Hi,
WA2TP here. I also have a rip-SDR and 4 kiwi SDR.
Frequency drift could be due to gps lock.
Are you allowing gps clock to auto adjust?
Do you have at least 6 locks?
73
Tom
WA2TP
Tom
WA2TP
________________________________
From: alaw...@mudhawk.com <alaw...@mudhawk.com>
Sent: Tuesday, September 22, 2020 8:14:22 AM
To: Black via <wsjt-devel@lists.sourceforge.net>
Subject: [wsjt-devel] Recurring wspr mis-decode 4BU/E50JJU
HI Folks,
I have a RPI/SDR/WSJTX-2.2.2 configuration that I leave listening on wspr
most of the time when my station is idle. (I don't think the version of
wsjtx is not relevant here - just mentioning it for completeness)
One thing I notice is a persistent recurring decode of:
4BU/E50JJU with no grid, and a reported power level of 7dbm.
Frequencies vary a bit, and times can drift to +- 2 seconds of my expected
2 second DT value. (I have a slow receive chain.)
This morning I actually saw 2 decodes of this in the same 2 minute window
with several seconds of difference between them.
I see this on several bands, although just this morning I saw it on 3 times
in a row on 630m and again on 60m.
My sense is that this is some artifact of my off-grid solar system (which is
pretty noisy) crashing through on an IF Frequency, but I'm intrigued by the
prevalence of this particular mis-decode, since other misdecodes are actually
pretty rare for me.
Is there any value to the developers in saving/sharing this information?
(Presumably it is also being reported to
wsprnet.org<https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwsprnet.org%2F&data=02%7C01%7C%7C57cdcfc018654febe96508d85ef1b855%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637363739550489094&sdata=2azF0iLiSVXYNnsniA8rUHHk%2BaM9PdgKLDsT%2FwFS2Rs%3D&reserved=0>,
although I can't find it in a query.)
Thanks for any thoughts,
--al
WB1BQE
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