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Re: [TenTec] Omni VI 1st IF Narrow CW Filter Enable?

To: tentec@contesting.com
Subject: Re: [TenTec] Omni VI 1st IF Narrow CW Filter Enable?
From: John Oglesby <john91@charter.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 24 Jan 2011 21:27:56 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Neal - That is the set-up I am running, three INRAD filters in a row. 
An INRAD CW roofing filter and INRAD 250Hz filters in both IFs.  It 
works really well in contesting.  For casual operating I run the INRAD 
roofing filter with 500Hz TT filters in both IFs.  So, obviously I have 
the roofing filter set to turn on on both N-1 and N-2.  If I need to use 
the noise blanker (like on 160) I can't run the roofing filter as the 
narrow bandwidth screws up the blanking operation.  So then I just run 
the primary 500 or 250 filters.  This set-up works great for me.

The gain balance is good with the roofing filter and cascaded INRAD 
250Hz filters.  Before this set-up I had some issues with the TT 250Hz 
filters installed.  The passbands didn't work well together and I had to 
add some additional gain.


On 1/24/2011 11:17 AM, NL7VL wrote:
> Don,
> Do you have the instruction sheet? It can be wired to work off of
> either N1, N2, or full-time. If it was not using one of the narrow
> switches you would certainly notice it on SSB. I'm still trying to
> figure out if installing the 9MHz CW filter into the N1 position would
> cause the roofing filter to drop out, but I would doubt it.
> That would be quite the CW setup to have the CW roofing filter, and
> INRAD CW filters both IFs! I believe you can install the CW filter in
> either position, so if the roofing filter is controlled by N1, N2 would
> bring the 9MHz CW filter into the circuit, too. I don't think you can
> easily use N1 to control both. I'm sure it *could* be done, but getting
> things working normally would be the first task.
> I'm not sure about the gain setting but you probably would want the
> high gain with 20 poles of filtering :)

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