Re: [wsjtgroup] In the works for WSJT-X
- Hi Joe,
Thanks for the reassuring guidance! I have not tried MAP65 for a couple years, and
the last time I tried it, I found that it was a couple dB less sensitive than
JT65A. However, it sounds like I may not have had my settings optimized in
SDR-RADIO or my SDR-IQ. I will try to install the most recent version of MAP65
again after Es season is over and make a new comparison here on 6m EME.
Best wishes for a great summer and thanks again for all your wonderful work on this
sensitive software! VY 73, Lance
On 6/11/2013 2:25 AM, Joe Taylor wrote:
> Hi Lance,
> W7GJ wrote:
>> Do you have plans to make the JT65A decoder as sensitive as the one in
>> WSJT9? The one in MAP65 appears to be a couple dB less sensitive than
>> the highly optimized decoder in WSJT.
> What's the basis for your assertion that MAP65 is "a couple dB less
> sensitive than the highly optimized decoder in WSJT"? Or your
> implication that the decoder in MAP65 is any less highly optimized?
> Such impressions have never stood up to close examination.
> Of course I've made exhaustive comparisons among the various decoding
> algorithms and their implementation myself -- many times. I will be
> doing so again with the JT65 decoder in WSJT-X.
> For a wholly independent look at the question by W3SZ, see the detailed
> experiment and analysis on his web site:
> The bottom-line conclusion from W3SZ:
> "The MAP65 Decoder on same frequency as the WSJT Decoder at same time as
> the WSJT Decoder decoded about 10% of messages WSJT did not, and WSJT
> decoded about 10% of messages that MAP65 did not."
> The W3SZ test was based on observations of EME signals on 144 MHz, made
> during the 2013 ARRL EME Contest. I have demonstrated the same thing,
> to my own satisfaction, in a laboratory setting. It's good to see that
> real-world results are fully consistent with expectations.
> -- 73, Joe, K1JT
> To unsubscribe, send an email to:
> WSJTGroup Homepage --> http://www.wsjtgroup.org/
> Yahoo! Groups Links
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M)
P.O. Box 73
Frenchtown, MT 59834-0073
TEL: (406) 626-5728
Windows Messenger: W7GJ@...
2m DXCC #11/6m DXCC #815
Interested in 6m EME? Ask me about subscribing to the Magic Band EME
email group, or just fill in the request box at the bottom of my web