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Re: LF: OPdynamic false T/A spot

To: <[email protected]>
Subject: Re: LF: OPdynamic false T/A spot
From: <[email protected]>
Date: Wed, 4 Feb 2015 09:36:28 -0500
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References: <003501d03e26$e235a430$6401a8c0@JAYDELL>, <00b001d03ffc$9136a390$6d01a8c0@DELL4> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Mike

We agree that OPdynamic spots with ?? should not be uploaded ... but that isn't the case at the moment. The R7NT OPdynamic spot of WD2XNS (10 hours after the transmitter was turned off) shows up right along with all of the genuine spots - it's indistinguishable. This is a problem and seriously undermines the credibility of OPERA.

As for callsigns only being held for a short time in the deep search list ... I going to have to disagree. While it may put a bandaid on the serious OPdynamic problem with false spots it makes it far too easy on the correlation detector. It's possible that only one callsign might be on the list! I'd much rather have the DF6NM system where all possible stations (about 30 stations last time I checked) are present all the time. The game sure seems a lot less 'rigged' when the correlation detector has to analyze 30 callsigns rather than just one or maybe two.

When you think about it, the DF6NM system must be vastly superior to OPdynamic ... considering the minute number of false spots with 30 callsigns to pick from. OPdynamic produces far more false spots and it only has a few callsigns to choose from at any time. Reducing OPdynamics choices even further (by shortening the 'holding time') would reduce false spots ... but that just points up how inferior OPdynamic really is. Not a good solution in my opinion.

Jay W1VD  WD2XNS  WE2XGR/2





----- Original Message ----- From: "Mike Dennison" <[email protected]>
To: <[email protected]>
Sent: Wednesday, February 04, 2015 5:50 AM
Subject: Re: LF: OPdynamic false T/A spot


Jay,

I am inclined to agree with you, but almost all of the Deep Search
spots that have no question marks are genuine. If at all possible,
spots =with= the question marks should not be uploaded to PSK
Reporter as most are false.

Also, I suggested early on that callsigns are on the database for too
long, and should only be a couple of hours after the last known
'real' Op decode.

These steps would of course slightly reduce the number of genuine
weak signals decoded/reported but the result would be far more
accurate and still show a useful increase in sensitivity over Op.

Mike, G3XDV
==========

Yes, we're all aware that the spots are not checked. The problem is
PSK Reporter apparently has no way to present the ?? from an OPdynamic
spot. Since the ?? are not there, the ?? spots  look exactly the same
as real spots. This is a serious problem as there is no way to tell
the difference! OPdynamic spots should not be unploaded to PSK
Reporter until this problem is corrected. Until it's corrected all OP
reports obtained from PSK Reporter should be viewed with a great deal
of skepticism.

I have no clue as to the point you're trying to get across in the rest
of your post. It doesn't appear relevant to the bigger problem
outlined above.

Jay W1VD  WD2XNS  WE2XGR/2





----- Original Message ----- From: "Graham" <[email protected]>
To: <[email protected]>
Sent: Tuesday, February 03, 2015 3:23 PM
Subject: Re: LF: OPdynamic false T/A spot


