[Top] [All Lists]

Re: [TenTec] Omni VI Plus freq Adj

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Omni VI Plus freq Adj
From: Bob McGraw K4TAX <rmcgraw@blomand.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 7 May 2018 14:58:55 -0500
List-post: <mailto:tentec@contesting.com>
I've found it is necessary to set the BFO oscillators first. A key is to adjust 
to the frequency and in the exact sequence as published. You may need to do 
this 3 or 4 times as I've found some interaction between adjustments.  Be sure 
to adjust all modes, even ones you may not use.  

Once done place the radio in CW transmit and adjust the Master Oscillator such 
that the display indicates the measured transmit frequency.  20 meters 

Check all bands in CW mode and note the errors. You will have to accept one 
setting of the 
Master Oscillator minimize the errors. Don't expect to get it absolutely 
correct on every band. Usually +/- 50 Hz is about normal. 

Bob, K4TAX

Sent from my iPhone

> On May 7, 2018, at 12:56 PM, Gary Hendricks <k4mt1950@charter.net> wrote:
> I see this beat to death here but I have a question about peculiarities on 
> this radio.
> I have seen to adj the BFO first and MO last.  I have a very accurate HP 
> counter referenced to 10 MHz stnd. Als a HP sig genrator.
> I find if I set BFO freqs to within 1 HZ that unless MO is adjusted off of 
> exact 20 MHz the radio is off freq on all bands. To get it on freq after 
> aligning BFO I must tweak the MO away from 20 MHz to end up on freq.   I have 
> always found MO freq wg=hen set dead on with other radios and BFO set correct 
> the radio was on freq.  Guess I am asking too much from this radio design.
> I remember seeing this on a corsair also years ago.  I also seem to see a 
> difference between TX and RX freq.  Also the freq error changes from band to 
> band I suppose caused by errors in the crystals for each band.
> I tried setting MO for exact TX freq but then BFO had to be altered to get RX 
> freq right. Seems like chasing a moving target.
> Gary K4MT
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec

TenTec mailing list

<Prev in Thread] Current Thread [Next in Thread>