300 Watt 140-230MHZ amplifier build & tested board with the new Freescale MRFE6VP6300 mosfet (unbreakable)

This mosfet can handle a mismatch from 65:1

This amplifier is no-tune design

Specs analog use:

Input: power:  2 -3 Watt

Output power: 140-230 MHZ Output: 300 Watts +

Input VSWR 144 - 230 MHZ <1:1.5

VCC: 50 Volt

Current: 8.5 - 9 Ampere

Bias: 200ma (SSB +/- 500ma)

Board dimensions 120mm x 60mm

To use this amplifier  an optional lowpass filter and heatsink are needed !

Specs digital DAB+ use:

Input: power:  1 -1.5 Watt

Output power: 140-230 MHZ Output: 35 Watt max 70 Watt

Input VSWR 144 - 230 MHZ <1:1.5

VCC: 50 Volt

Current: 5 - 6 Ampere

Bias: about 2A

Shoulders: -45db at 3MHZ (@ 70 Watt)