Elecraft

K-1 power out vs current draw.

Classic

List

Threaded

3 messages Options

k3hx@juno.com

K-1 power out vs current draw.

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?

If there is a chart which shows this kind of voltage vs power out data, I'd
be grateful for the link.

72,

Tim

____________________________________________________________
Do THIS before eating carbs (every time)
1 EASY tip to increase fat-burning, lower blood sugar & decrease fat storage
http://thirdpartyoffers.juno.com/TGL3131/52b3454ae5d045492d71st02duc
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

"Hjalmar Duklæt"

Re: K-1 power out vs current draw.

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, "[hidden email]" <[hidden email]> 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?
>
> If there is a chart which shows this kind of voltage vs power out data, I'd
> be grateful for the link.
>
> 72,
>
> Tim
>
>
> ____________________________________________________________
> Do THIS before eating carbs (every time)
> 1 EASY tip to increase fat-burning, lower blood sugar & decrease fat storage
> http://thirdpartyoffers.juno.com/TGL3131/52b3454ae5d045492d71st02duc
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <[hidden email]>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

k6dgw

Re: K-1 power out vs current draw.

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, "[hidden email]" <[hidden email]> 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?