http://elecraft.85.s1.nabble.com/KPA500-Peculiar-behavior-no-power-output-on-Operate-tp7564452p7564678.html
That has been my suspicion since the KPA500FT arrived. I wait till the
> My theory on the "Peculiar behavior" issue:
> I have seen this problem several times before and finally decided it's an
> issue of interrupted "handshaking" between the K3 and KPA500. Seems that
> all communicating digital devices go through and introduction to confirm
> communication before they get down to business.
> My solution is to power on the K3,
> -wait till the banner has cleared and then hit the KPA500 front panel ON
> button.
> -Wait till the "KPA500 On" banner has cleared and then switch from Standby
> to Operate.
>
> When I have taken the few extra seconds to all the handshaking to
> complete, I don't recall ever seeing a failure of the KPA500 to deliver
> full power.
>
> God Bless & 73!Jack - WE5ST
>
>
> ________________________________
> From: W5RDW <
[hidden email]>
> To:
[hidden email]
> Sent: Saturday, October 27, 2012 12:06 PM
> Subject: Re: [Elecraft] [KPA500] Peculiar behavior : no power output on
> Operate
>
> Update........
>
> I just turned on the K3/KPA500/P3 as usual (KPA500 is OPER, not Standby)
> and
> listened to the band for awhile. I heard a strong station calling on 12
> meters SSB from Scotland and gave him a call and noticed only the K3 was
> putting out power (probably 20 or so watts, the low drive I usually use to
> drive the KPA500). He answered me and I then came back to him on the OVER,
> but now, the K3/KPA500 was putting out 400-450 watts as normal
> --
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