Return to KLUBNL.PL main page

[Top] [All Lists]

Re: LF: New version OPERA >> ''Opera Dynamic'' <<

To: <[email protected]>
Subject: Re: LF: New version OPERA >> ''Opera Dynamic'' <<
From: <[email protected]>
Date: Thu, 8 Jan 2015 15:55:29 -0500
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=q20140121; t=1420750534; bh=mluihq+9/bBRizhQ0F5TRdXqRwIO9ZOcYTLiIAz4mck=; h=Received:Received:Message-ID:From:To:Subject:Date:MIME-Version: Content-Type; b=hs8egt28KZdPYlnACstB930oatosVrpd3lTIvjRgiKTfcHpnbaNNOK2wzHh/RXOok nGuNGpEn7ikA41NCE5iNMrHV1LE5Yt7JbprAxe+3Hlw4ug4dGQLtH6NGOX9SNYmCE7 dihYbmmw2kUXNKKNc6S+jdVT1fiCpNAYKSk0K8cRSK52N8oBAFG443nabsek9eB1nI TShSpYtfP3x+AsY+7UeJHolpoRdRr7nF5T9yl6IvyluGSXzsCUdt9zL4K/F6djd4EM XhhaqJktEhkcQBQEDBpKKLoH1WzLBvBMTO9KEc7ibDRmSjMi0wcok+/Ir/83p74lTu lFst11b8YxW7A==
References: <[email protected]>, <[email protected]>, <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
DF6NM's OPDS is much closer to perfection. I take it you've never used OPDS ... so you're not aware of the differences in performance.  
Those two spots look good at first glance but they didn't adhere to the 4 minute time differential from standard mode reception. What is one to use to judge the likelyhood of a real spot? Unlike DF6NMs OPDS there's no correlation % and dB 'certainty' indicator, an accurate time indicator or an accurate frequency readout that can be compared to other grabbers for corroboration
With so many bogus spots in Jose's deep search it's hard to trust any of them.
Jay W1VD  WD2XNS  WE2XGR/2  
----- Original Message -----
From: Graham
Sent: Thursday, January 08, 2015 12:35 PM
Subject: Re: LF: New version OPERA >> ''Opera Dynamic'' <<


Well  nothing is  perfect ,  all  the  beacon systems produce  strange  spots  

I don't even   have  a  136  Tx  and  am  regularly  spotted on 136

2015-01-01 19:01:38 G0NBD   2056km 137513.376Hz   3mHz -36.6dBOp  95% 15.4dB

This looks  convincing to  me, two  at  the  same time into  UK/SV

00:34    136 WD2XNS de SV8CS Op32 Deep Search 4722 mi -42 dB in Zakynthos Island with 1w +
00:34    136 WD2XNS de 2E0ILY Op32 Deep Search 3245 mi -42 dB in Shropshire IO82qv with 1w +

As for   the  pdf ,  I got  the  impression  the  11 dB  claim  in the  opds  document  was a  little  optimistic, I note  Markus  talked  of  9 dB in a  recent  post, I assume that was perceived  as a  challenge ?, other than that content is  solely  under the  control  of the  artistic  director. 

One  thing  this  is 100% certain  technical  issues still  take  on a  east / west  divide ,
24 Hour  wspr  on LF 
24 Hours  Opera  LF

From: <[email protected]>
Sent: Thursday, January 08, 2015 3:10 PM
To: <[email protected]>
Subject: Re: LF: New version  OPERA  >>  ''Opera Dynamic'' << 

> Graham
> I won't be quite a 'charatable' as Mike ...
> There were at least two false detections on my transmitted signal (WD2XNS) last night that I saw ...
> one into G and one into SV. About the only way to tell they were false detections was the time lag
> between actual and the 'Deep Search' output - it wasn't the expected 4 minutes. Had there been no
> 'real' receptions during that time period one might have actually believed what was reported ... as
> you did and reported on the Yahoo reflector.
> On receive from here last night from there were false detections of VO1NA.
> I saw one detection of a G station in JA make the list! This was clearly a false detection. No doubt
> there were plenty of other false detections but after this couple hour 'outing' with 1.5.5 I gave up
> on it. It's clearly not ready for prime time and should be pulled from circulation and return to the
> drawing board!
> Perhaps the author, instead of taking the time to write a 'propaganda' .pdf page about DF6NM's OPDS
> and include it with the download, should spend more time actually making his software work as well
> as Markus's. In almost a year of using OPDS I have identified only one false detection. This is
> severly at odds with Jose's test of OPDS. Since Jose seems to now like the idea of Deep Search,
> maybe he should 'borrow' more ideas from Markus ... like the correlation % and dB 'certainty'
> indicator, an accurate time indicator and a highly accurate frequency readout. These indicators,
> especially when correlated with other OPDS users grabbers, makes the very rare false detection with
> OPDS obvious.
> At this point Markus's OPDS runs circles around Jose's Deep Search ... regardless of what his
> 'propaganda' page says.
> Jay W1VD  WD2XNS  WE2XGR/2
<Prev in Thread] Current Thread [Next in Thread>