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Jay , noted,
From past experience , the introduction of new
technology via news groups has been proved to
be counter productive for all involved ,
Take the introduction of the ROS-HF mode
, combining direct sequence and cdma ,
to give parallel access to a single
channel combined with low power requirements and
qso ability akin to packet in the connected
state , with no loss of throughput , ie 2G mobile
phone technology
The usa , now suffering from lack of
bandwidth and over crowded data sections of
the bands , still has no access to
technology that would solve the problem ,
those who did try to resolve the problem ,
where branded un patriotic by other users
inside the usa , the latest JT modes are smaller
b/w but still support only pre-formatted
text on a one to one qso basis
. meanwhile , rest of world makes
good use of the technology , stats from the
psk-map show 665 uses in a 7
day period , even the 27MHz CB users use it for
long haul dx , bright green on the map. As the 24
Hr shot shows , saturation usage inside EU
especially on 14.103 -yellow-
Ive noted the posts and comments etc, may be
true from an observers point of view, but from
a engineering design aspect the comments are
merely observations on engineering facts , simple
as that , development continues ..
73-G,
Sent: Thursday, January 08, 2015 10:56 PM
Subject: Re: LF: New version OPERA >> ''Opera Dynamic''
<<
Graham
The shift last night on my transmission was 2
minutes - significantly under the 4 or 5 minutes that has been stated as
'processing time'. With no OPDS reception at DK7FC, DF6NM or anywhere else
in EU, and with all of the false detections appearing on the screen I would not
put any trust in those detections. From here, SV is an incredibly difficult
shot. IIRC my signal has never been received there and I have received SV8CS
only one time ... ever!
You can try and belittle DF6NM OPDS setup procedure
but it's becoming clear from the posts here, and in private e mails I've
received from users of both 'systems', that there's a serious problem
with false decodes in Jose's system. I agree with LA4ANA's comments about
how important it is to keep false detections to an absolute minimum. The
responsible thing to do would be to pull OP 1.5.5 from circulation and
encourage stations not to use it until a better functioning version is
available.
At this point I have little interest in
transmitting OP so as not to contribute to this problem.
Jay W1VD WD2XNS
WE2XGR/2
----- Original Message -----
Sent: Thursday, January 08, 2015 5:11
PM
Subject: Re: LF: New version OPERA
>> ''Opera Dynamic'' <<
There 1000 miles apart and exactly
the same time , the 4 min shift is not
a timed function , this shows 5 tonight
19:10 136 G8HUH de SV8RV-14 Op32 Deep Search 1487 mi -42 dB in
Zakynthos(Zante) isl. GREECE
19:05 136 G8HUH de GW0EZY Op32 94 mi -8 dB F:21% in Welshpool
IO82ho
yes I have the opds system , even
edited the file paths in the config.sys or what
ever , bit like old bike , needs a few
adjustments to get it going , all the
decision making logic is contained with in
the package .
So far tonight , everything looks ok
73-G,
Sent: Thursday, January 08, 2015 8:55 PM
Subject: Re: LF: New version OPERA >> ''Opera Dynamic''
<<
Graham
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 -----
Sent: Thursday, January 08, 2015 12:35
PM
Subject: Re: LF: New version OPERA
>> ''Opera Dynamic'' <<
Jay,
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 ,
73-Graham
G0NBD
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 > >
>
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