MFJ-919,BALUN, CURRENT, 4:1, 1.8-30 MHz, 1.5kW Electronic Keyer The ATR-20 is the little

The ATR-20 is the little brother of the Ameritron ATR-30 True Legal Limit antenna tuner

built-in earphone jack

This device is an acoustic receiver tuned to the ultrasonic range of 40 KHz allowing you to hear the ultrasonic noise generated by the corona discharge and arcing connections that generate the power line static on your radio

month/date display

It is automatic band switching

MFJ-919,BALUN, CURRENT, 4:1, 1.8-30 MHz, 1.5kW Electronic Keyer The ATR-20 is the littleThe MFJ 919 is a 1500 Watt true current baluns antenna center insulators that transforms 200 ohms to 50 ohms. Transmission Line Transformer construction using 100 ohm characteristic impedance transmission line gives flat 160 10 Meter response. Large low permeability ferrite cores easily handle full power. SO 239, stainless steel hardware with direct 14 gauge stranded copper wire connection to antenna. Heavy duty weather housing. Measures 3 x 3 x 2