[Elecraft] KX3 2 meter module transmit problems?

[Edward R Cole]

One thing you could check is whether the metal shield cover on the 2M 
module was installed in the correct position.  I had reduced output 
on 2m (0.3w vs 3.0w) when I re-installed my module after receiving it 
back from Elecraft (after getting some mods and repairs to my field 
tester unit).

I mistakenly installed the cover backwards so the edge of the cover 
came into contact with the TO-220 RF output transistor 
leads.  Reversing the cover so the cutout notch was in position over 
the transistor leads "fixed" my low output.  If the module cover 
makes a hard short across transistor leads, that could result in the 
dimming display and other issues you are seeing?  The cutout in the 
lip of the cover is very small so one could overlook it.

73, Ed - KL7UW
--------------------
From: <ejkkjh at gmail.com>

KX3 2 meter module transmit problems, not sure what to try next?
When I key mic in 2 meters, display dims and KX3 beeps twice, no 
output, red led lights.  When I push xmit button KX3 locks up, only 
way to recover is turn off power supply?
Receive works great, no problems at all.
HF works fine, full output on transmit.
I switched out everything from SMA antenna connector, different 
cables, 3 different 2 meter antennas.  Only cables connected to KX3, 
mic, power supply, and antenna.
Tried different power supply.  I have had trouble with the internal 2 
meter antenna, mini coax cables, but checked them, they look ok and 
connected.  This just happened when I tried to use it for VHF contest 
yesterday, 2 meter transmit was ok before this.
Any help would be appreciated.  73  Thanks
Emory  WM3M



73, Ed - KL7UW
http://www.kl7uw.com
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