Re: LF: WSPR-64

[Markus Vester <markusvester@aol.com>]

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 <saanes@broadpark.no>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
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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