Russ --
You're calling some displays "bogus decodes", and evidently they are
bogus. But you appear to have all the knobs turned up to maximum
aggressiveness. Most if the displayed messages are flagged with "?",
which you may interpret as "caveat emptor", or some such.
Probably you saved "KF4FCO EM70" in your callsign database. How many
other calls are there?
The message "CQ KF4FCO EM70 OO" is clearly nonsense, so you could
reject it out of hand.
When we've had time to pay careful attention to some of these anomalies,
and especially when more people are using WSJT-X for their EME
operations, we'll clean up some of these peculiarities. In the
meantime, you'll need to use some common sense if you want to use very
aggressive decoding settings.
-- Joe, K1JT
On 12/15/2018 13:04, Russ wrote:
Bill, Joe, Charlie, whoever is interested; here is a new wrinkle to the
problem.
I was operating MSK144 on 2 meters. Got done and decided to switch to JT65
to see if the false decodes would start to happen. It didn't right away, so
went away for a while leaving it running. When I got back I had two decodes
showing in the average box: " CQ KF4FCO EM70". This was the last good
decode that I got on MSK144 ! I DID click to Clear Averages before this
happened. Here is all.txt. You can see the four good decodes and my CQ
around 1530, and then two bogus decodes of the same call, at 1743, some time
after I had switched to JT65. While I was typing this a local started up
calling CQ on the frequency I am on. And now there are six instances of the
same decode showing on the JT65 screen.
1523 -30 2.0 1327 ## CQ KF4FCO EM70 OO O d20
1527 -30 6.1 1550 # CQ KF4FCO EM70 ? d20
1539 -30 4.7 1598 # CQ KF4FCO EM70 ? d20
1544 -30 6.2 1436 # CQ KF4FCO EM70 ? d20
181215_154645 Transmitting 144.15 MHz MSK144: CQ K2TXB FN20
1743 -30 6.2 1368 # CQ KF4FCO EM70 ? d20
1748 -30 6.0 1595 # CQ KF4FCO EM70 ? d20
And Joe suggested checking the average window. For the period in question
it had only one entry:
. 1727 -1.2 -1.09 1399 *
That is 16 minutes before the first bogus decode and does not appear to be
related.
73, Russ K2TXB
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