[GreenKeys] copying RTTY off the air

[Duncan Brown]

Russ, you beat me to it!  I was just about to mention DWD, also. DDK9 on 
10.1009 comes in strong in the afternoon here in western NY state.

Don't be put off by the fact that they are running 50 baud.  Your 45 
baud machine will copy it fine! (you can turn your Range control down 
some, but it won't make a lot of difference.)

The shift is more of a problem - you won't be able to copy them with 170 
Hz filters. But set for 850 Hz shift, most TUs will copy OK if they have 
a linear detector. Don't have to put up with any QRM on DDK9. (My ST-6 
came with a 425 Hz filter.)

Have fun,

Duncan
K2OEQ



On 04-May-20 21:11, Russ Miller wrote:
>
> One regular service transmitting RTTY meteorological information is 
> the German Meteorological Service (Deutscher Wetterdienst or DWD) 
> <http://www.dwd.de/>. The DWD regularly transmit two programs on 
> various frequencies on LF 
> <https://en.wikipedia.org/wiki/Low_frequency> and HF 
> <https://en.wikipedia.org/wiki/High_frequency> in standard RTTY (ITA-2 
> alphabet). The list of callsigns, frequencies, baud rates 
> <https://en.wikipedia.org/wiki/Baud> and shifts are as follows:^[
>
> Callsign 	Frequency 	speed/shift
> DDH47 	147.3 kHz 	50 baud/85 Hz
> DDK2 	4583 kHz 	50 baud/450 Hz
> DDH7 	7646 kHz 	50 baud/450 Hz
> DDK9 	10100.8 kHz 	50 baud/450 Hz
> DDH9 	11039 kHz 	50 baud/450 Hz
> DDH8 	14467.3 kHz 	50 baud/450 Hz
>
>
> The DWD signals can be easily received in Europe, North Africa and 
> parts of North America.
>
> On Mon, May 4, 2020 at 8:07 PM Nick England <navy.radio at gmail.com 
> <mailto:navy.radio at gmail.com>> wrote:
>
>     FWIW, I have come across a couple of regular RTTY transmissions to
>     exercise my machinery
>     1) The ARRL Bulletin
>     http://www.arrl.org/w1aw-operating-schedule#digital
>     Frequencies are 3.5975, 7.095, 14.095, 18.1025, 21.095, 28.095,
>     50.350, and 147.555 MHz.
>     Weekday 2200Z and 0100Z rotating schedule of modes including 60wpm
>     Baudot. Also Satellite info at 6:30pm Eastern on Tues and Fri
>     http://www.arrl.org/files/file/W1AW/W1AW%20Daily%20Digital%20Bulletin%20Schedule.pdf
>
>     2) Weekly QSO sched W8DRM (Lima OH) and WD9GMK (Southport NC) on
>     7085 - Tuesdays around 8:30pm Eastern - I was just "reading the
>     mail" and startled to hear an actual RTTY QSO lasting longer than
>     385 microseconds (see #4).
>
>     3) Special events station K2H (New York) on 7085 at 2200Z - I
>     don't know what days. They were calling CQ but disappeared before
>     I could get my 70-tube transmitter going....
>
>     4) There were lots of RTTY stations in some contest this past
>     weekend, but their computers had exchanged "599 TU QRZ" before I
>     could even tune in to copy anyone except for the unsuccessful
>     folks calling CQ multiple times.
>
>     Frequencies are (I think) the high MARK frequencies - I was using
>     military gear and could only get close - I can tune in 100Hz
>     increments with +/-85 or +/-425 Hz shift. So I'd tune to 7085.9
>     LSB to copy a "7085" signal...using LSB to invert things to
>     military MARK low with 1000 Hz +/-85 Hz tone.
>
>     5) West coast Clatternet Saturdays 7087 USB 850 shoft
>     http://www.mrcgwest.org/mrcg-radio-nets/
>
>     6) Any more???
>
>     Cheers,
>     Nick England K4NYW
>     www.navy-radio.com <http://www.navy-radio.com>
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