Jan, all,
have a look at http://www.hf.ro/
73, Rik ON7YD - OR7T
________________________________________
Van: [email protected] [[email protected]]
namens pa3abk [[email protected]]
Verzonden: zondag 15 april 2012 11:49
Aan: [email protected]
Onderwerp: Re: LF: Titanic Frequency
Nice question.
My friend Google couldn't produce an instant answer.
What I know is that they used to have two frequency bands in use: 300m &
600m.
Knowing that the MGY was a modern vessel assume he had both and he
certainly should have produced his CQD on all frequencies available.
http://marconigraph.com/titanic/wireless/mgy_wireless.html
As Andy pointed out, sparktransmitters do have wideband, when a couple
of stations were in the air the spectra was well occupied.
There was also a certain "isolation" between Marconi and non-Marconi
stations, which they didn't improve the initial contacts and QSP.
The 600m came official alive after the disaster.
BTW The company I work for, still has of a wirelesstation in the
showroom from those days (1916).
A Telefunken spark transmitter working on both 300m & 600m.
It's quite an eye catcher between all the modern stuff and a good
marketing tool :-)
Jan/pa3abk
On 15-4-2012 10:52, Andy Talbot wrote:
> It was using spark wasn't it ?
> So an early spread spectrum transmission
>
> Centre frequency based on antenna resonance ?
>
> 'jnt
>
>
> On 15 April 2012 08:41,<[email protected]> wrote:
>> Does anybody know, on which frequency the titanic sent the SOS? Was it really
>> 500kc/s?
>> 73 de Toni, HB9ASB
>>
>>
>
--
pa3abk<-> dordrecht jo21it
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