[Elecraft] KX3 power reverts from 10W back to 5W

Don Wilhelm w3fpr at embarqmail.com
Fri Aug 30 14:52:28 EDT 2013


Arno,

Also check the connections to the fuse in your power cord.  You *DO* 
have it fused do you not?
A fuse near the battery is essential to prevent a shower of molten metal 
if there is any fault in the wire or the connected equipment. Any 
battery stores a LOT of energy.
The automotive blade type fuses are the best for lower resistance 
connections.

73,
Don W3FPR

On 8/30/2013 2:45 PM, Arno Dienhart wrote:
> Hi Don,
>
> You (and Matt) might have a point with the power connection. I connect to
> the battery poles (which have the shape of blades) with copper clips, which
> are of rather thin copper sheet, so the contact surface is perhaps too small
> and too "loose". I will build a better connection next.
>
> My 259 connectors are well tight, so I don't expect any improvement there
> using pliers. However, should the battery connection improvement not yield
> the desired result, I will look at the 259s (of which I have four in the
> feedlines/balun string, plus two female-to-male adapters). Contingency tests
> have not shown any issues, though. But that was just an Ohm meter with 3V
> running through.
>
> 73,
> Arno K7RNO
>



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