[TenTec] Omni VI Plus freq Adj

[Bob McGraw K4TAX]

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 preferred.  

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 at 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
> 
> 
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