Codan Radio Communications UT-4-400 Manuel D’Utilisation
DE
DANIELS
ELECTRONICS
UT-4R400 UHF Project 25 Digital Transmitter Instruction Manual
1-3
Front Panel Controls:
NORM (repeat mode), OFF, and KEY TX (Tx on).
MIC MODE: ANALOG and DIGITAL.
MIC MODE: ANALOG and DIGITAL.
PTT Activation:
• Active to ground; Microphone activated;
• Front Panel switch:
• Front Panel switch:
KEY TX
PTT Time-Out-Timer:
Programmable from 1 sec. to 8 hrs. (default 5 min.), using
Radio Programming Software package.
Radio Programming Software package.
Channel Spacing:
12.5 kHz or 25 kHz.
Frequency Stability:
Standard: ±2.5 ppm, -30°C to +60°C. Optional: -40C to +
60C.
60C.
Channel Selection:
In 5.0 or 6.25 kHz increments selected with Radio
Programming Software package.
Programming Software package.
Standby Current :
100 mA;
DOC Type Approval:
TBA
FCC Type Acceptance:
TBA
1.5.2
Audio Specifications
Audio Input:
Unbalanced, 600 or 4750 ohm selectable input impedance.
Audio Response:
Pre-emphasis (6 dB per octave); +0.5 to -2.0 dB from 300 Hz
to 3 kHz
to 3 kHz
Audio Deviation Limiting:
+/- 2.5 kHz, +/- 5.0 kHz
Audio Distortion:
Less than 3% THD; 1 kHz tone at 1.5 kHz or 3 kHz deviation
Hum and Noise:
-45 dB typical