Message-ID: <5564A243.9010902@gmx.com>
Date: Tue, 26 May 2015 18:41:39 +0200
From: Jochen Althoff <althoff@gmx.com>
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Subject: Re: LF: 630M WSPR T/A - WSPR-15?
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Status: O

I am also on WSPR-15 tonight with my tx and running 2 rx, one on wspr-2 
and one on wspr-15.

73, Jochen df1vb


Am 26.05.2015 um 18:31 schrieb Andy Talbot:
> I'll be putting my WSPR-15 transmission on later.
> Probably starting around 2100(z)
>
> Andy  G4JNT
>
> On 26 May 2015 at 17:24, wolf_dl4yhf <dl4yhf@freenet.de
> <mailto:dl4yhf@freenet.de>> wrote:
>
>     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 475.2 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
>
>

-- 
  -= DF1VB =-
  -= KH2MM =-
Jochen Althoff
+49 171 2020206

"The wireless telegraph is not difficult to understand.
The ordinary telegraph is like a very long cat.
You pull the tail in New York, and it meows in Los Angeles.
The wireless is the same, only without the cat."
(Albert Einstein)