The NEC LD7262 series of PPM focused traveling wave tubes are designed for final amplifier in the earth-tosatellite communication's transmitter. These are capable of delivering an output power of 750 W over the range of 5.85 to 6.45 GHZ and an output power of 700 W over the range of 5.85 to 7.1 GHZ With a power gain of more than 45 dB at any power level. Furthermore, these are rugged and reliable design offering long life services.