Transatlantic on 136 KHz?

Andre Kesteloot
Thu, 16 Apr 1998 07:30:24 -0400

Hi TacoGang,

Peter Dodd G3LDO will transmit on 137.50 from 2300 UTC through 0600 UTC.
How about putting our Motorola 56002 DSP boards to good use?
Details below.
(Incidentally, I have noticed a few times now that the 180 KHz band is quietest
here between 0800 and 1200 EST. I presume this may also apply to the 136 KHZ

Peter Dodd wrote:

> Hello Andre
> > There are probably more members of AMRAD in the Washington DC region equipped
> > with Motorola 56002 DSP boards and LF receiving capabilities than anywhere
> > else on the U.S. East Coast, yet we had never heard of your sked   :-)
> > Next time you  run such experiments, how about letting us know in advance?
> > You can either e-mail me <> or directly to the AMRAD
> > core group <> and announce your sked.
> I obviously did not e-mail the right guys.
> This is what I said.
> "Our experiments on 136kHz in Europe show that distances of
> over 1000miles can be achieved fairly regularly (on aural CW). I have
> worked OH1TN several times cross band on 137kHz/80m several times and
> 2-way on 137kHz once. The distance is 1860km. The openings are
> usually, but not always, fairly short.
> It would seem that a trans Atlantic path is possible on 136kHz.
> To test this out I will be sending test transmissions on 137.5kHz
> from 2300UTC until 0600UTC every evening that the weather permits
> from tonight onwards. These transmissions will be very slow morse
> with a dot period of about 3 seconds and will just be my call G3LDO
> repeated. This transmission would be visible on a computer waterfall display.
> Our experience indicates that 137kHz band conditions are good when
> 160m conditions are good..
> If you are interested perhaps you could let me know if the frequency
> I have chosen is reasonably clear. The band is from 135.7kHz to 137.8kHz."
> However, I have to go away for a few days tomorrow so I will try to
> transmit tonight and then from next Sunday - times and frequency and
> morse dot period as indicated above. If you have any preferences let me know.
> --
> Regards, Peter, G3LDO
> <>