Date: Fri, 21 Apr 2023 16:16:58 +0000 (UTC) From: Phil Lefever <[email protected]> To: Topband <[email protected]> Subject: Re: Topband: AM broadcast multiplexing
<Eric, <I live about 3/4 mile from the multiplexed stations KKMS/WWTC (980 & 1280) <here in MN and they are all over the ham bands in my receivers. <Phil, KB0NES ## what might just work better than a HP filter......is a tunable / fixed notch filter, like a high Q type...with a high L to C ratio. On paper, that should take out the offending station a lot better vs a HP filter. 2 or more notch filters could be used. The notch filter could also be used in conjunction with the HP filter. The issue with the HP filter is..... it will provide more attenuation at the low end of the broadcast band vs the top end of the broadcast band. IE: ur on say 1805 khz, and the AM station is on 1610 khz..... vs an AM station on 610 khz. Jim VE7RF _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
