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It has an on-board low pass filter so can be used as a final amplifier directly connected to an antenna or as a driver for high-power designs
Attenuation /m - 500MHz =0
bias control
High quality Bourns single-turn SMT trimmer in 4mm case
Amateur Radio 4m High Power 300W Amplifier Module new It has an on-board lowThe Enigma Broadcast 4m high power amplifier is perfect for those wishing to increase their presence on the 4m band. With an output of 300 350W with an input drive of only 1. 5W, this compact module has several novel features and excellent specifications. Based around the design of our hugely successful 2m 300W amplifier, we have re tuned and optimised the PA for the 4m band, resulting in excellent performance. Very high efficiency of over 75%