[R-390] R-390a Image problem?

[Bob Camp]

Hi

Which antenna input are you running into? The situation you describe  
would be pretty typical if you run a long antenna into the  
"unbalanced" input.

Bob


On Oct 19, 2007, at 8:31 PM, Tony Casorso wrote:

> Hi everyone. This is my first post to the list although I've been  
> following it for a long time now. A few months back I bought a 67  
> EAC R-390a. The only problem I had was an open Z-503 AGC coil. I  
> replaced that and did an alignment and the radio seemed to be  
> working real well. Sensitivity was very good on all bands. Recently  
> I've noticed broadcast stations coming through in the 3Mhz band. A  
> local station on 1650KHz is about 40db at 3300KHz on the R-390a. I  
> don't hear it on my R-392. Even moving the 2-4MHz RF slug rack by  
> hand, I still hear the station (although it does get a bit  
> quieter). There are several other stations coming through as well  
> on other frequencies. I didn't notice anything odd when I aligned  
> it, everything seemed to peak like it should. Looking around at  
> other frequencies with my signal generator, I started noticing all  
> kinds of harmonic responses, but that is probably (at least to some  
> degree) just my signal generator (a Boonton 102C). I'm pretty sure  
> something is wrong here but I'm scratching my head trying to think  
> of a good explanation. If the BC station harmonic was that bad, I'd  
> hear it in my other radios I would think.
>
> Ideas anyone? How do I track this one down?
>
> Thanks,
>
> Tony
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