[Elecraft] KX-3 TX current draw?

[John Oppenheimer]

Additional comments:

Same test at 7MHz results with about 1A current. Suggesting KX3 power
amplifier efficiency difference between 7 and 50 MHz.

Using same DL1, added Elecraft W1 and MS utility to measure SWR. At 50
MHz KX3 displays SWR = 1.5 whereas W1 indicates SWR = 1.1:1.

May I suggest W1 closer to instrument grade measurement than KX3
internal SWR measurement.

John KN5L

On 5/9/20 8:34 AM, John Oppenheimer wrote:
> Hi Drew,
> 
> 50 MHz TX constant 4 W carrier:
> 
> KX3 #1658
> KX3 PS 13.2 during XMIT
> ATU bypass
> Elecraft DL1
> KX3 SWR 1.5
> Current = 2.3A