[R-390] 16kHz filter and SWL/BC listening

[Steve Byan]

On Aug 29, 2005, at 9:16 AM, Tim Shoppa wrote:

> I suppose the 2/4/8/16 kc bandwidth progression represents
> somebody at Collins liking powers-of-two.  (Note the 1-2-4-8-16
> Mc bandswitching...) For my usual purposes
> of CW listening it'd be nicer to have the mechanical filters at
> 1/2/4/8 but I'd need a time machine to fix that!

Dallas Lankford had a series of articles (I think in Hollow State News, 
but maybe they were in the NRC's DX News) on replacing the 16 KC filter 
with something more useful. I think he tried some 6 KHz ceramic filters 
and the new 6 KHz Collins torsional filter. Maybe you could do 
something similar with a Rockwell/Collins 500 Hz or 300 Hz mechanical 
filter. (They don't seem to offer the 1.2 KHz torsional filter as a 
stock item anymore.)

Regards,
-Steve
--------
Steve Byan <stevebyan at mac.com>
Littleton, MA