An update on the 6146 tube

[KD2E]

But they are being 'pushed' now as the greatest thing, and just what your
Collins needs, that and a new driver will make the sky turn blue etc. etc.
yada yada...
A lot of hams reading that in QST now thing the 'W' is the tube of choice!
...Dave
----- Original Message -----
From: "Bill Coleman" <aa4lr at ARRL.NET>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Friday, February 09, 2001 9:57 AM
Subject: Re: An update on the 6146 tube


> On 2/8/01 9:53 PM, Larry Knapp at kc8jx at YAHOO.COM wrote:
>
> >The following is the development sequence:
> >6146   Original Design
> >6146W  Ruggedized version of the original
> >6146A  Improved basic 6146
> >6146B  Final improvement
>
> This is what I remembered. The W is more like the original or the A than
> the B.
>
> >The 6146B "appears" to be designed specifically for SSB service.  The
6146B's
> >have a higher plate dissipation than do the 6146 or 6146A and also there
are
> >filament current differences.  There are more differences between the
> >6146/6146A and the 6146B and are illustrated the vacuum-tube data
> >contained in
> >the back of the ARRL Handbook.
>
> Most of these differences have to do with inter-electrode capacitance.
>
> >A tube substitution guide reveals that there are several commercial tubes
> >that
> >can replace the individual 6146 tubes.  This is not meant to be
> >all-inclusive:
> >
> >6146, 6146A, 6146B  -   8298A, 8192A
> >
> >I am not sure if 8298's and 8192's come in B or W versions.
>
> I thought the 8000-series had 12V instead of 6V filaments.
>
>
> Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
> Quote: "Not within a thousand years will man ever fly!"
>             -- Wilbur Wright, 1901
>
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