This design is based on the new NXP BLF878 42V LDMOS transistor. The pallet is ideal for digital and analog TV broadcast applications. In DVB-T digital the pallet can do 150 watts and in 8VSB the pallet can do 200 watts. In analog application this amplifier can run up to 550 watts peak-sync. The copper base is machined from Tellurium Copper alloy 145. This is a high grade copper and it gives the pallet base the best possible surface finish which promotes efficent thermal transfer to the mounting surface.
Specifications:
- 470-860MHz UHF TV
- 550W peak-sync analog power.
- 19dB gain typical
- 42 volts
- Temperature compensated bias
- External bias with jumper selector
- Input Return loss -20dB typical.
- 40% Efficency
- 90 degree low loss custom heavy duty hybrids
- -40dBc 2 tone at 500W PEP typical. (1MHz spacing)
- Alloy 145 1/4 inch copper base
