[R-390] Best ballast tube resistor

Mon, 12 May 2003 21:40:18 -0400

I have no idea if it is the "best".  I purchased my '67 EAC with a 50 
Ohm 10W in place of R-510.  It is inserted across pins 2 & 7.

I have removed it and replacxed it with a 3TF7 and can see or detect NO 
DIFFERENCE.  My 3TF7 has a fairly small segment that glows.  The 
frequency stability is as good as any R-390A that I've had the fortune 
to use.

Bob N0DGN

[email protected] wrote:

>Should I use a 39 or 40 ohm resistor to replace my bad ballast tube?
>
>1%, 5% or 10% and what wattage?
>
>Someone told me that if I use a resistor, my R-390A would not work properly.
>
>What should I do?
>
>
>
>The Firebottle
>The Original
>Accept No Substitutes
>
>
>
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