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50 MHz (6m) Power Amplifier

My Meon puts out a whole half a watt. I need a linear amplifier.

I also happen to have a small stash of MRF234 transistors. Good for 25W to 30W at 90MHz, 13dB gain at 50MHz. This will need a driver that boosts the 0.5W from the Meon to at least 1.5W -- no reason to not use the same transistor since I have them available already.

I quite like the RF Amplifier from the 4th edition of the RSGB VHF/UHF manual.

Other ideas

SourcePinPoutActive Device(s)Power Requirements
6 Meter VHF Packer Amplifier 100mW / 1W (with 10db pad)30WMitsubishi RA30H0608M RF mosfet module12V @ 6.2A
50MHz 3W PA 0.2W3W2SC196912V
Designing and Building Transistor Linear Power Amplifiers, also Part 2 0dBm5W (two stages)MRF 143, MRF 14628V
LA8AK 6m PA using 2N6083 or 2N6084 0.5W30W2N608312V
50MHz 16W MOSFET 0.3W16WIRF 61050V @ 500mA
30W PA for 50MHz with MRF450A (YO5PBG) 2.25W28WMRF 45012.7V
30MHz - 150MHz 30W MOSFET 30WMRF 136Y28V
50MHz 40W MOSFET (DJ9FG) 40W2 x IRF 61050V @ 1.5A
Six Meter Final Amplifier (K9EID) 75W5894600V @ 180mA
QST May 1982 8W100WMRF 49213.5V
6 meter Amp. With an MRF492 (DL5DBM) 8W100WMRF 49213.8V @ 15A
6m 200 Watt linear using a 4CX250B 3W250W4CX250B2kV @ 250mA
QST September 1984 10W300W4CX250B2kV @ 250mA
A 50 MHz, 250W Amplifier Using Push-Pull ARF448A/B (Class C) 8W250W2 x ARF 448125V
A 300W MOSFET Linear Amplifier for 50 MHz 10W300W2 x ARF 44880V @ 6A
A Broadband, Solid State Amplifier for HF and 6 Meters (N4IP) 30W1000W2 x MRF15751V @ 42A

More ideas here.


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