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Re: Topband: High pass Filters

To: "Barry N1EU" <n1eu@hotmail.com>, <topband@contesting.com>,"John Bohnovic" <bohnovic@bellsouth.net>
Subject: Re: Topband: High pass Filters
From: "George & Marijke Guerin" <gmguerin@voyager.net>
Date: Sun, 28 Nov 2004 22:05:54 -0500
List-post: <mailto:topband@contesting.com>
Yes, Page 30-22 is correct.

Sorry for the typo

K8GG

----- Original Message ----- From: "John Bohnovic" <bohnovic@bellsouth.net>
To: "George & Marijke Guerin" <gmguerin@voyager.net>; "Barry N1EU" <n1eu@hotmail.com>; <topband@contesting.com>
Sent: Sunday, November 28, 2004 8:51 PM
Subject: Re: Topband: High pass Filters



Make that page 30-22 as there is no filter on 30-32.

73..de John/K4WJ


At 08:32 AM 11/28/04, George & Marijke Guerin wrote:
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@hotmail.com> To: <topband@contesting.com> Sent: Saturday, November 27, 2004 7:27 PM Subject: Re: Topband: High pass Filters



From: "Michael Tope" <W4EF@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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73 de [] John

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John/K4WJ in Pembroke Pines, FL
<mailto:k4wj@bellsouth.net>k4wj@bellsouth.net

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K8PXG from 18 Jun 59 to 11 Feb 97
K8WJ  from 12 Feb 97 to 07 Apr 97
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