[Elecraft] KX-1 power output varies

[Don Wilhelm]

Michael,

The KX1 does not have a power control loop as the K1 (or K2, K3, KX3) 
have, so its power output is highly dependent on the voltage. Those with 
power control loops measure the output power and report it to the MCU 
which will adjust the drive to attempt to produce the requested power.  
If the voltage is low, it will just take more current to produce the 
requested power output.  The KX3 is a bit different in that it switches 
output impedances at lower voltages (and reduces the power) to remain 
more efficient.

73,
Don W3FPR

On 8/27/2012 8:19 PM, Michael Babineau wrote:
> It is also worth noting that the power output of the KX1 is quite sensitive to
> DC voltage in. If you can give it 12v the power output should be closer to
> 3 to 4 watts.  It is much more sensitive to this than my K1.
>
>