[R-390] Anyone have a spare ballast tube?

[Larry H]

Hi Paul,  Sorry, I don't have a spare for you.  However, a very common
substitute is a 12bh7 or 12by7, etc, if your ac power does not fluctuate
much.  Most places are steady enough for them.  The thing is that they
require a simple mod to the filament connections to use them.

Happy Holidays to all.

Regards, Larry

On Thu, Nov 26, 2020 at 12:13 PM Paul Staupe <staupe at gmail.com> wrote:

> I made the mistake of moving my Collins non-A into its cabinet with the
> filaments still warm and lost my ballast tube.  Anyone have a spare?
>
> I was using the one out of my EAC R-390A when I went to a solid state unit
> that's sold on eBay.... for some reason the non-A didn't like it but the
> EAC didn't mind.  Anyone else have that issue?
>
> Happy Thanksgiving everyone!
>
> Paul
> Minnesota
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