[South Florida DX Association] twenty tube amplifier

Bill Dzurilla billdz.geo at yahoo.com
Tue Sep 4 21:42:22 EDT 2007


Hmmm, weighs 110 lbs. without a power supply and puts
out only 1kw.  Think I'll stick with my ACOM.

It does look impressive, though.

73, Bill NZ5N
--- Bruce Phegley <bphegley at bellsouth.net> wrote:

> Thanks Andre, that worked fine.  wow, some amp. I
> would love to have a 
> place to put it!!
> 
> 
> fish7days wrote:
> > Try this URL:
> >
> > http://tinyurl.com/yt99wu
> >
> > Andre
> > N1AJV
> >
> > -----Original Message-----
> > From: sfdxa-bounces at mailman.qth.net
> [mailto:sfdxa-bounces at mailman.qth.net]
> > On Behalf Of Bruce Phegley
> > Sent: Tuesday, September 04, 2007 8:25 PM
> > To: Scott / W4PJ
> > Cc: SFDXA at mailman.qth.net
> > Subject: Re: [South Florida DX Association] twenty
> tube amplifier
> >
> > I never could get the page to come up from that
> link.
> > I figured it was just a bad link, guess not..
> > here is what I get.
> >
> > 	
> > *Page Not Responding* 	
> >
> > 	
> >
> > 			The eBay page or feature you are attempting to
> > access is not responding.
> > Please try the options below:
> >
> >     * *Try to access the feature directly from the
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> bookmark.
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> still can't access 
> > your page:
> >
> >     * *Check our Announcement Board
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> see if the feature is
> >       currently unavailable.
> >
> > If what you are looking for is unavailable, you
> may still be able to 
> > access other parts of the site from the eBay Home
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> >
> > Scott / W4PJ wrote:
> >   
> >> That's really cool.
> >> Like a Log-Periodic antenna, which ever section
> of the system is resonant
> >> does the work, and the other elements just don't
> do anything.  In this amp
> >> which ever section of the tube line-up is
> resonating via the continuous
> >> coil - what is it, I forget  F=2*Pi / FC ?... so
> even though there are 18
> >> tubes in the output section, only two or three
> are making any power / on
> >> each side at a time. Maybe 3 tubes on each side
> of the rail x 2 =  6
> >>     
> > 250B's
> >   
> >> is an easy kilowatt - three on each side at
> whatever frequency happens to
> >>     
> > be
> >   
> >> resonating while the rest of the valves aren't
> being excited.
> >>
> >> No tune Log-Per Amplifier.  I'm impressed.
> >>
> >> Scott / W4PJ
> >> ----- Original Message -----
> >> From: "Tom Lewis" <n4tl2 at earthlink.net>
> >> To: <SFDXA at mailman.qth.net>
> >> Sent: Friday, August 31, 2007 9:12 PM
> >> Subject: [South Florida DX Association] twenty
> tube amplifier
> >>
> >>
> >>   
> >>     
> >>> twenty tube amplifier
> >>>
> >>>
> >>>     
> >>>       
> >
>
http://cgi.ebay.com/Marconi-1kW-HF-Amplifier-TWENTY-4CX250B-Tubes-AWESOME_W0
> >   
> >>   
> >>
> >>     
> >
>
QQitemZ120154931888QQihZ002QQcategoryZ48700QQrdZ1QQssPageNameZWD2VQQcmdZView
> >   
> >>   
> >>     
> >>> Item
> >>>
> >>>
> >>> Tom, N4TL
> >>>
> >>>
> >>>
> >>>
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