Message-ID: <4F69F913.4030102@gmail.com>
Date: Wed, 21 Mar 2012 15:51:47 +0000
From: Dexter McIntyre W4DEX <dexter.mc@gmail.com>
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Subject: Re: LF: Loran and calibration
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This?

http://www.lwca.org/library/articles/w1tag/R75cal.htm

Dex

Alberto di Bene wrote:
> I remember reading a few years ago on this group a message
> saying that if the Loran signals are demodulated with an AM detector,
> a few lines should result, whose precision is independent from the
> frequency (in)accuracy of the receiver, but is directly tied to
> the Loran specs, and could be used to calibrate the frequency display
> of the receiver.
>
> Could please somebody recap that for me ? I am unable to find that
> message again.   What I am observing, receiving the Loran signals at
> 100 kHz and using an AM demodulator, are a few steady lines, one of
> which being at 1004.70 Hz, quite stable, even in a 700 µHz bandwidth.
>
> What should be its theoretical value, based on what written above ?
>
> TNX
>
> 73  Alberto  I2PHD
>