Motorola GR300 service manual Carrier Only Repeat Open Repeater

Section 6

Programming

The ZR310 will reference the system ID user for the proper TPL/DPL encode and the Morse ID to send. You can use a disabled or enabled user number.

The Morse code station ID is sent after a 0.75 second key up delay.

Carrier Only Repeat (Open Repeater)

You can program the ZR310 to repeat based on just the carrier, sometimes called "carrier controlled repeat", or "open repeater". In this mode, the ZR310 provides simultaneous tone/open repeater operation for users that have TPL or DPL encode or that have no encode repeat. Both types of users operate normally. This allows a mix of TPL tone users with open repeat capability and is ideal when adding tone users to an existing open repeater.

To enable the carrier (CSQ) for repeat, you can identify a user number as the "carrier repeat user". This allows all standard user- programmable features for open repeat, including enable/disable, TPL or DPL code encoding, etc for the carrier user, if the CSQ user number is set to "0", no carrier repeat will be available.

Accessory PTT TPL/DPL encode

An accessory device such as a tone remote or local microphone may key the transmit radio, and take over control of the repeater. The accessory may need the ZR310 to encode a particular TPL tone or DPL code in order to communicate with a specific user group. The ZR310 incudes a programmable " Accessory PTT encode" settings to accomplish this function. When an accessory keys the transmit radio, the ZR310 will disable the repeater transmit hold time until 30 seconds of no accessory transmit has expired.

Anti-Kerchunker Timer

The anti-kerchunker timer may be programmed between 0 (off) and 5.0 seconds.

The first transmission from a user must be longer than the anti-kerchunker timer value or the programmed transmit hold time will not be used. This discourages users from "kerchunking" the repeater.

Timeout Timer

The timeout timer is a "stuck mic" timeout feature. Its setting determines the maximum amount of time a mobile may transmit on the channel. Each time the TPL/DPL decode stops, the timer is reset. It may be set from 1 to 9 minutes, in one minute increments, and the default setting is 3 minutes. During a timeout condition, you will hear an alert tone before the transmit radio unkeys.

March, 1993 6880902Z68-O Section 6-9