An update on the 6146 tube

[Bill Coleman]

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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