Carl, after opening the Orion II from the bottom (removing the bottom
cover), the master oscillator (TCXO, Temperature Compensated Crystal
Oscillator ) is located on the A10 board and is marked with the brand name
Siward. Use the smallest jewelers type screwdriver and adjust this just a
little, as it is very sensitive. You do not need to use an insulated screw
driver when adjusting this.
I have done this to my Orion II, as it was 50 Hz low when I bought it. I
have the complete procedure if anyone needs it.
Carl, it was nice seeing yuo again last week at the Dayton Hamvention.
John, K3UR
http://www.qrz.com/db/k3ur
John D. Occhipinti, K3UR
Net Control, TEN-TEC SSB Nets
http://groups.yahoo.com/group/ten_tec_radio_net/
The Voice of Atlanta
----- Original Message -----
From: "Carl Moreschi" <n4py3@earthlink.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, May 26, 2013 11:19 AM
Subject: Re: [TenTec] Orion trim pot adjustment
It might be the master osc. Put the main radio at exactly 10 mhz and zero
beat WWV by adjusting this guy. I'm not 100% sure this is the adjustment
you are talking about but I do know there was one that would do this.
The best way to know for sure this is correct is to tune in WWV in LSB and
swap between LSB and USB with the display reading 10.000000 until there is
no change in sound between the two modes.
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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