Description
Designed for VHF TV transmitters and DAB+ digital FM radio, this amplifier uses the new ART700 from the extra rugged AMPLEON series to produce a minimum of 500W! In a design where performance and efficiency was top priority the cost of this product remains reasonable. This product is provided for experienced FM transmitter fabricators only. If you are not experienced please buy a complete module or a rack-mounted completed amplifier.
Technical specifications:
– 48-50 Volts
– 175-225 MHz
– ART700 50volt LDMOS Technology
– Input/Output 50 ohms
– Pout 500W peak sync analog TV (with 2-3W input drive)
– Pout >100W average digital power in 8VSB
– Pout >100 DVB-T
– Pout >100W for DAB+
– 22 dB gain minimum
– Temperature compensated bias designed by NXP
– Low input SWR
– Size; LxWxH: 98 x 51 x 40mm (LxWxH)
– Weight: 0,9Kg
You can find special mains power supply for this amplifier here!
IMPORTANT:
– Ensure shielding between final stage and audio stage with exciter. Install a good feed-through capacitor on the supply +50V(or more) wiring feeding the power output stage. This will keep and RF from the power line.
– Excessive drive level can damage this amplifier; design of equipment where the amplifier will be mounted must foresee an appropriate protection circuits.
– Amplifier efficiency is function of supply voltage, in order to obtain max efficiency please reduce supply in function of desired output power. Generally best compromise between efficiency and harmonic emission, is obtained when the amplifier work at about 2-3 dB of gain compression.
– RF pallets are sensitive devices, if you do not have sufficient experience please consider a fully finished product instead. They can be burned by applying too much drive power, too high supply voltage, not using proper heatsink, using filter with insufficient specifications, connecting mismatched loads or no load at all and also by soldering coax with too long leads. For this reason there is no warranty for any pallet. We do assure you that every pallet is tested and is 100% operational as it leaves our workshop.
Quantity discount is available and shipping becomes a lot cheaper per unit as quantity goes up. For additional info and prices please ask for a quote here.
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