[Boatanchors] SR-2000 and AM mode

[Mark Shaum]

Dave asks:

>The Hallicrafters SR2000 does not have an AM (or DSB)
>position, at least mine does not.

>Interesting possibility. Doea anyone know of a non
>destructive reversible mod to use the Hurricane on AM?

>Dave, W5WP

Well.. unbalance the balanced modulator a bit to get some resting carrier 
out, maybe 50-100 watts.  Advance the mic gain while watching the output 
with a scope and you should be able to generate some reasonably intelligible 
AM, although it will just be a carrier with one sideband.  Clip a capacitor 
across the IF filter and you will have both sidebands with the carrier, but 
watch for spurious sigs.

On receive, you will probably be stuck with zero beating the carrier and 
limited bandpass.  I don't know if the SR-2000 has an AM receive mode with a 
diode detector or similar.

I really don't suggest the above with the Hurricane.  I've used my NCL-2000 
as an AM linear at about 300 watts carrier output and those 8122's put out a 
LOT of heat in that service.  It's rough on the tubes and they aren't cheap 
nowadays.

Mark K9TR