400 watts HF Linear amplifier (1of3)

[@qithulterus]

VERY GOOD JOB

[@homebrewguykc1atw268]

Thank you

[@qithulterus]

CAN THE IRF 244 REPLACE WITH IRF P 250??????

[@homebrewguykc1atw268]

yes I tested with 250N and it works fine

[@HB9GZE]

Congratulations! Great project!

[@homebrewguykc1atw268]

Thanks a lot

[@homebrewguykc1atw268]

Thank you

[@alfredkwok9239]

Are you native Korean ? 73 de VR2SA

[@homebrewguykc1atw268]

yes I am de KC1ATW

[@HL1KKC]

수고 많으셨습니다 ~

[@homebrewguykc1atw268]

늘 관심 가져 주셔서, 감사합니다.

[@radiotec76]

At last there’s a high power linear amp using cheap transistors! Awesome! That’s a bit extreme for a heat sink don’t you think?

[@homebrewguykc1atw268]

It was ok winter time, but, yes a lot of heat on summer, and I have replaced the heat sink with bigger one

[@radiotec76]

@@homebrewguykc1atw268 Oh really? Just how much waste heat in watts does that amp produce?

[@homebrewguykc1atw268]

@@radiotec76 Input power was ~600 watts, while output power was ~ 400 watts, so ~ 200watts heated up the heat sink

[@radiotec76]

@@homebrewguykc1atw268, WOW! That’s a lot of heat! You ever thought of double purposing that linear as a coffee maker, hi hi? 😃

[@homebrewguykc1atw268]

@@radiotec76 Yes, actually It works as a heater in winter

[@vsmichael1]

I saw it only talking about 90 watts.

[@blackchannelyf5toe206]

Good experience final tipe my friend....?

[@hamradiolab]

좋은정보 감사합니다
ds2hfi 입니다.73

[@homebrewguykc1atw268]

아즐사에서 뵙다가 여기서 뵙게 되니 더욱 반갑습니다

[@HarishKottayam]

Thank you so much this innovation.. I was badly searching an option seeing at the costly branded ones out there in the market. Will definitely try making it... 73's de VU3FXE

[@johnwest7993]

Thanks. But if the audio isn't in English, why is the title?