[Elecraft] power issues

[Richard Fjeld]

I find where the voltage drop is much like checking the drop across a 
resistor in circuit.  ie. use a volt-meter across each end of the 
segment under test. (The volt-meter is parallel to the segment being 
tested)   It may be just a poor connection, or not.

Dick, n0ce


On 2/4/2017 6:17 PM, George Thornton wrote:
> I did some checking today on my voltage to the K3 using two different routes.
>
> I am using an Astron RS-35m power supply.  It was tuned up to output slightly under 14v.  Normally it mediates through a PG40s backup and switching device, connected to three 140AH backup batteries as well as the power supply.
>
> When I connect the K3 power through the PG40S distribution panel I read 13.3 volts at the K3.  This drops significantly when I transmit, going down to under 12 volts.
>
> I then direct-wired the K3 lead to the Astron using ten gauge wire and a relatively short lead.  Power at the K3 then reads 13.8 and drops only to 13.7 during transmit.
>
> Since I had failures attributed to erratic power supply, my conclusion is the K3 should only be run via a short, large gauge lead direct to a power supply in good order.
>
>
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