User's Guide

Duty cycle Continuous operation up to +55°C
Relative humidity:
Operating 95% at 55°C MIL STD 810C
Storage 85% at 40°C MIL STD 810C
Salt fog Complies with MIL STD 810C
Vibration and shock:
Shock 40 g, 6 ms
Vibration 10 to 500 Hz MIL STD 810C
EMC To MIL STD 461/462D part 4
TRANSMITTER
RF Characteristics
5 The characteristics of the transmitter’s RF output are:
Carrier power output 40 W AM; 60 W FM. FM power is automatically
reduced to 40 watts when a serviceable PAE 3640
power amplifier is connected to a UHF transmitter or
transceiver.
±0.5 dB over operating band
±1 dB over temperature range
0 to 10 dB front panel adjustment
Power reduction Output power is automatically reduced under the
following conditions:
❏
when VSWR exceeds 2.5:1 (gradual reduction to
-10 dB at infinite VSWR)
❏
when dc supply falls below 26 V (1 dB nominal
reduction)
❏
when the temperature exceeds 80°C (6 dB
reduction)
❏
when the temperature exceeds 90°C (9 dB
reduction)
Permissible mismatch Infinite VSWR
Harmonic outputs Better than -70 dBc (-60 dBc between 225 and
230 MHz)
3000DV2 Radios Section 2
Page 3