250 Watts with a high performance well installed antenna is a typical set up for a local radio station for a big town or small city. In rural areas up to 40 miles range is possible. We've sold 100s of these over the last 20 years and we never see them returned they just keep going without need for repairs.
Our amplifiers have a uniform input requirement of 1W. In other words, when driven with 1W of power, this amplifier is capable of producing 250W of RF output continuously, while still adhering to global technical regulations.
Should you need a different input power level, there is no issue, as we can readily accommodate your request. Simply send us an email or message us using the box below.
This unit is designed with high reliability in mind. The cooling system incorporates one front 80mm fan to force cool the RF heatsinks and two 60 mm fans extracting from them. There is an additional 60mm fan to cool the power supplies. The amplifier is cool to touch by hand, even when we tested it in Spain, in summer, outside at ambient temperatures in excess of 40C. To maintain long term reliability the power amplifiers are fitted with two 150 watt Mosfets. This gives generous power headroom and the capability of Non-Stop high reliability operation anywhere in the world.
Under severe load mismatch conditions (poor SWR, Return Loss) the unit automatically folds back the power to a safe level to protect itself, the antenna and cables from damage. When the load becomes again, full power restores automatically and instantly. The front panel has a forward and reflected power meter, so you can monitor the state of your antenna all the time.
All our transmitters and amplifiers remain stable in power and spectrum purity regardless of VSWR mismatch, over temperature, incorrect supply voltages etc. They will work in hostile climates and still remain within the International Telecommunications Union (ITU) standards at all times.
This product's AC version is truly versatile and can be used with any AC outlet globally, accommodating a voltage range between 90 to 260V and at 50 or 60Hz.
The regular version of this unit is 90 to 260V AC. However we can also manufacture it for 12V or 48V DC. To the best of our knowledge, in the entire world, Only We Make 12V DC FM Broadcasting Transmitters and Amplifiers up to RF Power Outputs of 250W.
Applications include mobile setups where only a car or vehicle battery is available. We have a perfect Magnetic Mount FM Antenna for mobile setups. Also fixed installations with connection to solar battery systems of 12V and 48V DC
We default ship the AC version. If you want the 12 or 48V DC version, it's important you notify us by email when you make your order.
The model will work with our 50 ohm antennas listed below:
This amplifier complies with EMC, Voltage Safety and RTTE Harmonised Standards laid down by the European Union. It's CE marked with a Declaration of Conformity. More information HERE
All stated measurements were made at 220VAC at 27 Degrees Celsius ambient temperature unless stated.
|User Manual||Click Here|
|RF Power Output||Adj. 250 Watts into 50 ohms|
|Power Input||900 to 1400mW (1.4W MAX.)|
|Spurious Emissions||Less than -75 dB ref to carrier|
|Harmonic Emissions||Less than -70 dB ref to carrier|
|Freq Range||87.5 to 108 MHz|
|Residual AM||Less than 0.5 %|
|Synchronous AM||Less than 0.5 %|
|RF Ruggedness||Any VSWR phase for length of time|
|Operating Temp||-20 to +40 Deg C|
|AC Input Voltage||90-264 V AC 47-63 Hz|
|AC Input Power||480W Continuous for 250W RF OUT with RF SWR less than 1.5|
|Working Humidity||20-90% RH non-condensing|
|Safety Standards||UL60950-1 TUV EN60950-1 BSMI CNS14336 CCC GB4943 J60950-1 approved|
|EMC Emission||Compliance to EN55022 class B EN61000-3-2 3 FCC PART 15 / CISPR22 class B CNS13438 class B GB17625.1|
|EMC Immunity||Compliance to EN61000-4-2 3 4 5 6 8 11 light industry level criteria A|
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