> over 10 hours since the
> transmitter was last on
>
> Could  of  been  long path ?
>
> Unfortunately , as  in any mode ,  the uploads to  the  psk-map
> are  not checked ,
>
> There  is  something  odd  about the  15-07  spot  as   one  is  -42
>  and the  other  -43 ,  must be  x2  opera running  with the  same
> audio feed , as there  are   x 2  spots  from the  same call
>
> X 2  Opera  with  same audio  feed  will  produce the  same  results
> .  in this  case  the  system has  x2  the  same call  from the
> same  station , so  looks  to  be  real, un expected  condition  ,
> out  side the  operating  envelope
>
> 73-G,
>
> --------------------------------------------------
> From: <[email protected]>
> Sent: Sunday, February 01, 2015 3:59 PM
> To: <[email protected]>
> Subject: Re: LF: OPdynamic false T/A spot
>
>> According to PSK reporter I now have a spot from  R7NT as of 1507
>> UTC ... over 10 hours since the transmitter was last on ... and in
>> broad daylight! Reports generated by PSK reporter do not show ??
>> ... they appear an any normal spot and might be accepted as such.
>> I, and other folks,  don't leave OP software running 24/7 so how
>> are we to know the spots shown on PSK reporter are real or not? I
>> would say OPdynamic spots should not be forwarded to PSK reporter.
>>
>> Maybe I can apply for an award ... most spots collected without the
>> transmitter even being turned on! ;~)
>>
>> Jay W1VD  WD2XNS  WE2XGR/2
>>
>>
>>
>> ----- Original Message ----- >> From: "Graham" <[email protected]>
>> To: <[email protected]>
>> Sent: Sunday, February 01, 2015 9:13 AM
>> Subject: Re: LF: OPdynamic false T/A spot
>>
>>
>>> Jay,
>>>
>>> -25  over 1000 Miles ,  nice  going  !
>>>
>>> Another  1 dB  [ish]  would  of  triggered  the  opera  decoder
>>> with Mike.. 4 min lag  is spot-on SP5  is   100%  random  ,  will
>>> of been  flagged    '??'  on the  opera listing
>>>
>>> 73-G,
>>>
>>>
>>>
>>>
>>> sNR mode MHz rxTime senderCallsign senderLocator
>>> receiverCallsignreceiverLocator receiverAntennaInformation submode
>>> OPERA 0.136 01/02/2015 01:05 WD2XNS FN31LS WD2XNS FN31LS Beacon
>>> Op32 every 00:00 OPERA 0.136 01/02/2015 01:22 WD2XNS FN31LS WD2XNS
>>> FN31LS Beacon Op32 every 00:00 OPERA 0.136 01/02/2015 01:42 WD2XNS
>>> FN31LS WD2XNS FN31LS Beacon Op32 every 00:00-17 OPERA 0.136
>>> 01/02/2015 01:45 WD2XNS FN31LS KA9CFD EN40OM RX Op326 OPERA 0.136
>>> 01/02/2015 01:45 WD2XNS FN31LS W1TAG FN42CH RX Op32 OPERA 0.136
>>> 01/02/2015 02:00 WD2XNS FN31LS WD2XNS FN31LS Beacon Op32 every
>>> 00:00 OPERA 0.136 01/02/2015 02:18 WD2XNS FN31LS WD2XNS FN31LS
>>> Beacon Op32 every 00:00-23 OPERA 0.136 01/02/2015 02:18 WD2XNS
>>> FN31LS KA9CFD EN40OM RX Op325 OPERA 0.136 01/02/2015 02:18 WD2XNS
>>> FN31LS W1TAG FN42CH RX Op32 OPERA 0.136 01/02/2015 02:38 WD2XNS
>>> FN31LS WD2XNS FN31LS Beacon Op32 every 00:00-27 OPERA 0.136
>>> 01/02/2015 02:51 WD2XNS FN31LS KA9CFD EN40OM RX Op326 OPERA 0.136
>>> 01/02/2015 02:51 WD2XNS FN31LS W1TAG FN42CH RX Op32 OPERA 0.136
>>> 01/02/2015 02:55 WD2XNS FN31LS WD2XNS FN31LS Beacon Op32 every
>>> 00:00 OPERA 0.136 01/02/2015 03:15 WD2XNS FN31LS WD2XNS FN31LS
>>> Beacon Op32 every 00:00-23 OPERA 0.136 01/02/2015 03:24 WD2XNS
>>> FN31LS KA9CFD EN40OM RX Op326 OPERA 0.136 01/02/2015 03:24 WD2XNS
>>> FN31LS W1TAG FN42CH RX Op32 OPERA 0.136 01/02/2015 03:33 WD2XNS
>>> FN31LS WD2XNS FN31LS Beacon Op32 every 00:00 OPERA 0.136
>>> 01/02/2015 03:53 WD2XNS FN31LS WD2XNS FN31LS Beacon Op32 every
>>> 00:005 OPERA 0.136 01/02/2015 03:56 WD2XNS FN31LS W1TAG FN42CH RX
>>> Op32-25 OPERA 0.136 01/02/2015 03:56 WD2XNS FN31LS KA9CFD EN40OM
>>> RX Op32-31 OPERA 0.136 01/02/2015 03:56 WD2XNS FN31LS K3SIW-2
>>> EN52TA RX Op32 OPERA 0.136 01/02/2015 04:11 WD2XNS FN31LS WD2XNS
>>> FN31LS Beacon Op32 every 00:00 OPERA 0.136 01/02/2015 04:29 WD2XNS
>>> FN31LS WD2XNS FN31LS Beacon Op32 every 00:00-27 OPERA 0.136
>>> 01/02/2015 04:29 WD2XNS FN31LS K3SIW-2 EN52TA RX Op325 OPERA 0.136
>>> 01/02/2015 04:29 WD2XNS FN31LS W1TAG FN42CH RX Op32 OPERA 0.136
>>> 01/02/2015 04:49 WD2XNS FN31LS WD2XNS FN31LS Beacon Op32 every
>>> 00:00-22 OPERA 0.136 01/02/2015 05:02 WD2XNS FN31LS K3SIW-2 EN52TA
>>> RX Op326 OPERA 0.136 01/02/2015 05:02 WD2XNS FN31LS W1TAG FN42CH
>>> RX Op32-43 OPERA 0.136 01/02/2015 05:06 WD2XNS FN31LS G3XDV IO91VT
>>> Op32_||||_~36dB
>>>
>>> --FALSE---43 OPERA 0.136 01/02/2015 07:30 WD2XNS FN31LS SP5XSB
>>> KO02LD RX Op32--------------------------------------------------
>>> From: <[email protected]> Sent: Sunday, February 01, 2015 1:56
>>> PM To: <[email protected]> Subject: LF: OPdynamic false
>>> T/A spot
>>>
>>>> In checking last night's spots for WD2XNS ... the spot by SP5XSB
>>>> occured after the WD2XNS transmitter had been off for over two
>>>> hours. Please
>
>




-----
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02/03/15






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