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Hi all I'm new to the Racal Cougar kit and I picked up a 144mhz unit at a rally yesterday. My question is what is the chemistry of the main battery on the SMT unit for charging purposes ? I have a

Which is a wideband IF convertor from 40.455 MHz to 21.4 MHz and appears to be useful for using a panadapter with any of the 40.455MHz first IF receivers such as the RA6790/GM and the RA1792.? It

Thank you Bill!? That's a great help, and I'll try that tomorrow.? I have an original Racal manual, but I find now I need it that some pages are missing.? I'll try to find the one you mention. 73 -

It looks like 20:1. 20t on TR12 collector side. The xfmr turns ratios are marked on the TR48 (same as TRA931) schematic from Radiomuseum.org. On my TRA931, I had one xfmr completely broken off the PC

I have a Syncal missing T4 in the Rx 1.4 MHz IF chain.? I have a suitable core and need a better guess than mine as to the turns ratio needed, if there's anyone technically more qualified than I,

Open under notepad to read

I have attached bin files for the standard GM firmware set, A08449. Dan - ac6ao

Receiver has been sold.? Thanks to everyone for looking.

Give me a couple of days to locate them, I thought I gave them to the group a bunch of years ago Gary

That would be GREAT! Craig -- This email has been checked for viruses by Avast antivirus software. www.avast.com

I have the HEX files on a 3.5" floppy disk that I think I can copy off and send them to the group. Gary

Check with Gary Wingerd.? I bought new EPROMs from him, but it was probably 10-11 years ago.

Curious, where does one get the hex files for the software? -- This email has been checked for viruses by Avast antivirus software. www.avast.com

That Dropbox link is supposed to work for anyone to view.? You should not have to have an account or sign in to view the contents.? I can email the photos to anyone who has a similar problem. Jim

Interesting, I had no issues viewing the photos.

It wants me to create an account. No thanks. Peter

Time to find this a new home.? 5 filters installed:? 0.4, 1.2, 3.4, 8, 16 kHz.? 9666 software installed (tunes below 500 kHz).? All tantalum capacitors have been painstakingly replaced with

sorry for all the consecutive posts. It only dawn on me right now. The phosphor in the glass ampules is still good, its only the Tritium gas that has gone through several half lifes of decay If one

I've used 1mm OD pins from a D-Sub 9? or 25 male connector to mate with the microphone connectors in the Syncal. Attached are three pics. Two of the diy connector for the external speaker/amp +