Term | Definition |
|
|
PC Board | Printed Circuit Board. Also referred to as a PCB. |
PL | |
| along with the carrier. |
Programming Cable | A cable that allows the CPS to communicate directly with the radio using |
| RS232. |
Receiver | Electronic device that amplifies RF signals. A receiver separates the audio |
| signal from the RF carrier, amplifies it, and converts it back to the original |
| sound waves. |
Repeater | Remote transmit/receive facility that |
| improve communications range and coverage (conventional operation). |
RF | Radio Frequency: The portion of the electromagnetic spectrum between audio |
| sound and infrared light (approximately 10 kHz to 10 GHz). |
RX | Receive. |
Signal | An electrically transmitted electromagnetic wave. |
Spectrum | Frequency range within which radiation has specific characteristics. |
Squelch | Muting of audio circuits when received signal levels fall below a |
| value. With carrier squelch, all channel activity that exceeds the radio’s preset |
| squelch level can be heard. |
TOT | |
TPL | Tone Private Line |
Transceiver | |
| signals. Also abbreviated as XCVR. |
Transmitter | Electronic equipment that generates and amplifies an RF carrier signal, |
| modulates the signal, and then radiates it into space. |
TX | Transmit. |
UHF | |
USB | Universal Serial Bus: An external bus standard that supports data transfer rates |
| of 12 Mbps. |
VIP | Vehicle Interface Port. |
February 21, 2007 |
|