Wednesday, 18 September 2013

CW Decode from HO-68 using MultimonNG

Using the pass from 09:45 UTC this morning, I recorded some CW from the beacon which peaked around 35-40dB over the noise. If I decode it in dl-fldigi (via an 8kHz, 8 bit WAV file) I get this output (for reference it should look like this):

* J 1 S A X W X W A A A T T T A U 4 A T E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
* J 1 S A X W X W A A A T T T A U 4 T B E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
* J 1 S A X W X W A A A T T T A U 4 T N T E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W 

* J 1 S A X W X W A A A T T T A U 4 A V T E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
* J 1 S A X W XWUA AT**R*W X W
* J 1 S A X W X W A A A T T T A U 4 A V E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W 

* J 1 S A X W X W A A A T T T A U 4 T B E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W 
* J 1 S A X W X W A A A T T T A U 4 A V T E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W 
* J 1 S A X W X W A A A T T T A U 4 T D T E T T T G T T T T M T M X T M M A D**

If I use the new version of MulitmonNG I get this (using the standard default arguments - i.e. not changing -g or -d):


              X W A A A T T T A U 4 A T E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
B J 1 S A X W X W A A A T T T A U 4 T B E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
B J 1 S A X W X W A A A T T T A U 4 T N T E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
B J 1 S A X W X W A A A T T T A U 4 A V T E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W

                W A A A T T T A U 4 A V E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
B J 1 S A X W X W A A A T T T A U 4 T B E E T T T T T T T T T T T T T T T T T T T T T T T T T T X W X W
B J 1 S A X W X W A A A T T T A U <..._..>A V T E T T T T T T T T T T T T T T T T T T T T T T F


So multimon certainly doesn't do a bad job, but it has some room for improvement. I'll try tweaking the values of -g, -d, etc and see how that changes  things.

No comments:

Post a Comment