[TenTec] Omni6+ roofing filter

[Scott Johns]

Pete,

I'll check the first IF and let you know...have to get to work now but
will try looking it up thisafternoon.

73, Scott

-----Original Message-----
From: tentec-bounces at contesting.com
[mailto:tentec-bounces at contesting.com] On Behalf Of Pete Smith
Sent: Monday, June 16, 2003 11:07 AM
To: tentec at contesting.com
Subject: Re: [TenTec] Omni6+ roofing filter

At 08:09 AM 6/16/03 -0700, you wrote:
>INRAD did some experiments with a narrower roofing filter in the OMNI
VI 
>and the improvements were not large.  The OMNI VI has such a solid
front 
>end that the roofing filter is apparently not a big deal.  You can call

>George up at INRAD and ask about it, he is usually happy to discuss his

>thoughts.
>

What frequency is the OMNI 6+'s first IF?  On many general coverage
radios, 
the first IF is up in the lower VHF region, apparently to reduce
spurious 
responses.  I talked with George at some length at Dayton this year, and

her indicated this is a big problem with fitting a narrower roofing
filter 
to some radios, such as the Yaesu Mark 5.  It's not easy to build a
narrow 
crystal filter at 70 MHz, I gather.


73, Pete N4ZR
The World HF Contest Station Database was updated 9 May 03.
Are you current? www.pvrc.org/wcsd/wcsdsearch.htm



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