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NMBP and Two Way Radios

Icom Radio

Please note: Effective immediately, the NMBP's radio call sign will be WQIU529

General Radio Terms That You Might Find Helpful To Know

Channel: The general term for frequency, or it signifies a preset frequency on a multi-channel radio.

CTCSS: Continuous Tone-Controlled Squelch System. This is a privacy feature which enables only other radios with the same CTCSS (as well as the same frequency) to communicate with each other. If you program the units for CTCSS and another individual has a radio programmed to the NMBP frequency (which is legal, as it is a shared frequency), they would not hear your conversation, nor would you be able to hear theirs. If all NMBP radios were to use a standard CTCSS 107.2, patrollers would be able to communicate with each other without hearing unrelated radio conversations. Another advantage to CTCSS is that the radio will not be constantly passing white noise or static (a.k.a. non squelch) through the speaker. The radio will be completely silent until another member on your frequency and CTCSS transmits.

Frequency: The number of times a wave repeats itself in a second.

Repeater: Is a radio device typically located at a remote, elevated location, such as a tower or tall building top. The function of this device is to receive a radio signal from somewhere on the ground (within it's range) and retransmit the signal back out with more power, thus enabling radio users who are not close enough to communicate directly with each other to communicate over greater distances. Although the use of a repeater is desirable, the monthly cost for this service is most likely out of reach for most patrols (repeater cost run between $200 - $1000 per month).

UHF: Ultra High Frequency. Typically 400 MHz to 500 MHz in the two-way radio industry.

VHF: Very High Frequency. Typically 150 MHz to 160 MHz in the two-way radio industry.

Watts: Radio output or transmit power is measured in Watts. The more watts a radio puts out, the further the signal will travel. But as the power output increases, so does the battery consumption. Think of watts as horsepower.