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[aprssig] Cavity for 144.390

steve scott kd8s kd8s at intermind.net
Sun Nov 21 02:01:06 UTC 2004


yes....the dci filter is a good idea, i put on on my  vhf  receiver...its at
a tv broadcast site  with   two one megawatt  erp digital tv  xmtrs and  a
3.3  megawatt erp  ntsc box.  for the money, it works great.

i purchased  the  uhf version a few weeks ago for  a receiver at the same
site.  it has less insertion loss than a  cavity.  if you want to spend
$500  EMR  in phoenix  makes  custom  narrow bandpass cans.
without the dci  the noise floor in vhf is terrible.


find my current location at  http://map.findu.com/kd8s
running norton anti-virus on my computer
----- Original Message ----- 
From: "Jack Cavanagh" <cjcav at earthlink.net>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Friday, November 19, 2004 5:37 AM
Subject: Re: [aprssig] Cavity for 144.390


>    You might want to consder the DCI line of filters  www.dci.ca
> Their 2m/70cm duplexer is reviewed in QST for December 2004.Out of band
> rejection in the ARRL lab was 60 dB and that may have been equipment
> limitations.
>    They make two 2m filters. one is for the NA market 144-148MHz.  The
> other is for the EU market where the band is only 144-146 MHz.
>
> Jack/KB4XF
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