On Dec 30, 2005, at 6:16 PM, John wrote:
> Hi Jason
> My L4 used Amperex 3-500Z tubes. When used at the power level in
> the drake manual and the Drake tune up procedure, did not show any
> color except at long key down at I kw input. The manual said they are
> not to show color.
Does Amperex know this?
> The L4 was made for a short time before the L4B . The L4 is much
> rarer. The ability to see the tubes causes problems for the mind.
> Think of the poor tubes in the AL82.
>
> john
> kb9tc
>
>
>
> Jason Buchanan <jsb@digistar.com> wrote:
>> I just sold my L4 and anything key down at or over 1kw input caused
>> the
>> plates to glow very orange.
>
> same here - 3-400Z idle on SSB mode causes them to get dull orangish.
> Sometimes I wish I had some of the new 3-500Z graphite jobs but the
> fan just
> isn't up to snuff to keep them alive.
>
>
> 73 Jason N1SU
>
> --
> Jason Buchanan - Boxboro, MA
> Website: http://n1su.com/
>
>
>
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>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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