[Elecraft] K-1 power out vs current draw.

[Fred Jensen]

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, "k3hx at juno.com"  <k3hx at juno.com> 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?