[Elecraft] AMERITRON ARB-704 Universal Amplifier Interface connected to K3s

[German Duran]

Hi friends, is anyone with experience working the Elecraft K3s with a
linear amplifier Kenwood TL-922 or with a linear amplifier Drake L4B?
Has anyone used the AMERITRON ARB-704 Universal Amplifier Interface to
connect the K3s to any of these linear amplifiers?
I appreciate any information about it. Sincerely:
German