DE
DANIELS
ELECTRONICS
VT-3A130 VHF AM Transmitter Instruction Manual
1-3
Duty Cycle:
100%; Continuous operation from -30°C to +60°C. (- 40°C
Optional)
Spurious and Harmonic Emissions:
More than 90 dB below carrier
Key-On/Key-off Spectral Mask
Transients are at least 80 dBc below for frequencies
±400 kHz from carrier.
Input VSWR:
2.8:1 Maximum.
Load VSWR tolerance:
Z load = 20:1:
Modulation:
6K00A3 Amplitude Modulation
Transmitted Noise
More than 45 dBc below carrier
Operating Temperature Range:
-30˚C to +60˚C, optional - 40˚C temperature test.
Operating Humidity:
95% Relative Humidity (Non-condensing) at
+25°C
Operating Voltage:
+13.8Vdc Nominal (range +10 Vdc to +17 Vdc)
Active Current:
+13.8 Vdc supply less than 1.5 A at Pout = 4 Watts
Channel Selection:
In 25kHz (8.333 kHz) increments selected by two front
panel buttons. Preset capability for 15 channels selectable
through external control.
Frequency Stability:
Standard: ±1ppm -30°C to +60°C (optional -40˚C)
Standby Current (9.5Vdc) and Rise time:
Typ. 20 mA/30ms MODE 1
(Also see Transmitter
Typ. 17 mA/50ms MODE 2
Main Board Specification)
FCC Type Approval:
TBA
DOC Type Approval:
TBA
Front Panel Control:
One 3 position switch
• NORM (repeat mode)
• OFF
• KEY TX
PTT Activation:
• Active to ground with time-out timer
• Active to ground without time-out timer
• Microphone activated without time-out timer
• Front Panel switch (KEYED) without time-out
timer, (NORM) with or without time-out-timer.
PTT Time-Out-Timer:
Selectable 1 seconds to 8 hours. (factory set 5min)
