[Elecraft] Mobile high power

[Bert Craig]

I run approx. 200 watts from my mobile. It's been trouble free over the last four or five years. To the best of my knowledge, no adverse effects on other vehicles either. I do use LMR-240uf throughout and employ numerous snap-on ferrites as well as a full toroidal RF choke between the output of the amp and the antenna. Also, all units are grounded directly to the vehicle chassis and bonded to each other. So far, so good.

Vy 73 de Bert
WA2SI

-----Original Message-----
From: Charlie T <pincon at erols.com>
To: elecraft at mailman.qth.net
Sent: Mon, 06 May 2019 11:24
Subject: [Elecraft] Mobile high power

Has anyone considered the liability of running very high power mobile?
What if you're running a KW, and gave a call on 20M.  Suddenly,  the guys
brakes in the vehicle next to you locked up causing a multiple vehicle
crash?
I realize this is an extremely hypothetical and unlikely case, but these
smart vehicle computer systems can't be all THAT immune to all sorts of RFI.

I know the cruise control my 2000 Dakota would mysteriously jump 5 MPH if I
keyed up with only 25 watts on 222MHz. 
It would return to it's previous setting when I un-keyed.   VERY
disconcerting eh?

73, Charlie k3ICH



This begs the question: Why KX3s with KPA500s? That is what I use in my
mobile station and it provides about 250W due to the FCC amplifier gain
requirements. I am fine with it, as that is what I have and higher power may
affect the vehicle. I have seen someone post a modification to remove an
attenuator in the amp and recalibrate the power meter, but I would assume
that Elecraft will not be allowed to do that, as the FCC Cert holder.

73,

Mark
W7MLG
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