 | MRF6VP3450H 432 MHz Amplifier |
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| Overview of the
final set-up.
Sufficient cooling is required |
Modification of
the input circuit. add two SKY trimmers.
It is advisable to use a 3dB or more input attenuator, as the input VSWR is not very good. |
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| Initial tune up at
low level: 0dBm input
C426 = 6p8 C423 = 3p0 C489/490 = 3p0
Results: Pi=1mW Po=125mW Gain: 21dB
With more Rf power: Pi=3.7W Po=240W / Saturation |
Power
modification
Added 10p between C423 - C426
Results:
Pi=2.5W Po=300W I=9.5Amp Pi=3.6W Po=360W I=11.5Amp Gain: 20dB |