53SL ES Series Mobile Radio Operating Manual April 2009
1-5
Licensing
Section 1 - Radio Overview
Currently, the only operating mode that is standard with all models is the conventional
analog mode. Other variables such as frequency range are hardware dependent instead of
software dependent.
1.4.1
Upgrading a Radio with Additional Options
Radios in the field may be upgraded with new features. A new feature can be purchased
and a special encrypted code string keyed to the Electronic Serial Number (ESN) of the
radio is then provided by EFJohnson Technologies. This string is in the form of a
computer file which enables this feature, and is downloaded to the radio using PC
Configure.
1.4.2
Using PC Configure to Determine Options
To determine what software options have been enabled in a particular radio, use the PC
Configure™ programming software to read and display what options are installed.
1.5
Licensing
This radio operates on radio spectrum frequencies assigned and licensed by the Federal
Communications Commission (FCC). The FCC can penalize anyone operating an
unlicensed radio. It is the radio operator’s responsibility to obtain the necessary license for
this radio equipment.
1.6
Radio Accessories
Various accessories are available from EFJohnson that will provide added capability and
enhanced operation for this radio. The following describes some of the accessories
available.
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