The function of the RF-601A/CU is to match the impedance of a 15, 25, 28, or 35 foot (4.57, 7. 62, 8. 53, or 10.67 m) whip antenna to a 50-ohm transmission line, at any frequency in the 2.0 to 30.0 MHz range. When operating in a compatible radio transmitting system, control signals from the associated antenna coupler control unit automatically tune the RF-601A/CU matching network in less than five seconds. During manual and silent operation, tuning is accomplished by the operator with the controls mounted on the antenna coupler control unit. A low power (not to exceed 200 watts) CW signal is required for tuning. Once tuned, the RF-601A/CU is capable of handling 1 kW of PEP and average power.

Looks like RF-601A.
8 in stock