- TRANSMITTER TIME OUT TIMER INFORMATION
		- Transmitter Time Introduction
		- Transmitter Time out Timer Programming Notes
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Transmitter time introduction:

This is an explanation of the Syntor X transmitter time out timer.

For each mode in the radio there is transmitter time out information programmed into the EEPROM. The transmitter time out is a timer that starts running whenever the Push To Talk (PTT) on the microphone is pressed. When the PTT is released the timer is reset. If this timer times out (i.e. if it is set for 1 minute and the PTT is held down without interruption for longer than 1 minute) the following will occur. First the transmitter will be turned off and cease transmitting. Second a loud audio tone will be heard in the radio's speaker (remember, when you are transmitting the speaker is usually quite). As soon as you release the PTT, the audio tone will stop and the timer will reset. If you want to, you can simply press the PTT to begin transmitting again and the timer will also start over again.

This time out timer programs in 15 second intervals from 15 seconds to 7 minutes 45 seconds. It may also be turned completely off.

The timer is a useful feature of the Syntor X radio:

• HAM radio operators can set the timer to 2 minutes 45 seconds for modes that have repeater frequencies. Unattended / remote controlled, HAM repeaters are required to have a 3 minute (or shorter) timer. If you exceed the repeater timer limit, the repeater will stop transmitting, but you will not be able to hear this because you are transmitting, not receiving. By combining good operating practices with the radio's timer (set to a time out that is shorter than the repeater time out) you will never "talk the repeater off the air".
• There is always a chance the PTT will be pressed accidentally (i.e. the microphone could accidentally become wedged between the seats and activate the PTT). This accidental broadcast and invasion of your own privacy can be REALLY embarrassing. If the radio's time out timer is used, chances are good that the damage will be limited and you will quickly find out what was happening. Without the timer who knows how long it may go on and how much damage/embarrassment you can do. For this reason a transmitter time out time is recommended for all modes, even ones with simplex frequencies.
• Emergency services (Police, Fire, Ambulance, etc.) can use their radio frequencies for messages that lives depend on. The transmitter time out timer helps them keep the frequency clear of long winded operators and stuck microphone PTTs. These services typically set their timers to one minute.

Remember, even if the timer times out, you have the option of releasing the PTT and pressing it again to continue transmitting. So even short timer settings are not a real problem, but they can become annoying if set too short.

Transmitter time out timer programming notes:

The Syntor X EEPROM bit map must be programmed for the desired transmitter time out. Each mode must be individually programmed. This discussion will be for a single mode (the other modes program the same way).

• Byte 8, bits 3 through 7 (5 bits total) has the transmitter time out value. Pick a code that corresponds to the time out you want to use. As far as I have been able to determine the "infinite" setting never times out so this corresponds to turning the timer off.
• If a "receive only mode" is programmed the transmitter time out programming is ignored. If you press the PTT on a "receive only mode" the transmitter will not transmit and the same loud audio tone will be heard in the radio's speaker.

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