[Elecraft] KX3 and KPA-500

[Dick Dievendorff]

The KPA500 provides between 12 to 14 dB gain depending on the amp and the
band.  

FCC rule 97.317(a)(2) limits the gain of FCC-certified commercially sold
amplifiers for the amateur market to 15 dB of gain.

My KPA500 has about 12 dB of gain on 20 meters and about 13.5 dB of gain on
10 meters.

At 12 dB, on 20 meters, my amp requires 31 watts of K3 exciter power to
deliver 500 watts out.

As it's (pretty close to) a linear amplifier, you can scale the input and
output power linearly from that.
3.1 watts should deliver 50 watts.
6.2 watts should deliver 100 watts.
10 watts should deliver about 160 watts.

The KXPA100 has similar gain, up to its 100 watt specified maximum.

73 de Dick, K6KR

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of George Rebong
Sent: Thursday, November 28, 2013 12:34 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] KX3 and KPA-500

I would like to try this combination and wonder how many watts will I get
out in the KPA-500.
Happy Thanks Giving

73
George

Sent from my iPad 3G
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