[Elecraft] K3 going expeditionary

[Jim Brown]

Yes, and this should definitely be twisted pair, contrary to what's on a 
highly regarded mobile site. Also, radio equipment in vehicles should 
NOT by bonded to the frame/chassis/vehicle metal.

OTOH, coax return for HF mobile antennas SHOULD be bonded to vehicle 
metal, because that's what serves as its counterpoise (often called a 
ground plane).

BTW -- a major obstacle to this being a good ground plane is that the 
metal parts of many (most?) vehicles are insulated from each other by 
paint. An ohmmeter study between parts of the chassis is a worthwhile 
effort.

73, Jim K9YC

On 8/24/2020 3:01 PM, Steve Hall wrote:
> I highly recommend you run a power lead to the battery (ideally) or the
> main power bus in the car interior rather than tap off the limited
> accessory socket.   Keep well under the fuse rating that feeds the
> accessory plug if you go that route.
> Steve WM6P
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