Re: (K-3) with Yaesu FL-2100B Amplifier

[Russ Darling]

Aloha group. I have K-3 #4358 and am attempting to connect my Yaesu FL-2100B to the K-3. Any help on the ALC connection? Thanks in advance. Russ DarlingKH7SThe Big Island

        
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[Chuck - AE4CW]

No ALC connection is required between the K3 and the FL-2100B.  The power output on the K3 is more than stable enough for the 2100B.  And Elecraft discourages the use of ALC.  I ran this setup for over a year with no ALC related problems.

However, you will need an interface to key the amp from the K3 as the amp keying voltage is not compatible with the K3.  I used a simple 12V reed relay powered from the K3 12V RCA jack.

Chuck, AE4CW