On Tue, 21 Sep 2004 09:22:41 GMT, John Steffes
wrote:

Howard,

The preselectors we have dealt with have been , in general, active. They
have used positive feedback to increase the "Q" of the resonant tank
circuit providing greater selectivity. It is reasonable to accomplish
this using no positive feedback (bandpass design) as you suggested.

John


John,
Thanks for the reply, nice to know I wasn't off-base in my thinking.

Howard