RE: LF: 74550 XRS in Germany

[Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>]

Hi Bob,

 

you got the call correct ;-)

The main advantage of DFCW (over QRSS) is that at the same dotlength the speed is about 3 times higher, due to the fact that dots and dashed have the same length (see http://www.qsl.net/on7yd/136narro.htm#DFCW).

 

73, Rik  ON7YD - OR7T

 

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Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Bob Raide [rjraide@hotmail.com]
Verzonden: zondag 29 september 2013 19:06
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: RE: LF: 74550 XRS in Germany

Stefan;
I notice you always use DFCW.  I also noticed John Andrews does too the last time I saw him on 73.  Yes I think it is easy for me to change.  I use the ON7YD [hope I have his call correct] program and feed my SSB exciter with the laptop with that program and I see it available on his "options" page.  I was going to ask you why you use it.  Now I know and I will try it tonite-Bob
 

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Date: Sun, 29 Sep 2013 18:55:24 +0200
From: Stefan.Schaefer@iup.uni-heidelberg.de
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: 74550 XRS in Germany

Hello Bob and Hartmut,

My congratulation for that success. Both of you must have a very suitable system to radiate respectively receive a signal on the 4000m band!

Bob, can you transmit DFCW? If 4000m behaves reasonable like 2200m, then DFCW-180 should be a good choice! It is a bit slower and may allow reception of your signal even for station with lower RX sensitivity than Hartmut offers. Also DFCW gives you a better ID since the frequency shift is another indicator which separates your signal from random QRM...

73, GL, Stefan/DK7FC


Am 29.09.2013 10:23, schrieb Hartmut Wolff:

Bob,

the capture is a bit tiny, because I used a qrss 120 screen. Your signal was drifting and you crossed the Loran line just before 04:00. For the future a frequency 1 Hz lower would be better.

73

Hartmut