11512OTHER FUNCTIONS12345678910111213141516171819 Time-out timerTo prevent accidental prolonged transmission, etc., the trans-ceiver has a time-out timer. This timer cuts a transmissionOFF after 1, 3, 5 or 10 min. of continuous transmission. Thistimer can be cancelled (default).Approx. 10 sec. before the time-out timer is activated, thetransceiver emits a beep tone as a warning.This can be selected with “TOT” in set mode. (p. 90) PTT lockTo prevent accidental transmission, etc., the transceiver has aPTT lock function.This can be selected with “PTT LOCK” in set mode. (p. 90) [MIC/SP] jacksTo connect external equipment such as speaker, microphone,TNC, etc. refer to the diagram below.The center terminal of [MIC] outputs 3.3 V DC via 330 Ωresistor.Externalspeakerthe [SP] jackSPSPGND3.5 (d) mmplugthe [MIC] jack33 kΩ330 ΩMICMICGNDExternalmicrophone2.5 (d) mmplugPTT3.3 V (See below)Impedance 8 ΩImpedance 2 kΩMIC3.0 VMIC GNDINTERNAL SPSP (AF OUT)CLONESP GNDMENU screen ➪ SET MODE ➪ PTT LOCK(Push [MENU/LOCK]) (Rotate [DIAL]†, then push [ï](5)†.)MENU screen ➪ SET MODE ➪ TOT(Push [MENU/LOCK]) (Rotate [DIAL]†, then push [ï](5)†.)†[DIAL] ↔ [∫∫](2)/[√√](8) [ï](5) ↔ [≈≈](6)