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 are so confident this amplifier won't let you down, it comes with a limited 5 YEARS!!! warranty
(see warranty conditions)
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.
During severe antenna reflections (poor SWR, Return Loss) the amplifier will automatically foldback the power to a safe level to protect itself, the antenna and cables from damage. When the antenna becomes good again, full power automatically restores. The front panel has a meter lit up in blue to indicate forward and reflected power. This protection for SWR and reflected power works for any duration of time.
Each amplifier block uses separate 10 pole low pass filters which are then joined together with a lumped LC version of the Wilkinson combiner configuration. This is brutal filtering ensuring no harmonics or out of band spurious get to the the output. This guarantees the spurious and harmonic signals remain within the tough EU spec of -75dB rtc. (Sec 4.11.1 ETS 300 384), this in turn easily puts them within the FCC and Industry Canada spec.
Click here for user manual
Unlike other power amps on the market, this unit is complete, tested and ready to use on delivery. The internal power supply accepts 90 to 260V AC making it suitable for use in all countries of the world. Just hook up the amplifier to your antenna, transmitter drive and mains power supply. Never take off the lid, no tuning needed, no test equipment required. This unit is truly plug and play. It is suitable for use with all our 1W drivers and possibly other manufacturers 1W transmitter drivers, you would need to check this with us.
We are absolutely passionate about the products we build and we try and think of everything we can do with our designs to make it easier and reliable for the customer. We are not the best sales people, but we are great engineers, so if you have any technical questions please feel free to email us.
|RF Power Output||Adjustable from 1W to full output 250W|
|Spurious Emissions||-75 dBc EU ETS300384|
|Harmonic Emissions||-70 dBc EU ETS300384|
|Power Output||Adj. 0.01 to 1 Watt into 50 ohms|
|Freq Range||87.5 to 108 MHz in 100 KHz steps|
|Spurious Emissions||Less than -75 dB ref to carrier|
|Harmonic Emissions||Less than -70 dB ref to carrier|
|SWR Protected any condition||EU ETS300384|
|RF O/P Connector||N type|
|Wideband||87.5 - 108 MHz at 250W min.|
|Physical Dimensions||2U 300 x 483 x 89 mm|
|Input VSWR||< 1.3 from 87.5 to 108 MHz|
|Model||RSP-320-24 x 2|
|Input Voltage||88 ~ 264VAC 124 ~ 370VDC 47-63 Hz|
|Power Factor||PF more than 0.95/230VAC PF more than 0.98/115VAC at full load|
|Input Power||50W max. 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 approved|
|EMC Emission||Compliance to EN55022 (CISPR22) Class B, EN61000-3-2,-3|
|EMC Immunity||Compliance to EN61000-4-2,3,4,5,6,8,11, EN55024, light industry level, criteria A|