[Elecraft] KPA500 - No RF Amplification in Operate on 20M (WU6R - Mark)

[Bob McGraw K4TAX]

I trust you have the configuration set as displayed on page 5, Figure 1 
of the KAT500 manual.  And that you have the K3S configured so as to 
have the VFO tracking set to ON.  See page 60 of the K3S manual under 
KAT3.   Select 1 to set to KAT500Y.

I would also suggest that in AUTO mode you allow the KAT500 to resolve a 
match on your 20M frequency and antenna.   Otherwise, set the KAT500 to 
MAN mode which will automatically select stored matched values.  This is 
the preferred operating mode after one "trains" the KAT500 for various 
frequencies and antennas.

FYI - I have the same station configuration plus the P3.

73

Bob, K4TAX



On 12/9/2018 12:35 PM, Mark Wheeler via Elecraft wrote:
> I was operating on 40M today with my ~2 month old KPA500/KAT500 combo 
> and as the 40M band faded, I switched over to 20M.  Operating the 
> KPA500 in "Operate" mode and the KAT500 in "Auto" with no KPA or KAT 
> faults (confirmed by front panels and KPA500/KAT500 utilities), with 
> 15w dialed in at the K3S, I am only getting 6.77W out of the KPA500.  
> While operating on 40M, I was getting 475W out with 15W in.  This 
> would be my first time to operate on 20M with the KPA500/KAT500 so I 
> imagine I've got a setting I need to change...  Any thoughts or help 
> is greatly appreciated.  Thank you in advance...  (I really love my 
> K3S/KPA500/KAT500 combo!)
>
> 73,
> Mark
> WU6R
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