Topband: High pass Filters
George & Marijke Guerin
gmguerin at voyager.net
Sun Nov 28 08:32:00 EST 2004
Hi All,
My best Hi-pass filter came from an article in the ARRL Handbook - 1985 page
30-32,
The series resonance can be adjusted to help null nearby stations in various
parts of the BC band.
73 George K8GG
----- Original Message -----
From: "Barry N1EU" <n1eu at hotmail.com>
To: <topband at contesting.com>
Sent: Saturday, November 27, 2004 7:27 PM
Subject: Re: Topband: High pass Filters
>
>>From: "Michael Tope" <W4EF at dellroy.com>
>
>>
>> > ICE (in Indianapolis) makes decent high pass filters with a cutoff just
>>below 1.8
>> > MHz.
>
>>
>>One caveat is that this filter has limited rejection (only 10
>>to 15dB) at the high end of the BC band:
>>
>
> That was indeed my experience and the Dunestar filter did a better job at
> the BCB high end.
>
> 73,
> Barry N1EU
>
>
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