[Spooks] Re: Spooks Digest, Vol 7, Issue 38

[monacof at bellsouth.net]

> 

I don't think loran sounded like a modem gearing up. To me, it sounded more like when you were a kid, going down a really steep hill with a playing card clothes-pinned into the spokes of your bicycle wheel. <G>

Frank / AE4ZV




> From: Ben Mesander <ben at jymis.com>
> Date: 2004/09/01 Wed AM 09:30:10 EDT
> To: Shortwave Spy Numbers Stations <spooks at mailman.qth.net>
> Subject: Re: [Spooks] Re: Spooks Digest, Vol 7, Issue 38
> 
> Visit http://mailman.qth.net/mailman/listinfo/spooks to unsubscribe from this list
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> 
> >The rolling sound thing sounds like Loran. It was used by ships as a 
> >navigational aid.
> >
> >30 years ago when I fist got on top band (160m) it was around 1950Khz, but 
> >the Australian transmitter was in 1850 I think. Used to spread 40Khz. It was a 
> >pain, and took up lage portion of the band.
> >It was phased out in the ealy 80's in favour of the Decca Navigation. That 
> >went recently too, in favour of GPS.
> 
> Loran-C is alive and kicking in many parts of the world on 100kHz. Loran is a loud clicky sound as it is a time domain multiplexed pulse modulation.
> 
> I wrote the timescale firmware for the new Loran-C stations the USCG is deploying.
> 
> Enjoy,
> Ben
> 
> 
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