Yaesu FT-1900R Operating Manual

Also see for FT-1900R: Technical supplement

63FT-1900R OPERATING MANUALTIME -O UT T IMER (TOT)The “Time-Out Timer” (TOT) feature is designed to force the transceiver into the “receive”mode after a preset time period of continuous transmission (the default is 3 minutes). Thisfeature prevents your transceiver from transmitting a “dead carrier” for a long period oftime in the event that the microphone PTT switch is accidentally locked in the “TX” condi-tion.The Time-Out Timer’s “switch-to-receive” time may be adjusted to 1/3/5/10 minutes, orOff.To change the default (3 minutes) time setting:1. Press and hold in the [MHz(SET)] key for one second, thenrotate the DIAL knob to select “53 TOT.”2. Press the [MHz(SET)] key, then rotate the DIAL knob toselect the desired interval (1/3/5/10 minutes), or OFF.3. Press and hold in the [MHz(SET)] key for one second to save the new setting and exitto normal operation.When your transmission time is within 10 seconds of the Time-Out Timer expira-tion, an Alert bell will provide an audible warning from the speaker.AUTOMATIC P OWER -O FF (APO)The “Automatic Power-Off” (APO) feature will turn the radio completely off after a user-defined period of PTT or key/button inactivity. If you do not press any front panel keys orbuttons, rotate the DIAL knob, use the microphone’s keys and buttons, or transmit, and solong as the transceiver is not scanning or engaged in priority monitoring, the radio will shutitself off after the specified time period. The available selections for the time before power-off are 0.5/1/3/5/8 hours, as well as APO Off. This feature is useful in minimizing batterydrain in a mobile installation if you forget to turn the transceiver off when you leave yourvehicle.To activate the APO feature:1. Press and hold in the [MHz(SET)] key for one second, thenrotate the DIAL knob to select “1 APO.”2. Press the [MHz(SET)] key, then rotate the DIAL knob toselect the desired “switch-off” time or OFF.3. Press and hold in the [MHz(SET)] key for one second to save the new setting and exitto normal operation.If there is no action by you within the time interval programmed, an Alert bell will providean audible warning from the speaker within 1 minute of the APO Timer expiration, then themicroprocessor will shut down the radio automatically.MISCELLANEOUS S ETTINGS