Private Line Glossary

Advantage Port Expandability - Allows an authorized dealer to add an Advantage Board to upgrade radio functionality.

Auto Range Transponder System™ - (ARTS™) - Permits two radios operating on the same frequency to monitor each others range in pre-programmed intervals.

Battery Back-Up Tone - When the battery revert kit is installed, this heads-up alert notifies users during conversations that they're using the back-up battery supply.

Battery Saver - Extends the life of the battery while in use. This feature puts the radio into "sleep" mode during usage. The rest periods are only a micro second in duration, but even micro seconds add up.

Busy Channel Lock-Out - Disallows transmissions over occupied, "busy" frequencies. It also keeps users from monitoring people with different PL or DPL codes.

Courtesy Beep - Signifies when a person is through talking.

CWID - International Morse Code is used to automatically send out the station ID periodically to identify the owner of the transmitting base station/repeater. This satisfies the requirements of the FCC.

DTMF ANI - Automatic number identification (ANI) transmits an individual ID code with every press, or release of the PTT Identifies a specific user to the dispatcher or the CAD.

DTMF Selective Call - Selective calling mutes receive audio for all transmissions not intended for a specific unit. A unique user code is preprogrammed into each unit to open receiver audio after the correct code is received, eliminating all non-directed chatter on the air.

Encryption - Voice inversion encryption function scrambles audio rendering transmission unintelligible except by intended receiver.

Lithium Ion (Li-Ion) - These batteries do not suffer from the “memory effect” at all (see below). These batteries have twice the energy of Nickel Metal Hydride, even though they weigh 33% less. This is especially nice for portable items, such as laptops and camcorders.

Local/Distance - Radio service software (RSS) easily allows the choice for a Local rather than a Distance setting if you desire the 10dB interference protection that this mode provides. Programmable radio wide or to an option button.

Memory Effect - If a battery is repeatedly only partially discharged before recharging, the battery will “forget” that it can further discharge. Nickel-Cadmium batteries are particularly prone to this problem. The best way to prevent this situation is to fully charge and discharge your battery on a regular basis.

MIL-STD 810 C,D,E - Designed and tested to meet the U.S. military standards approval for Shock, Vibration, Rain & Dust, ensuring it's ability to perform in rigorous work environments.

Nickel Cadmium (Ni-Cd) - The most popular type of rechargeable battery, although it tends to suffer from “memory effect” (see above). It has a high rate of energy discharge, meaning that it is low maintenance with high performance. Nickel Cadmium can deliver constant power until nearly all of the battery has been used.

Nickel Metal Hydride (Ni-NH) - The most advanced commercial rechargeable battery. Nickel Metal Hydride batteries last 40% longer than Nickel Cadmium batteries. This battery is generally much more environmentally friendly than Nickel Cadmium, as well.

P25 - A communications protocol sanctioned by APCO 911 establishing a standard for digital radio to enable interoperability between public works and public safety entities.

PL/DPL - (CTCSS/DCS) Private Line or Digital Private Line. Lets the user receive only the calls accompanied by the radio's code and to place calls only to those that accept the code. This helps eliminate disruptive conversations of others who may be sharing radio frequencies.

Relay Delay - Keeps the repeater transmitter keyed a short time after a radio user releases the PTT switch. This allows a user group to conduct a normal conversation without delays from re-activating the repeater. This "polite pause" can be set from 0-7 seconds.

Repeater/Talkaround - You may utilize a repeater to increase range for your radio's signal or to provide telephone interconnect. Talkaround frequencies do just that - they circumvent the repeater to talk directly to another radio.

Time Out Timer - A timer that when exceeded will shut off the radio's transmit feature. Since most transmissions average 3-4 seconds in duration, a longer single transmission usually indicates an inadvertent keying accident (someone's radio is wedged between the seats and the PTT is jammed on) draining battery life. Or, there's a lengthy conversation going on that needs to be curtailed. The bottom line is, this reduces the chances of annoying busy channels, annoying chatter and annoying dead batteries.

Transmit Battery Saver - Monitors signal strength of last received signal, then selects the next lower TX output power level to conserve battery life.

X-PAND - XPAND is available on Motorola's new 12.5/25 kHz switchable radios. XPAND is Motorola's technology to compress your voice at transmission and expand it at the receiver and simultaneously reducing extraneous noise. XPAND will improve audio quality especially when the radio is in the 12.5 kHz mode.