[ARC5] Easy selectivity improvement....isn't...

[J. Forster]

Ken,

If you can adjust that generator to sweep around the IF frequency with a
width of 10kHz to 50kHz sweep width, you probably have what the original
designers did, and that should be all you need.

If you can FM modulate the 8640A (I don't have one) that should work also.

Frankly, a VNA or SA/TG are both overkill. Also, they are most useful in
50 Ohm systems.

YMMV,

-John

================



> I don't have that fancy equipment. I have a B&K sweep/function generator
> with a sawtooth or ramp output which will drive the horizontal input of my
> scope, and which covers the necessary frequency range, and I have a
> couple of good scopes. I also have a good HP-8640B. Those will have to do.