Time to pass this radio along, I've taken it as far as I can.?When I got it it was non-functional. I replaced the following:
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EPROM sockets
RAM
Battery (new Varta)
Multiple IC's (all replaced IC's are now socketed - including the RAM)
Display lamps
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The radio is now functional and receives pretty well. It could probably use a complete alignment which I am not set up to do as I don't have a tracking generator per the instructions.
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Full disclosure - it does not pass BIT. It fails on all of the filter tests. I'm unsure if the circuit generating the signal, monitoring the signal or the filters themselves are bad. When I manually enter the filter settings everything works so I'm leaning more towards the circuitry vs the filters being the cause of not passing BIT.
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It has seven installed filters, LSB, USB, 400 hz, 1.2 khz, 3.24 khz, 6.8 khz and 16 khz
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Also there is one segment, lower left of the most Signiant digit, that is out and the silvering behind the LCD's is a bit discolored.
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The R-2174 tag says it is serial number 3188. The RA-6790/GM tag on the rear of the unit says it is serial number 3265.
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I have complete print outs of both manuals as well.
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$500 plus shipping or will meet within reasonable distance of zip 18974.
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