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@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@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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> TenTec@contesting.com
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>
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