Radio Transmitter

RADIO TRANSMITTER
AM/SSB/FM/REMOTE
CONTROL)
TRAINING PROGRAM:
• Low frequency processor (low pass filter, level matcher,
tone generator for testing)
• Modulation techniques for the following transmissions:
- AM
- DSB (Double Side Band, with balanced modulator)
- SSB (LSB and USB, using quartz filter)
- FM (VCO using varicap diode)
- Of logic states (coder for 4-channel radiocontrol)
• Local oscillator
• Conversion mixer
• RF amplifier
• Radio (antenna)/cable transmission
• Calibration and measurement of all stages and the
whole module
• Troubleshooting
• System test and measurement
TECHNICAL SPECIFICATION:
• AM/DSB/FM/radiocontrol channel in MW band
• SSB channel in 80 m SW band (3-4 MHz)
• 2-tone generator: 1000 and 2000 Hz
• Adj. input for external microphone and BF signal
• Coder: 9 input line (4 Data and 5 Address)
• 2 Local oscillators: manual frequency control
(DC voltage) or automatic (PLL)
• 2 LED’s for PLL locking and 5 LED’s for selected modulation
• IF/RF testing point: low impedance (50 Ohm) for spectrum
analyzer connection
• RF output power: 40mW, adjustable
• Tuned ferrite antenna in MW band
• RF output impedance: 50 Ohm (BNC, antenna or cable)
• Fault simulation: Possibility to insert 10 faults
• Test and interconnection points, Ø 2 mm
• Rapid modifi cations to circuits using jumpers
• 37-pin connector to the fault insertion unit
• 8-wire connector to the power supply unit
Printed circuit board with protective treatment and mimic
diagram
• Module equipped with ABS protection on its lower side