KX3 Power cable

Posted by Dave Sublette-2 on Jan 31, 2018; 2:49pm
URL: http://elecraft.85.s1.nabble.com/KX3-Power-cable-tp7637906.html

Good morning,

I am using the standard power cable that is supplied with the KX3.  Using a
digital multi meter and the built in voltage monitoring capability of the
KX3, it looks like the supply voltage is dropped by 0.5 volts in the power
cord when transmitting with 5 watts  According to the built in monitor, the
KX3 is pulling 1.6 amps from my gel cell.

The gel cell voltage drops also, but I compensated for that when I
calculated the .5 volt drop in the power cord.

It seems to me that a larger gauge wire is called for in the power cord.

Also, I can't get the KX3 to transmit more than 5 watts.  If I turn the
power up to 10 watts, it transmits at that level briefly, then turns the
power down to 5 watts.  It must be some voltage sensing circuit that does
it.  The supply voltage is showing 11.4 VDC when keyed..

So what about the gauge of wire for the power cord?  Do you think we need a
larger sized wire?

73,

Dave, K4TO
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