (and I assume

I was lucky enough to be given an RA1779 the other day. When I turn it on all I get is a loud hum and error message, so I assume the power supply may be suspect. Does anyone know where I might be able

HI Richard, No problem Jeff

One of these radios found a home at my house yesterday. I am typically a collector / restorer of tube based radios, but have had a couple Harris RF-590's and a Watkins Johnson. I am familiar with

Jeff, I have replied direct via this group and via email. I've tried a few times so no idea what is happening. Perhaps I am being dumped as spam. Can I use the mobile number that ends in '030' to

HI RIchard. No i've not heard anything from you since i asked you to contact me direct. Jeff G8XXI

Are there members who can help me with hex eprom files for a racal ra1792? I am looking for versions that have the 1Hz readout and when possible with the ieee488 gpib interface .

Jeff, Did you receive the email with my contact details? I am still very interested in acquiring a set of these rails. Richard G7RVH

I run a 6790GM and it shares input through a Racal antenna tuner that front end bandwidth limits to a 1 MHz slice of HF bandwidth, determined by slave to a RA 6217E. This feeds a 8 port Nuvistor

Yes that is true. But surely the specs like dynamic range and blocking still give useful information on the front end of the receiver? 73 Kees

are there members who can help me with hex eprom files for a racal ra1792? I am looking for versions that have the 1Hz readout and also have the ieee488 gpib interface .

I am restoring a Racal RA117 that came into my hands having no black Bakerlite bezel. I`m hoping that someone on this group can help me get one to make this older radio complete.

Dave, Many thanks for your clear and informative response. I now understand what is going on with the Syncal 2000 / VIU / 540G combination that I have. Also, the information regarding the other C & F

Hi Richard The momentary break method does not store any data, each time it is initiated it resets the microprocessor and completes an active tune cycle with RF to match the antenna as best it can.

Have a look at sema4radios dot com

Dave, Thanks for your response. Just to be clear when using the momentary break method no data is stored. Tuning data is only stored when using the PWM method. Is this data still stored when the unit