On Fri, 12 Aug 2005 11:58:20 -0500, Cecil Moore
wrote:

Ham op wrote:
Cecil Moore wrote:
Real hams do DSP filtering at IF.

Cecil, I thought you and I did our 'DSP Filtering' by adjusting the
regeneration control or the whisker.

Strangely enough, I never used anything except a superhet.

What's an IF ??

455 Khz on everything I used back then. With no RF amp,
my S38 would receive the same signal on two different
frequencies on 15m, sometimes eliminating an interferring
signal in the process.

Cecil, without the RF amp to erase the image, the S38 could boast
two-fer-one, or double yer pleasure--two places to get yer
information--you could take yer pick. The filter in that unit was a
Gilette double-edged type.

Walt