COLLINS ATS-1 Antenna Tuner - VERY RARE!
(Okay, okay, I admit it; it's not really Collins ....
I built it to match my Collins station. The "meatball" is real!)

"Transmatch-circuit" tuner built into a KWM-2 cabinet

The two coaxial relays allow the tuner to be by-passed with a
front panel switch. The RCA connector is for external relay power.

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