Message-ID: <4E6B39A9.3020204@iup.uni-heidelberg.de>
Date: Sat, 10 Sep 2011 12:19:21 +0200
From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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References: <4E6B301F.3000802@iup.uni-heidelberg.de> <464F4937AE664E8AA5869E5FB3207048@JimPC>
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Subject: Re: LF: Re: M0BMU / DD7PC / DK7FC
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Hello Jim,

Ok, thanks for the info. Yes, have seen that 137.7 is on a DCF sideband, 
unfortunately...
And my backgound noise here in the city is quite disappointing. Have to 
work on the /p station, i.e. the UHF handheld TRX. The automatic 
variometer is another important step. And i shall add some kind of 
second PTT from the RS232, to enable the UHF link keying from remote. 
Then i can set the QRG (from 136.172) to 136.5 and the variometer 
automatically turns to resonance. Then enabling the UHF link and so i do 
not need to drive to the institute to enable the system for /p use. All 
could be done from home then and i can start with the bike to a quiet 
location.
This will be done soon, so that there can be plenty of CW contacts for 
me in the quiet season which starts now...

Thanks for calling/trying!

Cu soon.

73, Stefan/DK7FC


Am 10.09.2011 12:03, schrieb James Moritz:
> Dear Stefan, Marco, LF Group,
>
> Yes... I started calling CQ on 137650Hz and then saw DD7PC ("M" copy) 
> and replied, but perhaps Marco uses a narrower spectrogram window than 
> I do... The reason for this frequency was that there is a null in the 
> amplitude of DCF39's sidebands at about 137.64kHz, so received SNR is 
> considerably better at this slightly lower frequency - Marco would 
> have been "O" copy if he was using the lower frequency.
>
> I also heard DK7FC RST 559 working DD7PC (not audible) on 136.5kHz. I 
> tried calling in CW also, but apparently the noise level is too high.
>
> Cheers, Jim Moritz
> 73 de M0BMU