My QMX was delivered the other day but I have not been having a very
good time with it so far. I am really hoping it is because I am just
dumb!
It came shipped with the 1_00_019 firmware. I put 11.7v into it and
when I press the CW paddle all I get is a 'S' next to the frequency.
After upgrading to 1_00_020 and reading the manual it seems that this is
due to high SWR (which is set in the configuration to not Tx above 3)
I have a little antenna (not great sure) but when I measure the SWR
on my nanoVNA it shows about 1.2 on thye 20m band but when I move the
antenna over to the QMX the swr is read at almost 5 resulting in nothing
being transmitted. .
I have even tried connecting a putty terminal to the QMX and then
sweeping the SWR (and let me tell you this is not always a simple
exercise - the sweep often hangs at 75% and then you can only reboot the
QMX and reconnect)
What I see on the terminal when it does work is the following:
Looks like a good dip at I am guessing 14Mhz
One last thing I have tried is to look at the terminal "Hardware Tests" as you can see in Hans'
Hans Hardware Test (After he has pressed the "T" key)
When I press the "T" key to tune Hans gets Power and SWR readings
however I my Voltage goes to 9.8V (in Red) and 0.0W power with no SWR as
you can see below:
My Hardware Test (After he has pressed the "T" key)
Sadly I have lost my Dummy Load so I cannot test it into that.
But ... Why is it so different from my NanoVNA? I am reluctant to
turn off the Protection however I am not sure what else to do at this
point. Any Ideas?
IU1SWR