The CW offset is fixed, but is adjustabe with a trimmer capacitor inside.
Regarding filters, I find adjusting the PBT (and if necessary IRT) gives
more than adequate range of RX pitch. The CW roofing filter is relatively
wide, so does not impact on the optimum receive pitch, in my experience at
least.
73 Fraser G4BJM
>From: "Arthur Trampler" <atrampler@mchsi.com>
>Reply-To: Arthur Trampler <atrampler@mchsi.com>,Discussion of Ten-Tec
>Equipment <tentec@contesting.com>
>To: <tentec@contesting.com>
>Subject: [TenTec] Omni VI Plus/CW/Filter Question
>Date: Sat, 30 Jun 2007 19:41:15 -0500
>
>I am thinking about getting an Omni VI Plus from my brother. I would add
>the Inrad roofing filter and 9mhz narrow filters. From what I can tell,
>the VI Plus is set up for a 750 hz offset, as far as the stock filters go.
>Yikes, I like less than 500.
>
>If I understand this properly, although the VI Plus has variable
>offset/pitch, the 9mhz N1/N2 filter and any roofing filter have to be set
>for a lower offset if all is going to work. From what I can see, my choice
>on the roofing filter if I want this is the Inrad 765.
>
>With discontinuing the 28# numbers, is there a 250hz 9mhz filter, with the
>passband centered around 500hz? Or the 6.3mhz if filter?
>
>Finally, I have heard a rumor that running the lower offset requires a
>re-alignment of the rig. This makes no sense to me...but what do I know?
>
>Input is appreciated.
>
>Thanks,
>Art, KC2G
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