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rf power amplifierに関連するいくつかの内容
Nick M0NTV は、自作の 17m SSB リグを RF パワーアンプの構築で完成させました。
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rf power amplifierに関連するいくつかの提案
#Power #Amplifier。
[vid_tags]。30 – RF Power Amplifier。
rf power amplifier。
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Circuit and layout
Cheers mate just found your channel by chance and subscribed. I've also just ordered that book.
Cheers 73s de VK6HIL
Great work Nick! Can't wait until you show it working in the next video. Btw did you check out the MRF101 ? – it's around ~23£ and delivers around a 100 watts.
Best Regards ,Ash M0LKA
aqui e do brasil muito bom parabens
Crocodile Nick Dundee … that's not a heatsink … that's a heatsink!
Excellent 👍👍👍 ❤️
Ok I'm over in the USA, Muskegon Michigan. I just found your channel, it wasn't easy to find on YouTube.i was going down a rabbit hole,and BOOM I'm here?
So I subscribed to your channel to see how it goes
Ah, sometimes life's just too short for QRP… Nice work Nick!
Thanks for another great video Nick, congrats on achieving 83W output power 73's Bob
That great. I found with FET's that are high gain low drive. I made a few over the years, using BJT RF transistors like MRF 454/421/455 and 2SC 2290/2879 different bias and tuning and make more heat. I have even used 24V and 50 V BJT as well. 2SC2510 Etc. working with LD Mos now. MRFX 80H /BLF 188XR for 6 meters and 2 meters. watch that thermal past. the stuff sold for computers is reactive to RF and will de tune the amp. I had some repairs come threw that CPU thermal compound was used. That ok for oversupply's like LT 1083 reg etc. to get same power on MRF 421 you need about 3 to 5 watt drive . around 10watt gets appx 100 watt PEP out. drawing 12 amps 14V or so. be careful with 50V and higher FET;s. I had one blow the lid right off and made a dent in my ceiling .was one like you are using but VHF on 6meter. had to much bias and not enough attenuator on input. hear in the USA ,NY state been some great 6meter activity . and some 10 and 12 meter as well. 73's
A fun and informative video, thanks again Nick. I was chuckling at the size of the heat sink till you got to the 80W part. That shut me up! 🤣
Brilliant video mate!!! I subscribed on your channel !!
Could you please write to me details about the book?
I didn't found that.
Greetings from New Zealand
I love the idea of buying the $20 Chinese kits just for the parts you need.
Nick, have you figured out the stages efficiency? Thats a really good measure of how well its working, best i have got was approaching 80% in my 5 watts tx
great stuff welcome back hope you had a good holiday
looking good!
👍Excellent. Look forward to seeing this in action.
Thank you for the video. Can I stick the output of the digital oscillator directly into this rf amp ?