Frequency range
         Type 1
         Type 2

         136-174 MHz

         450-490 MHz
         470-512 MHz

Number of Channels

Channel Spacing
Wide
Narrow

25 KHz, 30 KHz
12.5 KHz 15 KHz
(PLL step: 5/6/25/7.5 KHz)

25 KHz
12.5 KHz
(Pll step: 5/6.25 KHz)

Battery Voltage

7.5 VDC +- 20%

Operating Temp range

-22deg F to +140deg F(-30deg C to +60deg C)

Battery life
(5-5-90 duty cycle

10 hours at 5 W

10 hours at 4 W

Frequency stability
(-22 F to +140 F)

+-0.0002%

Antenna impedance

50 ohms

Channel Frequency spread
Type 1
Type 2

38 MHz

40 MHz
42 MHz

Dimensions (WxHxD)
(projections not included)
(with keypad model)

2-5/16 x 6-3/32 x 1-1/2 in (58 x 155 x 38 mm)
2-5/16 x 6-3/32 x 1-9/16 in (58 x 155 x 39.5 mm)

FCC ID
Type 1
Type 2 

ALH21893110

ALH21903110
ALH219031

FCC compliance
Type 1
Type 2 

FCC parts 22,74,80,90

FCC parts 22,74,90,95
FCC part 90

IC certification
Type 1
Type 3 

282 195 3ISA

282 195 341A
282 195 5393 

Sensitivity
12 dB SINAD
20 dB Quieting 

0.25 uV
0.35 uV 

Selectivity
Wide
Narrow 

-75 dB
-70 dB 

-73 dB 
-68 dB 

Intermodulation distortion
Wide
Narrow 

-75 dB
-68 dB 

-73 dB
-65 dB 

Spurious response

-75 dB

-73 dB

Audio output

500 mW with less than 3% distortion

RF power output
HI 
LO 

5W
1W 

4W
1W

Spurious reponse

-70 dB

Modulation
Wide
Narrow 

16K0F3E 
11K0F3E 

FM noise
Wide
Narrow 

-45 dB
-40 dB