[AMRadio] 75TH vs. 75TL (was Class C stuff)

[Gary Schafer]

Check out this web site that I ran across the other day. It has a lot of
that stuff there. Several pages of specs on most tubes. Might save you
guys some work.

http://frank.nostalgiaair.org/

73
Gary  K4FMX



Bob Bruhns wrote:

> Oh yeah, oh yeah, oh yeah.
>
> If you have too much to scan yourself, send me photocopies and I'll
> scan them too.
>
>   Bacon, WA3WDR
>
> ----- Original Message -----
> From: "Phil (VA3UX)" <phil at vaxxine.com>
> To: <amradio at mailman.qth.net>
> Sent: Wednesday, March 20, 2002 8:17 PM
> Subject: Re: [AMRadio] 75TH vs. 75TL (was Class C stuff)
>
> > I have an old Eimac catalog that has data on a lot of these old
> tubes, even
> > plate curves on some of them.  ANy interest in me scanning them
> and posting
> > them on my website ?
> >
> > Phil
> >
> > At 06:45 PM 3/20/2002 -0500, you wrote:
> > >I
> > > >What is the difference between the 75TH and 75TL? I seem to
> recall it was
> > > >only a different bias setting?
> > >
> > >'H' = high mu
> > >'L' = low mu
> > >
> > > >Also, with respect to the 30K-1 vs. 30K-5, I think the only
> difference in
> > > >in the PA deck - mod deck should be the same, so....is there an
> > > >adjustment somewhere on the mod deck for setting the bias on
> the
> > > >modulators? How much of a difference is there to use a 100TH
> instead? I
> > > >seem to recall you saying that you ran 100THs in yours....
> > >
> > >Check ARRL manual or Eimac tube sheets.
> > >
> > > >Brett Gazdzinski wrote:
> > >
> > > >> In my 30k-1, the 4-125 would glow very bright orange
> > > >> at 2500 volts and 150 ma.
> > > >> The 4-250 would show slight color, the 4-400 would not
> > > >> show any color at all.
> > >
> > >Why is no one surprised at this news?? <G>
> > >
> > >Bill
> > >--
> >
> >-------------------------------------------------------------------
> -------------------
> > >wwd at netheaven.com  To the warriors go the spoils of war; to the
> hindmost
> > >.  .  the surplus.
> >
> >-------------------------------------------------------------------
> -------------------
> > >
> > >
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