50 Watt FM Amplifier


C1-C4 = 10-80pF L1 = 1 coils of diameter of 10mms, 1mm
C5 = 10nF L2 = 7 coils of diameter of 10mms, 0,8mms
C6 = 1000pF L3 = 3 coils of diameter of 10mms, 1mm
C7 = 100nF TR1 = BLY90
C8 = 2200mF/35V

A amplifier of force RF for the FM, is always essential for the amateur that wants it strengthens some small transmitter, that likely already it has manufactured or has been supplied ready. The present circuit can give 50-60W RF force of expense, with control smaller than 15-20W in the region of frequencies of FM, that is to say in the 88-108MHZ. Transistor that we selected for this manufacture is the BLY90, that has gain 5dB. This circuit can be supplied with 12V.

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