Yaesu FT-7900R Operating Manual

Also see for FT-7900R: Technical supplement

18 FT-7900R OPERATING MANUALThe optional MH-42B6JS is similar to the MH-48 A6J, but the MH-42B6JS does not includea DTMF keypad and its illumination switch.PTT SwitchPress this switch to transmit, and release it to receive.. [ACC]/[P]/[P1]/[P2] Buttons[ACC] button:This button replicates the functions of thefront panel [BAND(SET)] key.While operating on the VFO mode, press this but-ton momentarily to toggle the operating band as fol-lows:144 MHz Æ 250 MHz Æ 350 MHz Æ430 MHz Æ 850 MHz Æ 144 MHz ......In the Memory mode, press this button momentarily toactivate the “Memory Tune” function.Press and hold in this key for 1/2 second to enter the Set(“Menu”) mode.[P] button:This button replicates the functions of the front panel [V/M(MW)] key.Press this button momentarily to switch the frequency control among the VFO,Memory System, and Home channel.Press and hold in this button for 1/2 second to transfer the VFO contents into aMemory register.[P1] button:This button replicates the functions of the front panel [TONE(REV)] key.Press this button momentarily to change the Tone Squelch mode: ENC (CTCSSEncoder), ENC.DEC (CTCSS Tone Squelch), or DCS (DCS) operation.Press and hold in this key for 1/2 second to reverse the transmit and receive fre-quencies during split-frequency (i.e. “Repeater”) operation.[P2] button:This button replicates the functions of the front panel [LOW(ACC)] key.Press this button momentarily to select the transmitter power output level (“LOW”,“MID2”, “MID1”, or “HIGH”).Press and hold in this key for 1/2 second to recall the Weather Broadcast Channels.You can program the [ACC], [P], [P1], and [P2] buttons for other functions, if desired.See page 62 for details.MH-42B6JS M ICROPHONE