HT1250 GENERAL SPECIFICATIONS
  Low Band VHF UHF

Channel Capacity

128

Power Supply

Rechargeable battery 7.5V

Dimensions:

With NiMH High Capacity Battery

5.40" x 2.26" x 1.50"
(137.0 x 57.5 x 37.5 mm)

With NiMH Ultra High Capacity Battery

5.40" x 2.26" x 1.60"
(137.0 x 57.5 x 40.0 mm)

With NiCd Battery

5.40" x 2.26" x 1.60"
(137.0 x 57.5 x 40.0 mm)

With Lilon Battery

5.40" x 2.26" x 1.30"
(137.0 x 57.5 x 33.0 mm)
Weight:

With NiMH High Capacity Battery

 15.0 oz. (420g)

With NiMH Ultra High Capacity Battery

 17.5 oz. (500g)

With NiCd Battery

 15.8 oz. (450g)

With Lilon Battery

 12.5 oz. (350g)
Average Battery Life @ 5/5/90 Duty Cycle: Low Power High Power

Low Power

High Power

With NiMH High Capacity Battery

 11 hrs 8 hrs 11 hrs 8 hrs

With NiMH Ultra High Capacity Battery

 14 hrs 11 hrs 14 hrs 11 hrs

With NiCd Battery

 12 hrs 8 hrs 12 hrs 9 hrs

With Lilon Battery

 11 hrs 7 hrs 11 hrs 8 hrs

 

TRANSMITTER

Specifications

 LowBand VHF UHF

Frequencies

29.7 - 42 MHz
35 - 50 MHz

136 - 174 MHz

403 - 470 MHz
Power Output 1 - 6 W 1 - 5 W 1 - 4 W
Frequency Stability
(-30° C to +60° C, +25° Ref.)

±10 ppm

±5 ppm @ 25 kHz
±2.5 ppm @ 12.5 kHz
Modulation Limiting + 5.0 @ 20 kHz ±2.5 @ 12.5 kHz/
± 4.0 @ 20 kHz/
+5.0 @ 25 kHz
Spurs/Harmonics

-36 dBm < 1 GHz
-30 dBm > 1 GHz
Channel Spacing

20/25 kHz

12.5/15/20/25/30 kHz
PLLstep: 2.5,3.125 kHz
FM Hum and Noise

-40 dB typical
Adjacent Channel Power

-60 dB @ 12.5, -70 dB @ 25 kHz
Audio Response (300 - 3000 Hz)

+1 to -3 dB
Audio Distortion

3%
FM Modulation 25 kHz
16KOF3E		 12.5 kHz
11KOF3E

25/30 kHz
16KOF3E

 12.5 kHz
11KOF3E

25 kHz
16KOF3E

 

RECEIVER

Specifications

 LowBand VHF UHF

Frequencies

29.7 - 42 MHz
35 - 50 MHz

136 - 174 MHz

403 - 470 MHz
Hum and Noise

-45 dB @ 20/25 kHz

-45 dB @ 12.5 kHz
-50 dB @ 25 kHz
Sensitivity (12 dB SINAD) EIA .30 µV .25 µV
Sensitivity (20 dB SINAD) ETS

.50 uV
Channel Spacing 20/25 kHz 12.5/15/20/25/30 kHz
PLLstep: 2.5,3.125 kHz
Intermodulation

70 dB
Adjacent Channel Selectivity 60 dB @ 12.5 kHz/
70 dB @ 25 kHz
Spurious Rejection 70 dB
Rated Audio 0.5 W
Audio Distortion @ Rated Audio 3% typical
Audio Response (300 - 3000 Hz) +1 to -3 dB
Conducted Spurious Emission FCC Part 15 -57 dBm < 1 GHz
-47 dBm > 1 GHz

 

ENVIRONMENTAL SPECIFICATIONS

Operating Temperature

-30 to +60° C

Storage Temperature

-55 to +85° C
Humidity 95% RH @ 8 Hr
ESD IEC 801-2 KV
Water Intrusion IP54

 

PORTABLE MILITARY STANDARDS 810 C, D & E
Applicable MIL-STD   810C 810D 810E
 

Methods

Procedures

Methods

Procedures

Methods

Procedures
Low Pressure 500.1 1 500.2 2 500.3 2
High Temperature  501.1 1,2 501.2 1,2 501.3 1,2
Low Temperature  502.1 2 502.2 1,2 502.3 1,2
Temperature Shock 503.1 1 503.2 1 503.3 1
Solar Radiation 505.1 1 505.2 1 505.3 1
Rain 506.1 1,2 506.2 1,2 506.3 1,2
Humidity 507.1 2 507.2 2,3 507.3 2,3
Salt Fog 509.1 1 509.2 1 509.3 1
Dust 510.1 1 510.2 1 510.3 1
Vibration 514.2 8, 10 514.3 1 514.4 1
Shock 516.2 1,2,5 516.3 1,4 516.4 1,4

 

FACTORY MUTUAL APPROVALS

Factory Mutual has given the HT1250 an intrinsically safe rating for use in Classes I, II, and III, Division 1, Groups C, D, E, F and G, as well as non-incendive use in Class I, Division 2, Groups A, B, C and D on models ordered with the Factory Mutual option
 

Measurements per EIA standards unless noted above. Specifications subject to change without notice or obligation.

 

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