[Elecraft] KX3 - SWR Display of "--"

[Don Wilhelm]

Stan,

That indication is "normal" when the power level is too low for a valid 
SWR computation.
The KX3 SWR indication is used below 10 watts, but the KXPA100 
indication is used above that level.
It should go away if you increase (or decrease) the power a bit.  It 
sounds as though you are operating right on that critical threshold.

73,
Don W3FPR

On 11/21/2014 11:06 AM, stan levandowski wrote:
>  I just got a KXPA100 yesterday.  It seems to work as specified except 
> that above 10 watts of power, the KX3 display randomly {like in "not 
> all the time"} shows two dashes instead of the SWR.
>
> I do not have the internal tuner option.  I am using my SGC237 
> autocoupler into a center fed Zepp.  My W2 wattmeter shows the proper 
> power output and the SWR  is usually 1:1 or very close.
>
> This does not occur at power levels at or below 10 watts which means 
> it's most likely not the KX3's problem but rather the amplifier's 
> behavior.