[TenTec] Omni VI Frequency Adjustment

[Bry Carling]

Ah good tips... I will check against WWV very carefully as soon as my OMNI VI gets here, 
which now looks like it could run into the week of  January 7th, due to the delays with the 
New Year holiday.

Brian AF4K

On 28 Dec 2012 at 13:02, Rick W wrote:

Date sent:      	Fri, 28 Dec 2012 13:02:16 -0800 (PST)
From:           	Rick W <ve7tk at yahoo.ca>
To:             	"ken.d.brown at hawaiiantel.net" <ken.d.brown at hawaiiantel.net>,
	Discussion of Ten-Tec Equipment <tentec at contesting.com>
Subject:        	Re: [TenTec] Omni VI Frequency Adjustment
Send reply to:  	Rick W <ve7tk at yahoo.ca>,
	Discussion of Ten-Tec Equipment <tentec at contesting.com>
	<mailto:tentec-request at contesting.com?subject=unsubscribe>
	<mailto:tentec-request at contesting.com?subject=subscribe>

> 
> 
> Thanks Ken.  It was getting late and the flaky C31 really had me.  I
> finally trusted the schematic and my instincts and replaced C31 then
> did the alignment.
> 
> All is now working as it should and pretty close to WWV.  
> 
> Unfortunately, I didn't find the Wiki document until it was pointed
> out to me today.  That would have made my life much easier - hi!
> 
> 
> 73,
> Rick
> VE7TK
> 
> Website: http://www.ve7tk.com
> 
> 
> 
> >________________________________
> > From: Ken Brown <ken.d.brown at hawaiiantel.net>
> >To: Rick W <ve7tk at yahoo.ca>; Discussion of Ten-Tec Equipment
> <tentec at contesting.com> 
> >Sent: Friday, December 28, 2012 12:23:52 PM
> >Subject: Re: [TenTec] Omni VI Frequency Adjustment
> > 
> >The Omni VI has a 20 MHz reference oscillator (which is divided
> down to 10 MHz) to which the VFO and the band switching crystal
> oscillators are locked. The BFO crystal oscillator is not locked to
> anything. You can have the 20 MHz reference dead on frequency and
> still be off frequency if the BFO is not adjusted correctly.
> >
> >DE N6KB
> >> Well after further examination this is NOT where I need to be -
> hi. It looks like that is the locking crystal for all the "logic" -
> duh!
> >> 
> >>  
> >>>  The rig is slightly off frequency  (about 150 Hz) - even after
> a significant warm-up.
> >>> 
> >>> 
> >>> Looking at the schematic, I have found the crystal oven on the
> Logic Board (81606).  It looks like the crystal frequency can be
> tweaked with C31.  This is an early O-6 and it has the crystal
> oven.
> >>> 
> >>> 
> >>> Other than C31, are there any other adjustments I should be
> considering? 
> >>>    
> >> 
> >
> >
> >
> >
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> 
> 
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2013.0.2805 / Virus Database: 2637/5993 - Release Date:
> 12/28/12
> 
>