4 Watt Transmitter - 50 Ohm output
£175.00 + postage
Step up your broadcast game with the 4 Watt AM Radio Transmitter — a powerful, reliable solution for medium-range radio broadcasting. Whether you’re managing a community station, organizing drive-in events, or experimenting with hobby radio, this unit delivers the range and clarity you need. Expected range around 4 miles radius with good antenna. Look at our ATU section for a suitable unit.
SKILL LEVEL REQUIRED - EXPERT
4 Watt Unit
Size - 150mm wide, 150mm depth, 75mm high
Weight. - 1Kg
Power requirement - DC 24 V @ 1.5A max
Audio input and output
RCA Phono sockets, left and right audio between 75mV and 775mV RMS (Bluetooth optional)
Audio Bandwidth (- 3dB) - 70Hz to 6KHz
Modulation level – up to 100%
RF Output level – 4 to 5 Watts (dependant on Aerial Match)
RF Output Circuit - Class E
RF connection – SO239
Display
Signal level – 10 segment Bar-Graph multi-colour LED
Frequency – 4 7-segment LED display
Ventilation - Cooling fan forced airflow
Technical Comparison
1 Watt Unit - 50 Ohm Version
£155 + Postage
Size - 150mm wide, 150mm depth, 75mm high
Weight. - 0.9Kg
Power requirement - DC 12 V @ 900mA max
Audio input and output
RCA Phono sockets, left and right audio between 75mV and 775mV RMS
Audio Bandwidth ( - 3dB) - 70Hz to 6KHz
Modulation level – up to 100%
RF Output level – 1 to 1.5 Watt (dependant on Aerial Match)
RF Output Circuit - Class E
RF connection – SO239 socket
Expected range - 1 to 2 miles radius.
Display
Signal level - 10 segment Bar-Graph multi-colour LED
Frequency – 4 7-segment LED display Ventilation – passive convection
4 Watt Unit
£175 + Postage
Size - 150mm wide, 150mm depth, 75mm high
Weight. - 1Kg
Power requirement - DC 17 V @ 1A max
Audio input and output
RCA Phono sockets, left and right audio between 75mV and 775mV RMS (Bluetooth optional)
Audio Bandwidth (- 3dB) - 70Hz to 6KHz
Modulation level – up to 100%
RF Output level – 4 to 5 Watts (dependant on Aerial Match)
RF connection – SO239 socket
Expected range - 3 to 5 miles radius.
Display
Signal level – 10 segment Bar-Graph multi-colour LED
Frequency – 4 7-segment LED display
Ventilation - Cooling fan forced airflow
20 Watt RMS, 80 Watt PEP
£250 + Postage
Size - 220mm W, 240mm D, 80mm H
Weight - 1.5Kg
Power Requirements - 30V at 3A
Frequency 1540 - 1620KHz
Audio Inputs - RCA
RF Output - 20 W RMS
RF Connection - SO239
Modulation - Series Transistor circuit
Ventilation - Cooling fan Forced Airflow
SKILL LEVEL REQUIRED - EXPERT