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Re: [TenTec] OMNI-6+ cw offset adjustment

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] OMNI-6+ cw offset adjustment
From: "Bob Henderson" <bob@5b4agn.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 1 Jul 2007 15:18:44 -0000
List-post: <mailto:tentec@contesting.com>
It's a long time since I used my VI+ so my recollection may not be perfect 
but fwiw.....

CW offset is indeed adjustable from the front panel and I believe sidetone 
pitch tracks CW offset.  What is not adjustable is filter centering, which 
is fixed at 800Hz.  If you're happy listening to a tone between 600-1000Hz 
this works fine with cascaded filters as narrow as 500Hz.  However, if your 
preferred receive tone is 450Hz this doesn't work nearly so well.  The 
problem is significantly exagerated if 250Hz filters are used.  Years ago, a 
bunch of folks had filters made with lower centre frequency, so as to deal 
with this problem.  I'm not sure but I suspect Inrad made the filters and I 
believe they were centred somewhere around 600Hz.

Bob, 5B4AGN


----- Original Message ----- 
From: "Roy" <royanjoy@ncn.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, July 01, 2007 2:56 PM
Subject: Re: [TenTec] OMNI-6+ cw offset adjustment


> Was stated,
>
> "The CW offset is fixed, but is adjustable with a trimmer capacitor 
> inside.
> Regarding filters, I find...(etc.)"
>
> No, the cw offset is programmable.
>
> 73,   Roy   K6XK
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> 

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