[Elecraft] KX3 Amp

Edward R Cole kl7uw at acsalaska.net
Fri Mar 22 13:01:43 EDT 2013


I believe the Elecraft gang are hard at work on the KXPA100 for the 
KX3 (kinda think it will be ready for Dayton -?).  This amp will work 
with any 5-10w radio, including the K3/10.

I build one of the CCI kits; the EB27A which provides 270w on 20m 
with 12w from either the KX3 or K3.  I have used it several times 
checking into the Elecraft SSB Net.
http://www.kl7uw.com/HF-300PA.htm

I am starting on the AN762 kit (5w/140w) and will have it at Dayton, 
if anyone is interested.

73, Ed - KL7UW


Date: Fri, 22 Mar 2013 13:35:22 +0100
From: Brian Lodahl OZ2BRN <oz2brn at post.cybercity.dk>
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KX3 Amp
Message-ID: <514C500A.1020508 at post.cybercity.dk>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi Giff K1GAH,

I am in progress of building my own amp according to the Motorola EB-104
application note;

www.ab4oj.com/dl/eb104.pdf

5-10W in, about 600W out depending on your DC supply, all-transistor-amp
using four MRF-150 power FET's. Remember to add a low-pass filter after
the amp.

Communication Concepts in OH sells parts and bits for this construction,
in case you want to hit the ground running.

http://www.communication-concepts.com/index.php/amplifiers/eb104.html

I cannot tell you about the performance yet since I am still weeks from
the first smoke test, hi-hi.

73'
Brian OZ2BRN
Kx3 # 1118, K2/100 # 6936



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