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

To: <[email protected]>
Subject: Re: LF: New version OPERA >> ''Opera Dynamic'' <<
From: "Graham" <[email protected]>
Date: Fri, 9 Jan 2015 19:49:34 -0000
Importance: Normal
In-reply-to: <[email protected]>
References: <[email protected]>, <[email protected]>, <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]

Mike ,  new  version  1-5-6  

In this  a  single  false  opdy   spot  is  flagged  with    Deep Search ??  Two  spots  of the  same  station  are taken as Ok  text  is 

19:29 136 JA8SCD de JA8SCD/1 Op32 Deep Search ?? 0 mi -42 dB in Tokyo


In this  case .  JA is real  , but  only  1  station   detect   the  signal , but  as  only  1  report ,  tagged  ''??''

This  is  the  disputed  time .  the  4  mins  is  not  a  timed event ,  its  determined  by  varying  factors ,
in this  case  two  spots   at  0034 would  indicate  a  genuine   spot ,  last night  some  showed  5 mins  lag


-19 OPERA 0.136 08/01/2015 00:32 United States 1420677133 WD2XNS FN31LS W3NF FM19MH RX Op32 291
-33 OPERA 0.136 08/01/2015 00:32 United States 1420677133 WD2XNS FN31LS WD4KPD FM15MM RX Op32 291
-17 OPERA 0.136 08/01/2015 00:32 United States 1420677133 WD2XNS FN31LS K3SIW-1 EN52TA RX Op32 291
-42 OPERA 0.136 08/01/2015 00:34 United States 1420677244 WD2XNS FN31LS SV8CS KM07JR
-42 OPERA 0.136 08/01/2015 00:34 United States 1420677246 WD2XNS FN31LS 2E0ILY IO82QV RX Op32 291

In this  case ,  LA3EQ  is  spotted  by 2  op decodes  , with  5 min  lag  for  DY, could  be  +/-  59  seconds  inside  the  1  min  step as  well ..  spot  passed  by  quality  check

19:39    136 LA3EQ de G3XDV Op32 Deep Search 515 mi -40 dB in Welwyn IO91VT with 0.01w + Marconi-T
19:34    136 LA3EQ de DL-SWL Op32 437 mi -28 dB F:6% in nr Wolfsburg with 0.01w + Marconi-T
19:34    136 LA3EQ de DF1VB Op32 485 mi -34 dB F:3% in Dortmund with 0.01w + Marconi-T


73-G,



--------------------------------------------------
From: "Mike Dennison" <[email protected]>
Sent: Friday, January 09, 2015 11:11 AM
To: <[email protected]>
Subject: Re: LF: New version  OPERA  >>  ''Opera Dynamic'' << 

> Graham,
>
> The example you give below does not prove your case. In fact it does
> the opposite. The last figure in the OPDS readout, "15.4dB", shows
> that the decode is at the very edge of deciding that it is true and
> must therefore be viewed with suspicion. OP does not have that kind
> of figure. There is a lot of information in both the OPDS and WSPR
> data that can flag up possible false decodes. The beauty of Opera is
> that it is simple, but that is creating a problem here.
>
>> 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
>
> The information below is even more worrying. Until now it seemed that
> every false decode was reported by only one station. Jay says he was
> not active but two stations concluded that what they saw was his
> transmission.
>
>> 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 +
>
> This is definitely still a work in progress.
>
> Mike, G3XDV
> ==========
>
>
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