Transatlantic on 136 KHz

David Borden
Sun, 26 Apr 1998 20:19:21 -0700

  I will be listening.  No frequency seems very clear here.  I have
interference from my computer connected to the DSP engine.  I have
intereference from my wife's computer and my daughter's computer (we are a
very computation intensive home), but I am working on it.  I am practicing
on beacons.  I will try to hear you, but I think I will have to do much
better on my antenna before I really get in the running.  Anyway, keep
transmitting, we really care over here, but we have a long way to
go...david,k8mmo (Oakton, VA, USA).

> From: Peter Dodd <>
> To:
> Subject: Re: Transatlantic on 136 KHz
> Date: Sunday, April 26, 1998 03:50
> >From Peter Dodd, G3LDO
>  Hi TacoGang,
> You may have received the following e-mail regarding amateur test 
> transmissions in the 136kHz band.
> "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
>  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
> I have been transmitting on 137.4kHz in slow morse when the situation 
> allows but so far no reprorts or even an e-mail as to if anyone is 
> interested. I think it might be better if I can find someone who is 
> interested and arrange the transmissions to their conveniance. For 
> example is the frequency band usable at the USA end. If so what is 
> the best frequency between 135.7kHz to 137.8kHz? What is the best 
> time? A good propagation marker is probably the BBC long wave station 
> on 198kHz.
> Is anyone interested? It could eventually result in a cross-band QSO.
> -- 
> Regards, Peter, G3LDO
> <>