02-02-2013, 07:53 PM
The IF on these for VHF is not 10.7 Mhz on these. It is in fact 19.5 Mhz. Maybe the IF has been tweaked - it does happen!
This was the first VHF radio and rather then the dubiously reliable ECC85, there are 2 of EF80's and they need to be top notch - well the first one in particular. Swap them over (does work sometimes) and then try a big antenna on it.
As with all such jobs, clean the wavechange switch as they are the root of all evil.
For the AM, I would look round the oscillator stage. What are the volltages on LW and MW? Try a spare ECH81 and check the MW components after checking the IF - 470 kHz.
Cheers,
Steve P.
This was the first VHF radio and rather then the dubiously reliable ECC85, there are 2 of EF80's and they need to be top notch - well the first one in particular. Swap them over (does work sometimes) and then try a big antenna on it.
As with all such jobs, clean the wavechange switch as they are the root of all evil.
For the AM, I would look round the oscillator stage. What are the volltages on LW and MW? Try a spare ECH81 and check the MW components after checking the IF - 470 kHz.
Cheers,
Steve P.
If we've always had that, why is the car boot open? You aren't smuggling in another old TV are you...?
