- New
The MFJ-909 Mobile Antenna C-Matching unit, Matches HF mobile antennas (ham sticks, screwdrivers, etc.) 10-80 Meters by adding C (capacitance) from the feed point to ground to form L-network with antenna. 11 values of switchable capacitance. 30 pf - 2000 pf. Handles 600 Watts. SO-239 connectors. Connect the antenna to the plug labeled OUT and connect the transmitter to the plug labeled IN. The cable from your antenna to the MFJ-909 needs to be as short as possible. Keep it under two feet. Also, keep the MFJ-909 out of the weather; either in the truck or in the cab of you vehicle. There are mounting holes provided.