[Elecraft] K3 power supply fuses

Matt Zilmer mzilmer at roadrunner.com
Mon Mar 16 16:47:20 EDT 2015


Hi John,

The KX3's KXPA100 amplifier's power cable has two inline fuses in
waterproof enclosures, one for each of the supply cables.  They take
standard automotive fuses, and they're very robust.  If you bought (or
scrounged) a KXPA100 power supply cable, it would work well since it
has APPs on one end, already crimped on.

I've never had the problem you mentioned with the KXPA100's fuses.

Anyway, just an idea.

73,
matt W6NIA

On Mon, 16 Mar 2015 16:12:05 -0400, you wrote:

>My K3 is powered from a car battery as I am always /P. I have installed fast-blow fuses rated at 25 A in each of the supply lines.
>
>Operating at 80W RTTY this afternoon, I noted that I was getting a low voltage warning before I would have expected it. On examining the power cable, I found the fuse holders to be warm to the touch. I expect that is what was causing the voltage drop.
>
>However, may I ask what specific (make , model) of fuse holders are you using to protect your k3?
>
>73
>John, KK4OYJ
>
>
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Matt Zilmer, W6NIA
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