53SL ES Series Mobile Radio Operating Manual April 2009
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E C T I O N
Section 1
Radio Overview
The EFJohnson 53SL ES Mobile Radio is designed specifically for critical land mobile
radio applications. Whether for police and fire first responders or public service and
government communications, the 53SL ES provides the features and capabilities for all
operating modes. Seamless interoperability with analog and digital, wideband and
narrowband, and a wide variety of trunking protocols – all available simultaneously in the
same radio.
Figure 1.1
53SL ES Mobile Radio
Depending on the specific model (and options), the 53SL ES mobile radio operates in the
VHF (136-174 MHz), UHF 380 (380-470 MHZ), UHF Low (403-470 MHz), UHF High
(450-512 MHz), and 700/800 (762-870 MHz) frequency range at 15-35 output watts
transmitter power. The 53SL ES uses the Enhanced (AMBE+2) P25 Vocoder for
outstanding voice quality and noise reduction.
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