[Lf] DCF 39 ???

[Andre' Kesteloot]

OK Guys, what can we do about this ?  I did not even look for DCF while at Nags
Head (at least not that I remember ...)
Andre'

Mike Dennison wrote:

> >From Dave G3YMC
> >I looked at the information and pictures on the Amrad site of the recent
> >Nag's Head Dx-pedition today, which I found interesting.  I note however
> >there is no mention of either the DCF39 signal (138.8) or CFH, the latter at
> >least I would have expected to be audible there.  Mike G3XDV mentioned this
> >week that reception of DCF39 must be a good indicator of a possible DX path
> >to Europe.  However identification of this signal may be the problem as it
> >is a continuous carrier with periodic bursts of data, and as such would
> >appear as a solid line on a DSP display.
> >
>
> Yes, but until DCF39 is detected by ear, there is no chance of amateurs
> 70dB below it getting through, even using slow CW. I, too, was
> disappointed that DCF wasn't mentioned. It would be interesting to see a
> Spectrogram of the bands 135-137kHz and 137-139kHz using SSB bandwidths
> on both the Rx and the DSP. In that bandwidth, Spectrogram will easily
> show the modulation bursts.
> --
> Mike, G3XDV
> IO91VT
> http://www.dennison.demon.co.uk/activity.htm