Greetings Steinar.
It seems to me that both of your issues could be caused by a high local
noise level at your end. Let's look at the second issue first.
WSJT-X doesn't report the absolute signal strength ... it reports the
signal strength relative to a (if I remember correctly) 2.5 KHz
bandwidth at the receiving location. As an example, if your local noise
level is 10 dB higher than most other locations (easily possible), your
transmit reports as measured at the other end are going to be 10 dB
better than the receive reports you tell the other station. Your local
noise could be higher due to many possible factors ... local industrial
activity, a neighbor with an older plasma TV, somebody nearby using a
welder, poor quality LED lights, a noisy internet router, etc.
The same thing might be causing your first problem if your local noise
level isn't consistent, which it probably isn't. It is possible that
sometimes you simply don't hear the other station's reply. In your
example, you wouldn't know if the other station had already sent R-02
previously if your noise level had popped up briefly and covered it up.
WSJT-X doesn't tell you how many times the other station had sent the
same report. You say it only happens rarely, so maybe the fact that
doing something else fixes the problem is simply coincidence based upon
small sample size.
Obviously I cannot say for certain ... I am just trying to offer helpful
speculation. But a higher than typical noise level at your location ...
for any reason ... could produce similar symptoms.
I have the opposite "problem". The noise level at my QTH is very low,
so I often give better reports than I receive and I often hear (read)
transmissions from other stations who can't hear me even though I have
good antennas and live on a steep hillside. For the same signal
strength each direction a station I can consistently read at -22 or -24
will usually not be able to decode me.
Best regards,
Dave AB7E
On 8/14/2019 5:23 AM, Steinar Fremme via wsjt-devel wrote:
Hello all!
Sorry if this issue has ben taken up before, but after looking into
old messages - I don’t find any
I have used WSJT-X on my Mac now for 6 months and logged more than
5000 FT8 entries in my logbook by it.
But there is one thing I’m not able to find out why happening .
When a station is calling me - I do reply by ex. Foo bar -14 for
example 5 times - and nothing happens - I just click CQ again and the
first message is a reply from the calling station by R-02
It seems to me that the decoding is somewhat stuck - and when I just
do something - calling a new CQ - or answering another station - then
it decodes the first one - straight away
I can also just change my frequency a little - one down and one up
again - just do something
It dos not happen often 0-5 times a day - and just hitting CQ works
every time ?
I find it happens more often now in the v2.1.0 than in the older
versions , but as it could go days between this is happening - its not
so easy to find a red tread in this
I’m using v2.1.0 from my IC-7851 into my iMac 4.2GHz Intel Core i7
This iMac is dedicated for this use and except for MacLoggerDX - there
is no other prowesses / programs running.
I’m also a little concerned by the receiving “sensibility” - as I see
from pskreporter that I’m heard by 10+ times as many as I can receive.
I do decode down to -22 -24 , but when I get the report - I always
have a better TX report than I can give at my RX report.
And yes - I’m only running 100W (sometimes 200W)
And yes - it could be the antenna, but I have the same TX/RX
differences on all my 3 antennas - 160m loop, vertical and 2-3 element
beam
Have measured the RX of the radio - and it's up to spec - so its not
the radio
So what makes the ability to receive and decode - Antenna - radio - and ?
Regards
Steinar Fremme
___
E-mail: stei...@fremme.at <mailto:stei...@fremme.at>
Phone: +436649263301
Skype: stfremme
Web: https://1250rt.com
Ham: OE4KSF
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