[Elecraft] Why we recommend 8 volts minimum for the KX1

[Wayne Burdick]

Hi Gil,

You may occasionally operate your KX1 with a mismatched load or a poor ground.
This can result in higher transmit current and/or reduced noise immunity due to
high RF voltages on the chassis. Running from batteries that have a nominal
voltage above 8 volts will provide a safety margin at such times. 

We've actually tested the KX1 down to 6.5 volts operating into 50 ohms, but a
perfecly-matched load is rare during field operation. 

A set of six 1.5-volt lithium camera batteries will last a *very* long time in
the KX1, and they have a flat discharge curve. I strongly recommend them, even
though they're about twice as expensive as alkalines. 
 
73,
Wayne
N6KR 


Gil Stacy wrote:
> 
> I note on page 62 on the manual that "You can connect any 7-14
> VDC....although you should use the minimum recommended voltage (8V) when
> possible."  Why is 8 V recommended?
> 
> 73/Gil NN4CW
> K2 #3104
> KX-1 #54

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