[NJARC] Transmitting Tubes

[John Ruccolo]

Hi Pete,

I think that's the 500C, but not sure.

I was thinking of using a 4-125A, loaded at HALF power, for testing.

So, anybody got a 4-400 with some life left? Maybe a radio station pull?

Regards,


JR


--- On Sat, 7/4/09, pmalvasi at aol.com <pmalvasi at aol.com> wrote:

> From: pmalvasi at aol.com <pmalvasi at aol.com>
> Subject: Re: [NJARC] Transmitting Tubes
> To: jr6v6gt at yahoo.com, ng19delta at yahoo.com, njarc at mailman.qth.net, n3ibx at verizon.net
> Date: Saturday, July 4, 2009, 5:26 PM
> Doesn't that transmitter use a
> 4-400?  Or is that just the 500C?
> 
> 
> 
> 
> 
> -----Original Message-----
> 
> From: John Ruccolo <jr6v6gt at yahoo.com>
> 
> To: Scott Roberts <ng19delta at yahoo.com>; NJARC Radio
> Club <njarc at mailman.qth.net>; joseph cro
> <n3ibx at verizon.net>
> 
> Sent: Fri, Jul 3, 2009 10:10 pm
> 
> Subject: Re: [NJARC] Transmitting Tubes
> 
> 
> 
> 
> 
> Just remember 
> Reply = Poster
> Reply All = Everyone
> 
> _________________________________________________________
> 
> Hi Joe/Folks,
> 
> While we're on the subject of transmitting tubes, does
> anybody have a 
> reasonably-priced NOS Eimac 4-250A, or perhaps 1 or 2 used
> ones with some life 
> left?
> 
> I've got a Globe King 500A that I'm planning to
> restore someday....not someday 
> soon, however. ;-) I'll start with the DX-100 and work
> my way up....
> 
> 
> Regards,
> 
> John
> 
> 
> 
> --- On Thu, 7/2/09, joseph cro <n3ibx at verizon.net>
> wrote:
> 
> > From: joseph cro <n3ibx at verizon.net>
> > Subject: Re: [NJARC] 572B tubes
> > To: "Scott Roberts" <ng19delta at yahoo.com>,
> "NJARC Radio Club" 
> <njarc at mailman.qth.net>
> > Date: Thursday, July 2, 2009, 6:59 AM
> > Just remember 
> > Reply = Poster
> > Reply All = Everyone
> > 
> >
> _________________________________________________________
> > Scott,
> >         I have a pair of regular
> 866A's
> > you're welcome to. They're not the 
> > AX variety as manufactured by GE, but they should do
> the
> > job just the same. 
> > Regarding 572B's, they're pretty hard to come
> by used since
> > they were 
> > designed specifically as a "Amateur Radio"
> type of tube,
> > not used in 
> > commercial applications. RF Parts in Ca. sells their
> > Chinese made "Taylor" 
> > 572B's for around $50 or so each. I think your
> best bet
> > would be to contact 
> > them if you don't get any responses. You could
> also try
> > QRZ.com in their 
> > wanted column. Ditto with "Eham.net". You
> may just get
> > lucky and find 
> > someone who has a used pair to sell you at a
> reasonable
> > price.
> > 
> > Best Regards,
> >              
>  
> >     Joe Cro N3IBX
> > 
> > ----- Original Message ----- 
> > From: "Scott Roberts" <ng19delta at yahoo.com>
> > To: "NJARC Radio Club" <njarc at mailman.qth.net>
> > Sent: Wednesday, July 01, 2009 10:14 PM
> > Subject: [NJARC] 572B tubes
> > 
> > 
> > > Just remember
> > > Reply = Poster
> > > Reply All = Everyone
> > >
> > >
> >
> _________________________________________________________
> > >
> > > Hi Guys!
> > > I just found a QST article on how to convert the
> HT-41
> > from 7094s to 
> > > 572Bs- Does anyone have a pair of 572Bs in decent
> > shape to spare? I am 
> > > hoping to recap & convert my Hallicrafters
> Super
> > Paperweight into a useful 
> > > linear amp once again! (I also -still- need a
> pair of
> > 866AXs for the 
> > > rectifiers, unless someone has a good mod for
> them,
> > too...)
> > >
> > > Thanks!
> > > Scott
> > >
> >
> ______________________________________________________________
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> > 
> >
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>       
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