[R-390] Ballast Tube, 3TF7

[David C. Hallam]

$30 for a ballast tube is probably a little under the going price.  Unless
you have really fluctuating line voltage, you really don't need one.  Check
the Pearls of Wisdom in the archives for ways to eliminate the ballast tube:
resistor or 12BY7 or change the PTO and BFO from 6BA6 to 12BA6. Personally,
I went the 12BA6 route.

David
KC2JD/4

> -----Original Message-----
> From: r-390-bounces at mailman.qth.net
> [mailto:r-390-bounces at mailman.qth.net]On Behalf Of Harold Hairston
> Sent: Monday, December 17, 2007 10:12 PM
> To: R-390A Receivers
> Subject: [R-390] Ballast Tube, 3TF7
>
>
> The Ballast Tube in my R-390A just went bad. My usual source for
> tubes wants $30.00 for one 3TF7. Is this about the going rate? If
> not, I would appreciate reccomendations for an alternate supplier.
>
> Thanks.
>
> Harold
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