[Elecraft] KX2 TX "Sticks On" in FT8?

[Jim Brown]

On 8/9/2019 8:47 AM, MaverickNH wrote:
> While I had quite a few Mix31 beads on antenna coax and the various other
> power, CAT and audio cables connecting my rig, it seems adding a few more
> helped. I think it was a ferrite bead on the special cable set that connects
> the KXPA100 and KX2 that did the trick. RF leaking in somehow!
Mix #31 is useful on the HF bands ONLY if multiple turns are wound 
through the core.  Only passing the cable through a bead is useful only 
on 2M. Study k9yc.com/RFI-Ham.pdf  and http://k9yc.com/2018Cookbook.pdf
> While my base shack is all bonded to my AC panel ground, I'm running
> "portable" with KX2/KPA100 on my deck and portable antennas in my back yard
> while we're renovating. So I don't have a good bonding/ground configuration.
> Virtually none!

Every chassis in an interconnected system must be bonded together, even 
if there is no connection to the earth.  How are you powering the 
KX2/KPA100?  Battery? AC power supply and extension cord?

What is your antenna?  Is it some form of end-fed wire, vertical or 
random orientation? If so, you need some form of counterpoise to carry 
the antenna's return current. If you don't provide one, return current 
will flow on the coax to the radio and the other equipment connected to 
it, where it can cause mischief. And you need a common mode choke at the 
feedpoint (the far end of the coax) as described in the two links above.

73, Jim K9YC

>
> BRET/N4SRN
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