A bit off topic question

[Jerry Forwood]

Yeasu 2100B and Heathkit SB200  both use 572-B in the horizontal
position.
73 de Jerry, KØEJF

On Thu, 26 Jun 2003 13:14:24 -0400 "Misic, George J." <GMisic at MEDRAD.COM>
writes:
> We tried 572-Bs [running them on their sides in the Clipperton
> amplifiers]
> other than Cetron or United Electric [from France or the Far East]
> at
> Dentron with BAD results.
>
> George KE8RN
>
> -----Original Message-----
> From: Murray Leshner [mailto:murrayatwork at hotmail.com]
> Sent: Thursday, June 26, 2003 11:04 AM
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: Re: A bit off topic question
>
>
> I second Randy's information. Grid-to-cathode (filament) shorts can
> result.
> 572B was designed for horizontal service, however. That's why it
> tolerates
> that. Not sure if Chinese ones are designed for horizontal use.
>
> Murray
>
>
> >From: Randy Kaeding <rkaeding at HEATHKIT.COM>
> >Reply-To: Randy Kaeding <rkaeding at HEATHKIT.COM>
> >To: HEATH at LISTSERV.TEMPE.GOV
> >Subject: Re: A bit off topic question
> >Date: Thu, 26 Jun 2003 10:21:59 -0400
> >
> >Aatos:
> >
> >According to the tube specification sheets, both tubes must be
> mounted
> >vertically, either right-side-up or upside-down. In short, the
> answer is
> >no--they should not be mounted horizontally.
> >
> >Randy, K8TMK
> >"One of the Hams (still) at Heathkit"
> >
> >
> >
> >
> >-----Original Message-----
> >From: Heathkit Owners and Collectors List
> >[mailto:HEATH at LISTSERV.TEMPE.GOV]On Behalf Of oh8jep
> >Sent: Thursday, June 26, 2003 7:19 AM
> >To: HEATH at LISTSERV.TEMPE.GOV
> >Subject: A bit off topic question
> >
> >
> >Hello!
> >
> >Does anyone knows based to experience,if 3-500Z
> >or equivalents including 4-400A,could installed in horisontal
> positions
> >securely without fear of future problems.
> >I am planning to homebrew one tube small boxed tiny amplifier for
> about
> >600Watts output,and I should like to know that surely before going
> on in
> >the
> >project.
> >
> >73's
> >
> >Aatos OH8JEP
> >
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73 de Jerry, KØEJF

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