User's Manual

1-3
All model variations are provided with 28 Volt back lighting unless a specific request is made for 5 Volt AC
operation. NV (Night Vision) compatible option is only available with green display.
1.4 TECHNICAL CHARACTERISTICS
Specification
Characteristic
Model Designation: TDFM-600/6000
Physical Dimensions: Approx. 8" X 3" X 5.75"
Weight: 4.2 lbs. (1.9 kg)
Operating Temperature Range: -30°C to +60°C
Power Requirement:
Voltage: 28.0 Vdc, ± 15%
Current: 350mA minimum / 5A maximum
Audio Output Power (including sidetone): 500 mW into 600 ohms
Microphone Inputs: Carbon or Equivalent
Panel Back Lighting:
Voltage: 28 VDC or 5VAC
(specified when ordered)
Current: 100mA max. @28VDC
400mA max. @5VAC
Type I Modules
RF Output Power: 1 or 5 Watts (VHF)
1 or 4 Watts (UHF)
1 or 3 Watts (800)
Frequency Range - VHF Module: 136 to 178 MHz
UHF LO Module: 403 to 470 MHz
UHF HI Module: 450 to 512 MHz
800 Module: 806 to 870 MHz
No. of channels per band: 255 pre-programmable channels
Transmitter section VHF UHF 800
FM Hum and noise in dB (wideband): -48 -45 -45
Frequency Stability in ppm: ±2.0 ±2.0 ±1.5
Audio Distortion (at 1000Hz): <2% <2% <2%
Modulation Limiting: Wide band ±5kHz
Narrow band ±2.5kHz