Codan Radio Communications VT-3-150-SN User Manual

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Transmitter Main Board Instruction Manual

Audio Input:

Balanced 600 ohm or unbalanced (optional).
Input level sensitivity, -25 dBm to 0 dBm.

Audio Response:

Pre-emphasis (6 dB per octave); +0.5 to -2.0 dB
from 300 Hz to 3 kHz;

Flat Audio Response:

+1 to -1 dB from 100 Hz to 3 kHz.

Audio Deviation:

Preset to ±1.5 kHz (Narrow Band) or ±3.0 kHz (Wide Band)
with a 1 kHz tone (capable ±2.5 kHz or ±5.0 kHz).

Subtone Audio Input 1:

0.5 Vpp at 200 Hz for ±500 Hz deviation
(internally adjustable).

Subtone Audio Input 1 Frequency range:

60 Hz to 300 Hz.

Subtone Audio Input 2:

0.5 Vpp at 100 Hz for ±500 Hz deviation
(internally adjustable).

Subtone Audio Input 2 Frequency range:

DC to 150 Hz.

Direct Modulation Input:

0.5 Vrms at 1 kHz or ±3 kHz deviation.

Direct Modulation Frequency range:

DC to 5 kHz.