HA-10 Rectifiers

[Mark Graalman WB8JKR]

  One minute should be fine, I wouldn't go with less time than that.

Mark  WB8JKR


On Fri, 8 Aug 2003 09:55:54 -0500 "Kechkaylo Dave (ATLINKS)"
<kechkaylod at ATLINKS.COM> writes:
> To All:
>
> I have recently acquired an absolutely beautiful HA-10 1KW Warrior
> linear
> amplifier. Sure, its built like a tank, and may cause a hernia if
> not lifted
> correctly...but... I would like to get it working. The 5-50 Henry
> swinging
> choke is okay....everything checks out okay. But, I was wondering:
> I've
> never used a linear that had a power supply utilizing half-wave
> mercury-vapor rectifiers. The manual mentions that one must heat the
> filaments in the UX-866As to fully vaporize the mercury BEFORE
> turing the
> high voltage on. I understand this, but the manual says heat the
> filaments
> for 30 minutes first, then in another part of the manual, it says to
> let
> them warm up for about one minute first. Which is correct?
>
> I know that there are replacements such as the 3B28s.....are these
> similar
> tubes that require preheating before application of the high
> voltage? I'm
> not sure; they're listed as Xenon-filled replacements. Any help is
> appreciated.
>
> Thanks,
>
> David Kechkaylo, W8QIZ
>
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