On Tue, 9 Mar 2004 14:01:40 -0600, "Steve Nosko"
wrote:

Be careful with this. I haev an ICOM 706 which I have been listening to
350kHz beacons and I suspect sensitivity is not an issue. The receive is
not selective enough to keep out much noise.

Steve -

You suspect correctly. That is why the antenna preamp for the HP 117A
VLF Comparator incorporated a magnetorestrictive 60 kHz filter with a
half-power bandwidth of 30 Hz.

Dale H. Cook, Chief Engineer, WWWR Roanoke VA, WCQV Moneta VA, WKBA
WZZI Vinton VA, WKPA WLNI WZZU Lynchburg VA, WMNA/WMNA-FM Gretna VA
http://members.cox.net/dalehcook/starcity.shtml