7FT-90R OPERATING MANUALRear Panel ConnectionsÅ EXT SP JackThis 2-conductor, 3.5-mm mini phone jack provides receiver audio output foran optional external speaker. The audio impedance is 8Ω, and the level variesaccording to the setting of the front panel’s VOL control. Inserting a plug intothis jack disables audio from the transceiver’s internal speaker. This jack mayalso be used as a source of receiver audio during 1200 bps Packet operation.Ç 13.8 VDC Cable Pigtail w/FuseThis is the DC power supply connection for the transceiver.É ANTENNA ConnectorConnect a dual-band antenna’s 50Ω cable to this M-type (SO-239) coaxialconnector (European versions are equipped with a Type-N connector). Becertain to use the proper type of plug for connection of the coaxial cable.ÅÉÇ
