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Date: Tue, 26 May 2015 20:03:55 +0200
From: Tobias DG3LV <DG3LV@gmx.net>
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Subject: Re: LF: 630M WSPR T/A - WSPR-15?
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Hi Wolf, Markus !

For testing purposes you could run WSPR-2-mode twice as well instead of 
-15 and -2.

Better use two installations of WSPR-X into two separate directories 
from Root C:\, as WSPR writes temporary *.wav and *.C2-files to its 
"save"-subdirectory (even at save=none). They are deleted immediately 
after decode. Maybe one instance deletes the file of the concurrent 
instance. At WSPR-15 and WSPR-2 both beginn their cycle at 00:00 and 
00:30, so the filenames may be identical, leaving to confusion. There 
will be NO errormessages warning you!

At the beginning of WSPR-X we learned that whitespace characters in 
directory-names as well as local characters (German "Umlaute") are a bad 
idea. This has not changed. Best use old-fashioned DOS names like 
C:\wspr_2 and C:\wspr_15 or similar. There are no errormessages or 
crash, it just will not decode anything. (experience of Stefan DK7FC at 
that time)

73 de dg3lv Tobias

Am 26.05.2015 um 18:56 schrieb Markus Vester:
> Hi Wolf,
> that's exactly what I did too, with same results: wspr-2 running and
> uploading fine, no chance to test -15 due to lack of signals. But if
> signals had been present on both bands, wouldn't both instances try to
> access the same files in the same directory, eg. ALL_WSPR.TXT or
> settings? Well, with Andy on -15 we may find out tonight.
> All the best,
> Markus (DF6NM)
> BTW I decoded DF1VB for a while with 6.5 seconds latency, and then no
> more - might have been a too large clock offset.
>
>
> -----Ursprüngliche Mitteilung-----
> Von: wolf_dl4yhf <dl4yhf@freenet.de>
> An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
> Verschickt: Di, 26 Mai 2015 6:27 pm
> Betreff: Re: LF: 630M WSPR T/A - WSPR-15?
>
> rrr Stefan and Markus - thanks for the info.
>
> I have two instances of WSPR-X running, launched from the same
> directory, one configured (manually) for WSPR-2 and the other for -15.
> Not a single decode from the latter yet.
>
> I guess as long as they run, the two instances don't interfear (:o)
>
> 73,
>    Wolf DL4YHF .
>
>
> Am 26.05.2015 02:19, schrieb Markus Vester:
>> Wolf, as far as I know the only way to separate them in the database
>> seems to be sorting by frequency (which is not very useful otherwise).
>> There is a peculiarity in that the hh:15 and hh:45 timestamps in the
>> database seem to be "rectified" to even minutes (hh:16 and hh:46) at
>> midnight UT (just happened to G4JNT entries).
>> Stefan, I'm not sure about not using -15 on MF. Even though fading is
>> faster and deeper, the WSPR decoder seems to cope well with it. After
>> all WSPR-2 is useful on HF where fading happens in seconds. The
>> spectrogram of Andy's transmission last night sometimes showed two
>> deep fades in one sequence, but it was decoded ok. It has been argued
>> that a very short and strong maximum might be utilized by -2 and not
>> by -15, and maybe there's not all of the theoretical 9 dB gain, but I
>> reckon on average it's not much less.
>> Laurence yes your frequencies are correct, dial *474.2 kHz*, RF: 475.6
>> - 475.8 WSPR-2, 475.8 - 475.825 WSPR-15.
>> I wonder if it is possible to run two instances of WSPRX side by side
>> on the same machine, one for -2 and one for -15? Or would they crash
>> one another?
>> 73, Markus
>>
>> *From:* DK7FC <mailto:selberdenken@posteo.de>
>> *Sent:* Tuesday, May 26, 2015 1:16 AM
>> *To:* rsgb_lf_group@blacksheep.org <mailto:rsgb_lf_group@blacksheep.org>
>> *Subject:* Re: LF: 630M WSPR T/A
>>
>> Am 25.05.2015 22:55, schrieb wolf_dl4yhf:
>>> p.s. is there a possibility to filter / display only WSPR-15 decodes
>>> from the database, and how widespread is the use of that mode ?
>>
>> ...there have been a few MF TA tests in WSPR-15 in the early 630m
>> days, showing that this mode is to slow for the path on that band.
>> These tests have not been very extended though. But most likely there
>> is not a 'gain' of 9 dB over WSPR-2. I would assume that successful
>> detections are even less likely in that mode over the pond.
>>
>> 73, Stefan
>