Specifications (for GP338 Plus/GP338 XLS) 5C-3
3.0 Specifications (for GP338 
Plus/GP338 XLS)
General
Transmitter
Receiver
All specifications are subject to change without notice.
UHF
Frequency: 450-527 MHz
Channel Capacity: GP338 Plus 128 Chan-
nels/GP338 XLS 160 
Channels
Power Supply: 7.5 Volts ±20%
Dimensions
   with Standard 
High  Capacity 
 
Lithium Battery:
   with Ultra High 
Capacity Lithium 
Battery:
101.5mm x 55.5mm x 
33.0mm
101.5mm x 55.5mm x 
38.0mm
Weight:
   with Standard 
High Capacity 
 
Lithium Battery:
   with Ultra High 
Capacity Lithium 
Battery:
265 g
285 g
Average Battery 
Life @ (5-5-90 Duty 
Cycle)
   Standard High 
Capacity Lithium 
Battery:
   Ultra High Capac-
ity Lithium Battery:
Low  
Power
>10 hrs
>14 hrs
High  
Power
>7 hrs
>10 hrs
Sealing: Meets MIL-STD-810-
C,D & E and IPX4
Shock: Meets MIL-STD-810-
C,D & E and TIA/EIA 603
Vibration: Meets MIL-STD-810-
C,D & E and TIA/EIA 603
Dust: Meets MIL-STD-810-
C,D & E and IP5X
Humidity: Meets MIL-STD-810-
C,D & E and TIA/EIA 603
FCC ID AZ489FT4845
UHF
RF Output
Li Ion @ 7.5V:
Low
1W
High
4W
Frequency 450-527 MHz
Channel Spacing 12.5/20/25 kHz
Freq. Stability
(-30°C to +60°C)
0.00025%
Spurs/Harmonics: -36 dBm < 1 GHz 
-30 dBm > 1 GHz
Audio Response:
(from 6 dB/oct. Pre-
Emphasis, 300 to 
3000Hz)
+1, -3 dB
Audio Distortion:
@ 1000 Hz, 60%
Rated Max. Dev.
<5%
FM Noise: -40 dB
UHF 
12.5kHz
UHF 20/
25kHz
Frequency: 450-
527MHz
450-
527MHz
Sensitivity
12dB EIA SINAD:
0.35 µV 0.35 µV
Adjacent Channel 
Selectivity ETS
-60 dB -70 dB
Intermodulation 
ETS
-65 dB -65 dB
Freq. Stability
(-30°C to +60°C):
0.00025% 0.00025%
Spur Rejection: -70 dB -70 dB
Image Rejection: -70 dB -70 dB
Audio Output
@ <5% Distortion
500 mW 500 mW