[Heathkit] Re: more SB 303

[kiyoinc at attglobal.net]

<bluebirdtele at earthlink.net> wrote:

> Replace the filter with a 100 - 200 ohm resistor and see if the radio will 
> run AM in that mode.
> If the filter is bad the radio should work ok with the resistor in place of 
> the filter.

My guess is that the filter is good. As Greg suggested, it's the switch.

If it turns out that the AM filter is bad, you might open it, resolder 
the internal connections.

Even if the filter is bad, that's not a major loss.  If you can get it 
working as a one or two crystal filer, that's an improvement as the 
Heathkit stock 3.75 kHz filter is too sharp.

I also saw an SB-303 with a couple IF transformers for AM.  I don't have 
any details on this modification but many like a wide, sloppy IF, 8, 10 
kHz wide.

de ah6gi/4