[time-nuts] Loran C returning to a station near you...

Alan Melia alan.melia at btinternet.com
Wed Jul 15 18:39:00 EDT 2015


It just depends what you mean by that :-) I could lock to Lessay and Anthorn 
at frequencies in the 136kHz amateur band, using some S/N DSP software 
writen by Peter Matinez G3PLX.

Alan
G3NYK
----- Original Message ----- 
From: "Poul-Henning Kamp" <phk at phk.freebsd.dk>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>; "Bob Camp" <kb8tq at n1k.org>
Sent: Wednesday, July 15, 2015 7:41 AM
Subject: Re: [time-nuts] Loran C returning to a station near you...


> --------
> In message <3E8A4741-F565-4D2F-834F-62ECA1CA1920 at n1k.org>, Bob Camp 
> writes:
>
>>If you look at the spectral width of the existing Loran-C (or
>>similar) waveform, it’s a massive thing. You would have a hard time
>>coming up with something that spreads more crud around the VLF range.
>
> The reason Loran-C "spreads crud" is *only* the combinationa of the
> pulse-groups and the periodicity of the GRI.
>
> The pulses themselves are entirely contained inside the allocated
> frequency band.
>
>
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by 
> incompetence.
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