51XX series of radios:

242-5MFK-ABC-xxD

M (Model)
1 - 5100 series
2 - 51SL series
5 - Ascend series

F (Frequency Band)
1 - VHF (136-174 MHz)
2 - UHF (380-450 MHz) Federal Users Only
3 - UHF (403-470 MHz)
4 - UHF (450-512 MHz)
7 - 700-800 MHz
8 - 800 MHz
9 - 900 MHz

K (Keypad)
2 - Standard, Limited keypad (51xx/52xx only)
3 - Standard, DTMF keypad (51xx/52xx only)
4 - Standard, Limited keypad (55xx only)
5 - Standard, DTMF keypad (55xx only)
6 - Intrin Safe, Limited keypad (all models)
7 - Intrin Safe, DTMF keypad (all models)

A (Antenna)
0 - No antenna
1 - VHF 136-151 MHz
2 - VHF 151-162 MHz
3 - VHF 162-174 MHz
4 - UHF 403-520 MHz
6 - VHF 136-174 MHz
8 - 800 MHz

B (Battery)
0 - No battery
1 - Ultra high capacity, NiMH
2 - Clamshell for alkaline batteries
6 - Intrin Safe, ultra high cap NiMH

C (Front Housing Color)
0 - Black
1 - Yellow
2 - Orange
xx - Software enabled features/options
These “xx” letters indicate other operating protocols
and options that are enabled by factory
programming. Options may include encryption,
OTAR, 512 Talk Groups, Digital SMARTNET/
SmartZone, AES encryption, and others. Use the
Transfer > Read Options From Radio menu


53xx series of radios:
The radio model number is located on the radio
identification label attached to the bottom cover (see
Figure 1-1). The following is a breakdown of this
number:

242-5MFT-SEC-OADE

M (Model)
3 - 5300 Series
4 - 53SL Series
5 - Ascend Series

F (Frequency Band)
1 - VHF (136-174 MHz)
2 - VHF HB (146-174 MHz)
3 - UHF (403-470 MHz)
4 - UHF (450-512 MHz) Not available
6 - UHF (380-470 MHz)
7 - 762-806 and 806-870 MHz
8 - 800-870 MHz

T (Type)
0 - Motorcycle
3 - Medium Power (40W UHF), Dash Mount
4 - Medium Power (40W UHF,) Remote Mount
5 - High Power (100W VHF), Dash Mount
6 - High Power (100W VHF), Remote Mount
7 - Standard Power, Dash Mount
8 - Standard Power, Remote Mount
9 - Standard Power, Dash Mount Public Works

S (Signaling, Primary)
2 - P25 Conv. Analog/Digital
4 - Special
8 - Analog Mode Only

E (Encryption Type)
0 - No encryption
5 - DES/DES-OFB (SEM*)
6 - DES/DES-XL/DES-OFB (UCM only*)
7 - DES/DES-OFB/AES (SEM*)
8 - DES/DES-XL/DES-OFB/AES (UCM only*)
(* See Sections 1.11 and 1.12.2 for more information.)

C (Configuration)
1 - Six button standard control unit
4 - Dual Controls (Front + Remote)
5 - Handheld Control Unit (HHC)
6 - Dual Remote (Two Rem Ctrl Units)
7 - Transit Bus System
8 - Motorcycle (rotary on-off)
9 - Modified logic, B+ on J5, -280 cable

O (Options
A - Std cable, no installed options (-230)
D - + Data/Accessory cable (-282)
S - + Siren cable (-231)
U - + UI cable (-245)
R - + Remote/Accessory cable (-249)
T - + Dual remote cable (-283)
C - + 2nd control hd cable (-251)

A (Analog or Additional Signaling)
A - No additional signaling
B - P25 and SN/SZ trunking analog/digital
C - SMARTNET trunking
E - SMARTNET/SmartZone trunking

D (Data Options)
A - No data
B - P25 Conventional Mobile Data
C - P25 Trunked/Conv Mobile Data*
D - Zone Fail, No Data
F - Zone Fail, Conventional Data
G - Zone Fail, Trunking Data

E (Encryption and Security Software)
B - Default (non-OTAR)
C - OTAR P25 conventional and trunked
D - Same as “C” above