[Lowfer] OPDS callsign recognition info

[jrusgrove at comcast.net]

Everyone that has actually gone through the trials and tribulations of successfully setting up OPDS 
is well aware that it is correlation software. Look at the worldwide grabbers and dropbox text files 
... they all use the words 'detections' and 'correlations'. No one is pushing the notion of 
'decodes'.

http://www.w1vd.com/OPDSgrabber.html
http://dl.dropboxusercontent.com/u/74746618/LF/YV7MAE_LF_Grabber_OPDS.html
http://dl.dropboxusercontent.com/u/13099852/detected.txt
http://dl.dropboxusercontent.com/u/10326787/detected.txt
http://www.iup.uni-heidelberg.de/schaefer_vlf/LF/OPDS32.txt
http://dl.dropboxusercontent.com/u/26404526/opds.htm
http://dl.dropboxusercontent.com/s/4ebkrzdfmxqruvl/DETECTED.TXT
http://dl.dropboxusercontent.com/u/10280270/DETECTED.TXT
http://qsl.net/ew6bn/opds.htm
http://dl.dropboxusercontent.com/u/76751319/opds32.txt

Might be instructive to learn about and actually use the software before spouting off.

Jay W1VD  WD2XNS  WE2XGR/2  WG2XRS/2





----- Original Message ----- 
From: "JD" <listread at lwca.org>
To: "Discussion of the Lowfer (US, European, &amp;UK) and MedFer bands" <lowfer at mailman.qth.net>
Sent: Thursday, December 19, 2013 11:21 PM
Subject: Re: [Lowfer] OPDS callsign recognition info


> Thanks for the correction, Andy!  That's a more complete text than what I
> found and downloaded recently, quoted in my earlier post.  Now I see why
> Doug asked the question, and evidently it is ALL template matching and NO
> decoding in the usual sense.  Sigh.  Sorry to mislead you, Doug, and I'm
> also sorry to learn that my prior somewhat cynical view of how OPDS works is
> even more true than I first suspected.
>
> That puts us back into the situation of comparing apples with orangutans,
> unfortunately, which I had briefly hoped there was a way out of.  How DO you
> fairly compare "sensitivity" of a program that can _only_ report a match-up
> to something it already knows to expect, against other software that
> actually decodes the transmitted information?
>
> At a bare minimum, we ought to at least refrain from using the misleading
> word "decode" for an OPDS match.
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