[Amps] [Fwd: Amps Digest, Vol 32, Issue 42]

Mon Aug 8 14:22:27 EDT 2005

Hi: I thought I would like to buy a Henry 8K amp but have been told they 
have some problems. Since they have stopped building new amps and not 
sure about service. Would it be wise to forget about buying one???? 
Richard KB8OTZ

-------- Original Message --------
Subject: 	Amps Digest, Vol 32, Issue 42
Date: 	Mon, 08 Aug 2005 12:00:40 -0400
From: 	amps-request at contesting.com
Reply-To: 	amps at contesting.com
To: 	amps at contesting.com

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Today's Topics:

   1. Re: RF Parts OEM 3-500ZG's (Gudguyham at aol.com)
   2. Re: FW: AMERITRON AL-1500 ???? (Colin Lamb)
   3. Re: RF Parts OEM 3-500ZG's (Joe Isabella)

----------------------------------------------------------------------

Message: 1
Date: Mon, 8 Aug 2005 11:49:48 EDT
From: Gudguyham at aol.com
Subject: Re: [Amps] RF Parts OEM 3-500ZG's
To: r at somis.org, n3ji at yahoo.com
Cc: amps at contesting.com, W4EF at dellroy.com
Message-ID: <1dd.42c26bdc.3028d91c at aol.com>
Content-Type: text/plain; charset="US-ASCII"

In a message dated 8/8/2005 8:05:24 A.M. Eastern Standard Time, r at somis.org  
writes:

I will  NEVER pay twice as much for an Eimac 3-500Z.  I now have the 
>  exact same tubes in a Henry 3K-A, and they take all the abuse I give 
>  them and just keep making power.  I frequently run AM, and have had  
> them as red (orange?) as an electric range heating element on  High.  
> Never had an inkling of a problem, and when I do finally  run them over 
> the edge, I'll buy another set of RFP 3-500ZGs.   With 4kV on them, 
> they will easily exceed 2kW output with 100W.   I'm sure with more 
> drive they'
>  ll make
>   even more power,

3-500Zs typically begin to run out of emission above  420mA per each.

> but I typically drive it with 70-80W to keep it  legal.

But of course, and we always drive at the speed limit on  freeways.

I have owned MANY 3-500 type amps!!  Probably the Ameritron AL-82 runs  the 
3-500Z tube higher than most other amps using the 3-500.  Some Henry  amps may 
slightly exceed the Ameritron, but not by much.  With an honest  100 watts to 
a bird dummy load and a bird wattmeter (read by 2 separate slugs in  same 
meter) I have NEVER seen 2000 watts output from any type of 3-500  tube.  And 
certainly with no less than 100 watts for  sure.

------------------------------

Message: 2
Date: Mon, 8 Aug 2005 08:54:32 -0700 (GMT-07:00)
From: Colin Lamb <k7fm at teleport.com>
Subject: Re: [Amps] FW: AMERITRON AL-1500 ????
To: "R.Measures" <r at somis.org>
Cc: amps at contesting.com
Message-ID:
	<16775255.1123516472607.JavaMail.root at elwamui-hybrid.atl.sa.earthlink.net>

Content-Type: text/plain; charset=us-ascii

Rich said:

"To me, an interesting aspect of the debate is that 
apparently no one who denies that parasites are possible has taken a 
college-level course in Alternating Current Circuit Analysis."

Response:

Rich, I do not think anyone denies that parasitics are possible.  It is you that asserts that parasitics occur in every case and must occur because you say they must, and that anyone who disagrees with you therefore assets that they never can occur.

The Wright Bros. never took a college-level course in Aerodynamics of Flight Analysis.  Probably a good thing they did not, or they may never have gotten off the ground.  Saying that someone is not credible because he or she did not take a particular course in college is simply stupid.  I expect that Bill Gates and Paul Allen did not take a course in How to Make Billions of Dollars in Business before they dropped out of college.  

Should we question your expertise in parasitic suppressors because you did not take a college-level course Parasitic Suppression 101?

Colin  K7FM

------------------------------

Message: 3
Date: Mon, 8 Aug 2005 08:55:27 -0700 (PDT)
From: Joe Isabella <n3ji at yahoo.com>
Subject: Re: [Amps] RF Parts OEM 3-500ZG's
To: Amps <amps at contesting.com>
Message-ID: <20050808155527.73338.qmail at web33104.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

Maybe you should try it with **TWO** 3-500ZGs, like my Henry runs.  It will provide nearly 4kV at 1A with Peter Dahl upgrades.

Joe, N3JI

Gudguyham at aol.com wrote:
In a message dated 8/8/2005 8:05:24 A.M. Eastern Standard Time, r at somis.org writes:
I will NEVER pay twice as much for an Eimac 3-500Z.  I now have the 
> exact same tubes in a Henry 3K-A, and they take all the abuse I give 
> them and just keep making power.  I frequently run AM, and have had 
> them as red (orange?) as an electric range heating element on High.  
> Never had an inkling of a problem, and when I do finally run them over 
> the edge, I'll buy another set of RFP 3-500ZGs.  With 4kV on them, 
> they will easily exceed 2kW output with 100W.  I'm sure with more 
> drive they'
>  ll make
>  even more power,

3-500Zs typically begin to run out of emission above 420mA per each.

> but I typically drive it with 70-80W to keep it legal.

But of course, and we always drive at the speed limit on freeways.

I have owned MANY 3-500 type amps!!  Probably the Ameritron AL-82 runs the 3-500Z tube higher than most other amps using the 3-500.  Some Henry amps may slightly exceed the Ameritron, but not by much.  With an honest 100 watts to a bird dummy load and a bird wattmeter (read by 2 separate slugs in same meter) I have NEVER seen 2000 watts output from any type of 3-500 tube.  And certainly with no less than 100 watts for sure.

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End of Amps Digest, Vol 32, Issue 42
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