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Re: [IRCA] frequency measurement accuracy
- Subject: Re: [IRCA] frequency measurement accuracy
- From: "Chuck Hutton" <charlesh3@xxxxxxx>
- Date: Sat, 2 Sep 2006 11:20:31 -0700
- Thread-index: AcbOuFHmKqFZGrsfT9eN92lrPWjhNAABBbYA
And - assuming you are using Spectran - the soundcard oscillator may be the
culprit.
Chuck
-----Original Message-----
From: irca-bounces@xxxxxxxxxxxxxxxx [mailto:irca-bounces@xxxxxxxxxxxxxxxx]
On Behalf Of Russ Edmunds
Sent: Saturday, September 02, 2006 10:45 AM
To: Mailing list for the International Radio Club of America
Subject: Re: [IRCA] frequency measurement accuracy
--- Bill Harms <wharms@xxxxxxxxxxxxxx> wrote:
> Well, I am measuring the frequency of WWV. Something is drifting at
> a rate just less than 0.1 hertz per minute. That amounts to about 5
> to 6 hertz per hour. Something is drastically wrong here. I have
> had my radio on for almost all day since late last night.
>
It only amounts to that if the drift is all in one direction. While
something in the receiver is possible, line power variations can't be
ignored.
Russ
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