[TenTec] Orion trim pot adjustment

[Rsoifer at aol.com]

I tried the WWV test on my 7 year old Orion II.  After an hour's warm  up 
it was 65 Hz off at 10 MHz.  I know that's out of spec but I  probably  won't 
try to fix it unless it gets worse, say 100 Hz or  more.  I'm so much of a 
klutz, and the adjustment is so sensitive, that I  could very well make it 
worse.
 
73 Ray W2RS
 
 
In a message dated 5/26/2013 5:55:43 P.M. GMT Standard Time, ronc at sonic.net 
 writes:

The  master oscillator is actually on the A-10 board on the underside of  
the
radio.  Even from the factory, most Orion's were calibrated about  20 Hz off
frequency since they were probably adjusted with the cover off  the radio,
hence with the master oscillator in a cooler environment.   Check these two
articles on my  website:

http://www.n6ie.com/TXCO%20Calibration.htm   and

http://www.n6ie.com/Fan%20Mod.htm

which addresses the drift  problem that results from temperature variations
around the A-10  board.  

Ron Castro
N6IE
www.N6IE.com

Member:
ARRL
Redwood Empire  DX Assn.
Northern California Contest Club
Northern California DX  Foundation



-----Original Message-----
From: TenTec  [mailto:tentec-bounces at contesting.com] On Behalf Of Carl
Moreschi
Sent:  Sunday, May 26, 2013 8:26 AM
To: Discussion of Ten-Tec  Equipment
Subject: Re: [TenTec] Orion trim pot adjustment

Make sure  the radio is warm and at normal operating temperature when you do
this  because this will vary a little with temperature.  I was able to get  
my
Orion within a few hertz of actual frequency by doing this.

Carl  Moreschi N4PY
121 Little Bell Dr.
Hays, NC  28635
www.n4py.com

On 5/26/2013 11:10 AM, Barry N1EU wrote:
>  Can anybody tell me what Orion adjustment is controlled by the trim 
>  pot that is accessible through the hole in the top directly behind the  
> front panel (in line with "audio" button"), with the top cover  removed?
>
> Thanks&  73,
> Barry N1EU
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