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Old 23rd March 2008, 06:31 AM   #1
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Default The PINNACLE of Home Brew Amps - Or Not...

Sorry, if this has been posted somewhere before, but I just had to share it. (And yeah I know technically it would belong in the tube section...)

http://www.g8wrb.org/useful-stuff/eb...-amplifier.pdf

Enjoy,
Austin
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Old 23rd March 2008, 07:35 AM   #2
TheMG is offline TheMG  Canada
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Wow, that's crazy.
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Old 23rd March 2008, 09:05 AM   #3
djk is offline djk
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It's RF, not audio.
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Old 23rd March 2008, 10:33 AM   #4
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From the looks of this project everything in it was salvaged from junk equipment. It is the paramount diy on a budget design.
Other than a missing rectifier what makes you think it never worked? If this unit was constructed by a young teenager I would say they did quite a good job for a first time project. At least they gave it a go and did not quit.
If you look at some of NP's very early work you would never believe the same person brought us the fabulous SS amps we see today.
It is a nice conversation piece. I like it. Tad
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Old 23rd March 2008, 06:45 PM   #5
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Anyone aware of Bob Carver's coffee-can amp?
Allowed him to start in the business.
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Old 23rd March 2008, 06:51 PM   #6
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Meh. No clipleads in sight. Very amateur 'rat' amp.
You should see some of my proto's. I do have a preference for MDF as chassis though.
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Old 24th March 2008, 02:33 PM   #7
nitrate is offline nitrate  United Kingdom
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Looks fine to me
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Old 25th March 2008, 01:49 AM   #8
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Not that bad.

Could be worse............they could have made a huge case, made the amp look big and powerful, then used an LM386 inside.
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Old 25th March 2008, 03:02 AM   #9
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Man, it looks like an ham radio transmitter: 80, 40, 20, 15, 10 meters
Construction techniques styled back to 1950...
These were standard frequencies those days (I mean wave lenght)
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Old 25th March 2008, 03:18 AM   #10
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it is a ham radio amplifier. Those are ham hf radio bands, 10 meters (28-30MHz), 15 meters (~21MHz), 20 meters (14MHZ), down to 160 meters wavelength (1.8MHz I think), that's a huge antenna!!! The FCC is currently trying to "steal" the airwaves from the hams to make room for more telecom companies $$$. What a shame. Isn't it a man's natural right to use the airwaves? I mean in a couple of decades we'll be paying to breathe air. Anyway, this amp reminds me of a friends story about a homebrew kilowatt cb radio amplifier, it would give the guy the runs every time he turned it on. loll
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