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Re: LF: WSPR-64

To: [email protected]
Subject: Re: LF: WSPR-64
From: Markus Vester <[email protected]>
Date: Sat, 13 Oct 2012 11:44:12 -0400 (EDT)
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Hi Steinar, Roland,
 
your scripts look right, with the exception that RX recording should start 32x 1.5s = 48s early, so instead of
 waitraster 3600 -24
please use
 waitraster 3600 -48
 
Good luck for the experiment!
 
Best 73,
Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: Steinar Aanesland <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Sa, 13 Okt 2012 2:53 pm
Betreff: Re: LF: WSPR-64

Hi Roland 

First, I made a typo in my email. It should be wspr-64 .

Markus (DF6NM) sent me this text some time ago:

"WSPR 64 can be generated and received with the current setup. You would
only have to change decimation factor from /dec=2048 to 4096, and adapt
the arguments in the waitraster commands (repeat period and leadtimes)
to full hour frames (3600 instead of 1800, etc). "

If I have not completely misunderstood Markus, I think here is the right
parameters:

For TX :

del audio1.dat
start sndoutp1.exe /sr=48000 /dec=4096 /fc=660 /fn=audio1.dat /gain=1
:loop
waitraster 3600 20
copy wspr.dat audio1.dat
sleep 5
goto loop

I will use this for RX:

del audio.tmp
del audio2.dat
start sndoutpt.exe /sr=48000 /fc=1500 /dec=128 /fn=audio2.dat
start sndinput.exe /sr=48000 /fc=1500 /dec=4096 /maxsize=200k
waitraster 3600 -24
del audio.dat
:loop
waitraster 3600 -24
del audio.dat
waitraster -120 -1.5
copy audio.dat audio2.dat
goto loop

NB! I am using fc=1500 on in- and output, but you can use your own
settings.

LA5VNA Steinar
loc:JO59jq
Mal and spam filtering: STRONG
www.opera.no









Den 13.10.2012 16:25, skrev Roland Bruestle:
> Hello Steinar,
> I can do it. I will start with 2W on the PA according 10mW ERP on
> 474.86kHz.
> I send you my parameters. Pleas check it.
> How exact has the frequency to be? within ± 3Hz?
>
> Roland DL3NDR
>
>
>
> PS: I still would like to make a wspr-60 experiment trying to receive
> from a transmitter with reduced power, but then some of you have to do
> the TXing..
>
> LA5VNA Steinar
> loc:jo59jq
>
>
>
>
>





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