[time-nuts] Trimble Thunderbolt off freq?
J. L. Trantham
jltran at att.net
Sun Sep 12 11:50:28 UTC 2010
What program are you using to monitor it with and what does it say?
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Bob DeVarney W1ICW
Sent: Sunday, September 12, 2010 2:02 AM
To: w1icw at myfairpoint.net; Discussion of precise time and frequency
Subject: [time-nuts] Trimble Thunderbolt off freq?
On 9/12/2010 3:00 AM, Bob DeVarney W1ICW wrote:
> Anyone have problems with a Trimble Thunderbolt being off frequency?
> GPS has been locked for months, so it's not a GPS lock problem. I
> compared it to another standard borrowed from work, and it appears to
> be 22.0 HZ high.
> When I use this same standard as a reference for my HP 3586C Selective
> Level Meter, it reads WWV on 15 MHZ as being 22 HZ high as well, so I
> tend to believe the borrowed reference is accurate; not the Trimble.
> Is there a way in the Thunderbolt software to adjust the OCXO on freq?
> I did not see any hole on the side or top for a trim pot on the OCXO.
> Bob W1ICW
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