Re: [Elecraft] KX3 Output power rating

[Wayne Burdick]

The latest firmware is required; it will allow you to use up to 15 W on 80-20 m 
(10 W elsewhere).

The upgraded heatsink is optional. On my lab KX3 I can put out 15 watts for 
several minutes before hitting the temperature limit, at which power is reduced 
by firmware.

73,
Wayne
N6KR


On May 27, 2016, at 10:16 AM, Alan Geller via Elecraft 
 wrote:

> The KX3 is now being positioned as the 15 watt big brother to the smaller KX2 
> “up to 10 watts” version. The upper
> limit on my KX3 power adjustment seems to have always been around 10.2 watts. 
> How does one safely achieve this
> 15 watt performance? Does it require the new/upgrade heatsink plus a new 
> firmware version? I have always used an
> approx. 14 Volt power source.
> 
> I’m sure this has been addressed before but I don’t see the history…thanks 
> for any observations.
> 
> alan/K6ADG
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Re: [Elecraft] KX3 Output power rating

[Ken Arck]

You really worried about 1.67 dB?


At 10:16 AM 5/27/2016, Alan Geller via Elecraft wrote:
The KX3 is now being positioned as the 15 watt 
big brother to the smaller KX2 “up to 10 
watts” version. The upper limit on my KX3 
power adjustment seems to have always been 
around 10.2 watts. How does one safely achieve 
this 15 watt performance? Does it require the 
new/upgrade heatsink plus a new firmware 
version? I have always used an approx. 14 Volt 
power source. I’m sure this has been addressed 
before but I don’t see the history…thanks foor 
any observations. alan/K6ADG 
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[Elecraft] KX3 Output power rating

[Alan Geller via Elecraft]

The KX3 is now being positioned as the 15 watt big brother to the smaller KX2 
“up to 10 watts” version. The upper
limit on my KX3 power adjustment seems to have always been around 10.2 watts. 
How does one safely achieve this
15 watt performance? Does it require the new/upgrade heatsink plus a new 
firmware version? I have always used an
approx. 14 Volt power source.

I’m sure this has been addressed before but I don’t see the history…thanks for 
any observations.

alan/K6ADG
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