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My 1st Homemade Hf amp. 1kw+ from 1X 3-500Z tube 160 through 10 

Nelson Antennas
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This was my very first HF amplifier build. It will work 160 meters through 10 meters and output power is slightly over 1000 watts. The plate transformer is 2610 volts at 500 milliamp continuous duty. After full bridge rectification the plate voltage is 3550 volts. At the time of the video the amplifier is operational on 10 meters and about 90% complete. Now in the process of finishing this amplifier and building a 4 - 1000 amplifier as well. The single 4-1000 should do 5000 watts peak and about 2600 RMS. For the 4-1000 amp it will be powered by a 3amp @ 2000v Peter Dahl. It will be ran on a doubler so the plate voltage will be around 5700VDC.
If there are enough views and requests for a follow along on the 4-1000 amp I will do videos of my step by step progress. 73

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4 мар 2016

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Комментарии : 22   
@Mauldropper508.
@Mauldropper508. Год назад
Looks good and nicely done,your welcome 😊
@Pivotal_Moment
@Pivotal_Moment 5 лет назад
Scouring RU-vid and stumbled across this video. Very nice work. Great to see the art/practice of HF amplifier building is still alive somewhere. (Subbed)
@RL-521
@RL-521 4 месяца назад
Nice!
@ericdee6802
@ericdee6802 2 года назад
Very nice work!!!
@JesusIsLordofMybeing
@JesusIsLordofMybeing 4 года назад
Very nice. Love the idea of your call in meters!!73's
@Partsocaster
@Partsocaster 8 лет назад
Nice work.
@goodcitizen
@goodcitizen 5 лет назад
Excellent!!!
@adriantaitt3646
@adriantaitt3646 8 лет назад
hi nice I want to make one myself great job
@UDX-21
@UDX-21 5 лет назад
Nice.
@danishnative9555
@danishnative9555 7 лет назад
That's very nice work. Custom labeled meters. Is the chassis Alodined? The skirted knobs must have been pricey. You can make a more compact filament choke with 2 or 3 big 2.4" dia ferrite toroids. #43 for HF. Though most use ferrite rod which is less expensive. Watch out for the switching supply on the bottom side. I've purchased a few of those like that are notoriously noisy and have very poor line and output filtering. If it's running during receive mode it will radiate back into the T/R switching.
@ale18TXE
@ale18TXE 3 года назад
Hi, great job! How did you arrange the scale of the plate voltage meter? Thank you.
@chriswesney
@chriswesney 7 лет назад
Nice...Any progress on the 4-1000? That is the tube I would like to build my amplifier with...
@bob4analog
@bob4analog 7 лет назад
Excellent amp! At 3:41 is a SMPS; is that for the filament power?
@archerytech1
@archerytech1 5 лет назад
Sorry for the delay but no, that little power supply is just a 24 volt power supply that powers several of the relays. If you look just before that there's a Hammond Transformer that is used for the filament.
@rasinrekoil6831
@rasinrekoil6831 4 года назад
How can I learn how to build one of these?
@ramonvice6710
@ramonvice6710 4 года назад
Where did you get the tuning caps?
@archerytech1
@archerytech1 4 года назад
Ameritron AL80B replacements
@smittyb9418
@smittyb9418 3 года назад
What's your price to build a 3 3-500z amp ???
@elbertsimpson7529
@elbertsimpson7529 9 месяцев назад
Did you know Bill Nelson TX
@archerytech1
@archerytech1 9 месяцев назад
Sure didn't/ don't.
@aga5897
@aga5897 2 года назад
Awesome ! I'm building a 300W amp using an antique GI-6B tube right now. I was concerned when i saw the HT come up slowly. If you did a video where you tune the thing using the Plate and Load caps, gimme a link ! Thanks for making this video. EA7KNW
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