[TenTec] Omni VI Filter bandpass frequency

[Keith Hamilton]

Well I hardly believe it and I certainly do not understand it.  As 
suggested, I moved my PBT control to about the 11 o'clock position. The 6.3 
mhz cw filters (500 and 250) now track. In the 11:30 position, I can move 
back and forth from 500 to 250 hz filters with no change in signal strength. 
Perhaps someone smarter than I can explain it but for now I am happy 
switching from 500 to 250 hz at will.
Thank you to ALL who took the time to correspond with me. 73

Keith W8GX



-----Original Message----- 
From: Carl Winkles
Sent: Tuesday, July 05, 2011 7:02 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Omni VI Filter bandpass frequency

With an Omni VI Plus and the 285 or 282 in line I always have to adjust the 
PBT control to about the 11:00 o'clock position. This is barely mentioned in 
the manual. Maybe one of the technical guys on this list can explain it. 
Anyway, try it before replacing an expensive filter.

Carl, K4SEV

--- On Tue, 7/5/11, Keith Hamilton <tuner at zoominternet.net> wrote:


From: Keith Hamilton <tuner at zoominternet.net>
Subject: [TenTec] Omni VI Filter bandpass frequency
To: tentec at contesting.com
Date: Tuesday, July 5, 2011, 5:19 PM


I am a new owner of an OMNI VI Option 3. In the 6.3mHz Passband IF I have 
installed a #288 1.8hz filter a #285 500hz filter and a #282 250hz filter. 
When I tune to a CW signal I tune to the tonal frequency heard when you 
press the CW key in. When I have the radio zeroed in on the CW signal I hear 
the signal fine with the 2.4, 1.8 and 500hz filters but when I switch to the 
250 hz filter the signal goes way down in strength and volume. In order to 
bring the signal back up to the level present in the 500 hz filter I must 
tune the receiver higher say from 7.040.00 to 7.40.20. The filters center 
seems to be too high. Can this be adjusted inside the radio or has the 
filter drifted and needs to be replaced?
Thanks for the newbe question. If I have not been clear about the problem 
please let me know.  73
Keith W8GX
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