Good Evening,
It has been a chilly week. Rain slacked off occasionally, there
were a few minutes of sun. I heard a persistent sound yesterday. Then
it made sense, they are harvesting Christmas trees with a helicopter.
With the price of trees, it is cost effective to move them to the
Hi Julie,
A unun is an auto-transformer, not a choke. It is a matching device.
Does your antenna include a counterpoise? It should -- it's a critical
half of of an end-fed antenna, carrying return current. Without it,
return current flows on whatever wiring is connected to your rig, and
The problem occurs when the counterpoise doesn't provide a low impedance
path for RF. If the problem occurs on a specific band, then try a
counterpoise that is about 1/4 wavelength long on that band. You can add
one in addition to the existing counterpoise, if that one is working
properly on
Make a choke with RG-316 - small size and can handle quite a lot of power.
Bert VE3NR
On 2021-11-20 13:09, Julia Tuttle wrote:
Hi folks,
I was tinkering with a whip + counterpoise antenna connected to my KX3 by a
short stretch of coax with BNC connectors a couple nights ago, and
discovered
I use a large ferrite clamp-on to isolate my short whip/counterpoise from my
KX2. Needed tor running digital modes. The large variety will hold 3 turns of
RG-58 which seems to be enough for what I need. IIRC I got them from ProAudio
Engineering. GL
73,
Brian, K0DTJ
> On Nov 20, 2021, at
Hi folks,
I was tinkering with a whip + counterpoise antenna connected to my KX3 by a
short stretch of coax with BNC connectors a couple nights ago, and
discovered (painfully) that there was quite a bit of RF coming back along
the ground when I bumped the outside of the antenna connector. I know
Dick,
Sorry to hear you are having issues, and I know this does not fix your
current issue, but as an aside, I always do a save of system config just
before any critical operations like contests, etc. Makes the recovery a
lot simpler, if needed.
73, and thanks,
Dave (NK7Z)
I had a similar failure several years ago. Don helped me troubleshoot that
little board and the problem turned out to be a few diodes that got blown
due to a lightning strike. I was glad it took out the diodes and not the
K2.
I do not use a KUSB converter with the K2 as I have 'real' RS232
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