[Elecraft] Alternative AMP to KX3 since Elecraft has temporarily stopped making AMPS

[John Harper]

The HR-50 has been an awesome performer here. It has the advantage of
having a carrier-operated relay if you choose to enable it to work with QRP
rigs without a PTT output. For KX2/KX3, 100% QSK:

http://ae5x.blogspot.com/2018/12/thoughts-on-hardrock-50.html

73,

John AE5X