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Re: [Amps] Homebrew Amplifier Building and Cabinets

To: Lee Buller <>, Amplifier Reflector <>
Subject: Re: [Amps] Homebrew Amplifier Building and Cabinets
From: James Colville <>
Date: Sun, 2 May 2010 16:56:59 -0700
List-post: <">>
Thanks Lee...

No, that is not a BNC,  It's an SHV.

And the coax is RG59. Which also has a 5KV (actually more) rating.  Look at
the chassis connector. Much different better than a BNC connector.  I had
originally used an Millen type HV connector. You can see the holes where it
mounted above and below the SHV connector. Much safer connector because I
have cats that can get around the high voltage power supply. There was a
discussion on AMPS about SHV connectors a while back. Do a search of the
archives and you will find it. I bought the 2 chassis connectors and a
pre-built 6' RG59 cable on Ebay. My plate voltage is 4000 volts.

I riveted some of the power supply parts together. If I had it to do over
again, I would not use rivets. BUT the RF deck, used rivets to hold the
aluminum angle to the "base plate". Take a look at the RF deck and you can
see that.

All of the other panels are screwed to the angle. I tapped the angle with a
6-32 tap. The angle is thick enough for threads and it works very well. You
have to clean the tapped holes out well so there are no burrs that keep the
mating panel away from the angle. I use a 1/2" drill bit with black tape on
the shaft for a reamer and de-burrer.   I bought a hand reamer but the drill
bit works better.

Jim W7RY

On Sun, May 2, 2010 at 2:38 PM, Lee Buller <> wrote:

> Jim,
> Nice pictures and nice construction.  I was wondering....  You are using a
> BNC connector and RG 58 for the HV?  Does that work?  Could you confirm
> that?  I am in the process of building a PS too and was going to use a wood
> base and metal sides as you did.  Did you pop rivet things together or did
> you use a tap for machine screws or did you use sheet metal screws?   What
> is your preference.
> Lee - K0WA
> <>Ham Radio Operators:  Kansas QSO Party is
> August 28-29, 2010.  See for details
> In our day and age it seems that Common Sense is in short supply. If you
> don't have any Common Sense - get some Common Sense and use it. If you can't
> find any Common Sense, ask for help from somebody who has some Common Sense.
> Is Common Sense divine?
> Common Sense is the image of the Creator expressing revealed truth in my
> mind. -  J. Wolf
>  ------------------------------
> *From:* James Colville <>
> *To:* Amplifier Reflector <>
> *Sent:* Sun, May 2, 2010 4:09:53 PM
> *Subject:* [Amps] Homebrew Amplifier Building and Cabinets
> I have added pictures of the power supply of my home-brew 8877 amplifier
> project. Easy construction.
> I used aluminum angle and aluminum flat plates. I purchased the flat plate
> cut to size at Metal Supermarkets  I
> also
> got the angle there too. I cut the angle with an aluminum cutting blade in
> my table saw. I think the blade was about $80.00. It cuts super smooth!  I
> could have cut the aluminum sheet too but bought the blade after I bought
> the pieces already cut.
> The advantage of getting all the pieces cut to YOUR SIZE, is you can make
> the cabinets the size YOU want it to be.
> Pictures:
> Enjoy.
> 73
> Jim W7RY
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