2INSTALLATION AND CONNECTIONS2-5Required Connections to a Transceiver[ANT2] 144/430MHz BANDSCONNECTOR (p. 2-2)Connect a 50 Ω antenna for the144/430 MHz frequency bands or74.8 MHz and above.IC-7100[ANT1] HF, 50/70 MHz BANDSCONNECTOR (p. 2-3)Connect a 50 Ω antenna for theHF, 50/70 MHz frequency bands orbelow 74.8 MHz.[DC 13.8V]DC POWER SUPPLY (p. 2-7)Use a powersupply with13.8 V DCoutput and acapacity of atleast 22 Am-peres.PS-126(Optional)[MIC] MODULAR MICRO-PHONE CONNECTOR (p. 2-4)As with a microphone connec-tor of the controller, acceptsthe supplied microphone.[GND] GROUND TERMINAL(p. 2-2)Connect this termi-nal to a station orvehicle ground toprevent electricalshocks, TVI, BCIand other problems.STRAIGHT KEY JACKPlug diameter: 3.5 mm/1⁄8˝Accepts a straight key or anexternal electronic keyer.Connect to the [MAIN UNIT]connector of the Controller.(p. 2-4)