Mine does this on several bands......






On Mon Aug  8 12:42 , "Robert Garceau"  sent:

>No problem on 10 meters on my #165 KPA500
>W1EQ, Bob
>
>
>-----Original Message-----
>From: [email protected]
>[[email protected]] On Behalf Of Klaus Koppendorfer
>Sent: Monday, August 08, 2011 2:38 PM
>To: Robert Redmon; [email protected]
>Subject: Re: [Elecraft] KPA500 10 meter behavior
>
>yes kpa-500 serial 230 has exactly the same behavior
>
>________________________________________
>Von: [email protected]
>[[email protected]]" im Auftrag von "Robert Redmon
>[[email protected]]
>Gesendet: Montag, 08. August 2011 19:16
>Bis: [email protected]
>Betreff: [Elecraft] KPA500 10 meter behavior
>
>I put my KPA500 on 10 today for the first time and noticed a rather
>unexpected behavior. Often, on the first character of transmission, the
>K3 drive power apparently spikes, driving the KPA500 to more than 700
>watts. This seems to stabilize following that first dit or two, but I
>have to reduce drive to below 12 w before that behavior stops. Seems the
>100 watt module in the K3 is behaving poorly. Anyone else noticed this?
>Doesn't seem to be a problem on other bands. (SWR is 1.3:1).
>
>73,
>
>Bob K5SM
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