53SL ES Series Mobile Radio Operating Manual April 2009
1-7
Radio Accessories
Section 1 - Radio Overview
The control includes a display, DTMF keypad, volume and power controls, option
switches, junction box, and an internal microphone. It does not have an internal speaker. A
separate external speaker is required when the control unit is used with a remotely
mounted radio.
When the control is used with a remotely mounted radio, a Junction Box (Part No. 023-
5300-130) must be used. This Junction Box provides various connections for the control
and an external speaker, along with connections for programming and rekeying the remote
radio.
1.6.3
Base Station Unit
A Base Unit power supply is available that can be used to power the 53SL ES radio from
110 volt AC line voltage. This lets the 53SL ES be used in a field office, base station, or
headquarters building.
Figure 1.4
53SL ES Mobile Radio mounted in Base Station
Consult with your EFJohnson representative for additional accessories that can be used
with your EFJohnson mobile radio.