[GreenKeys] RYRY Signal plus Noise for RTTY testing enclosed

[W2HX]

What about having a special ITTY channel with RYs with a step-wise increase in s/n and then looping, Interesting!

-----Original Message-----
From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Lester Veenstra
Sent: Saturday, February 20, 2016 11:28 AM
To: 'Don Sentz'; 'Jim Backus'
Cc: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] RYRY Signal plus Noise for RTTY testing enclosed

What would be interesting (usefull),  would be a long file containing a series of say 6 lines each, of test message and the S/N identity imbedded in the test message line, followed by a few seconds of mark tone while the S/N is changed to next increment, and the test pattern repeated with updated S/N
id.   You probably have to post the file somewhere for downloading.  It
should include steps of 0 dB S/N and down ( - S/Ns) , assuming the S/N is "measured" in a 3 dB bandwidth.

This would provide a self annotating performance "curve" of the S/N vs BER of the demod. 

Lester B Veenstra  MØYCM K1YCM W8YCM
lester at veenstras.com

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