[Elecraft] KPA500 10 meter behavior

[Robert Garceau]

No problem on 10 meters on my #165 KPA500
W1EQ, Bob


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Klaus Koppendorfer
Sent: Monday, August 08, 2011 2:38 PM
To: Robert Redmon; elecraft at mailman.qth.net
Subject: Re: [Elecraft] KPA500 10 meter behavior

yes kpa-500 serial 230 has exactly the same behavior

________________________________________
Von: elecraft-bounces at mailman.qth.net
[elecraft-bounces at mailman.qth.net]" im Auftrag von "Robert Redmon
[k5sm.bob at gmail.com]
Gesendet: Montag, 08. August 2011 19:16
Bis: elecraft at mailman.qth.net
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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