Ummmm ...assuming the 55mW is a typo and it really should be 55 mA, that sounds like the receive-only drain? 5 watts out at 14VDC input is 357 mA at 100% efficiency. My K2 draws about 1.5A at 12.5VDC with power set at 5W. That's about 26% overall efficiency. I'd expect something "similar" for the K1 since when transmitting the majority of the loss is in the PA's and driver. My K2 draws around 180mA in receive-only but then the K2 has a lot more receive circuitry than a K1.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

On 12/19/2013 1:08 PM, "Hjalmar Duklæt" wrote:
According to the manual the K1 will deliver around 5W at 14V (varies
between bands), and the current draw is around 55mW (without display
backlight). It can be operated on a voltage between 8.5 - 15V.

Hal/la4xx

On 13-12-19, "[email protected]"  <[email protected]> wrote:

Good folk,

In the planning stages for this year's field day which I plan to
run QRP from a battery.

At 12 vdc, how much power will the K-1 deliver? What is the current
draw at 12 vdc.


At 13.8 vdc, how much current does the K-1 draw to deliver 5 watts
out?

How low can the voltage be and still have the unit produce a stable
output?

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