User's Manual

1-1
SECTION 1
GENERAL DESCRIPTION
1.1 INTRODUCTION
This publication provides operating and installation information on the TDFM-600/6000 airborne transceiver. (The
exact model number depends on which and how many RF modules are installed.)
1.2 DESCRIPTION
The TDFM-600/6000 series of transceivers are airborne multiband radios capable of conventional FM, P25, SmartNet
and SMART ZONE trunking systems. RF modules are available in VHF, UHFLO, UHFHI and 800 MHz bands. The
bands are numbered 1,4,5 and 8 respectively.
The following are typical model examples:
TDFM-655 - Two UHF high band modules
TDFM-688 - Two 800 MHz modules
TDFM-6148 - One VHF, UHF low and 800 MHz module
TDFM-6158 - One VHF, UHF high and 800 MHz module
1.3 TECHNICAL CHARACTERISTICS
Specification Characteristic
Model Designation: TDFM-600/6000
Physical Dimensions: Approx. 8" X 3" X 5.75"
Weight: 3 Lbs (1.2 kg)
Operating Temperature Range: -30°C to +60°C
Power Requirement:
Voltage: 28.0 Vdc, ± 15%
Current: 165mA minimum
5A maximum
RF Output Power: 1 or 6 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
Audio Output Power (including sidetone): 500 mW into 600 ohms
Microphone Inputs: Carbon or Equivalent
Panel Back Lighting: 28 VDC or 5VAC
(specified when ordered)