User's Guide

P25 Digital VHF Transmitter Instruction Manual
IM21-001
General Information
3
PTT Activation: • Active to ground; Microphone activated;
• Front Panel switch: KEY TX
PTT Time-Out-Timer: Programmable from 1 sec. to 8 hrs or infi nity. (Default 5 min.),
using Radio Service Software package.
Standby Current:
Transmitter with no Standby ≤ 75 mA
encryption modules installed
Transmitter with encryption Standby ≤ 105 mA
modules installed
DOC Type Approval: TBA
FCC Type Acceptance: TBA
Audio Specifi cations
Audio Input: Balanced, 600Ω or optional unbalanced input
(600 Ω or 15000Ω selectable input impedance)
Audio Response: Pre-emphasis (6 dB per octave); +1 to -3 dB
from 300 Hz to 3 kHz
Audio Deviation Limiting: +/- 2.5 kHz, +/- 5.0 kHz
Audio Distortion: < 3% THD; 1 kHz tone at 1.5 kHz or 3 kHz deviation
Hum and Noise: -34 dB typical