2m SSPA 1kW Power amplifier by DG3YEV

DG3YEV self-build 2m solid state amateur radio power amplifier 1000W using MRF6VP11KH.
Some details: Cheap compared to commercial solutions. (~500 Euro total cost for parts. Many parts bought second hand) Very high efficency. About 75% at 1kW output. Single Power Supply 50V 30A max. All other needed operating voltages internally generated. I use old modified GSM base station power supplies (Telepower TPS 5500). Simple 7 pole Chebichev LP filter, made of surplus PTFE and copper plates.
The complete PA control/protection circuit is computer controlled. P out, P reflected, SWR calculated out of these values, Input current, supply voltage, temperature, fan control, LCD display and sequencing, all done by a 14MHz clocked 8 Bit Atmel megaAVR microcontroller. Power off time on failure ~20ms. This circuit saved the LDMOS FET's live a few times HI.

[@KandiKlover]

Shiiiiiiiiiiiiiit man. I wish I could do 1000 watts on 2 meters holy fuck.

[@SimonEatough]

Very Nice !.
What Amplifier board are you using ?.
73's ZL2BRG

[@dxchaserz]

Beautiful Work Tobias, I am just building one myself at the moment well done!

[@darknessninja13]

hello I would be interested in your control systems and management of your display sspa if possible thank you in advance f5mag

[@marianoaldogaston]

it seems great.

[@captlarry-3525]

noisy enough to grind coffee

[@miguelfrancisco1035]

Hi, Can you build one for me? Send me an e-mail. Thank you. PY1LO