A bit off topic question

oh8jep apo at KOTINET.COM
Thu Jun 26 14:37:49 EDT 2003


I have two good Eimac 8875 ceramic tubes,available for use,but where to find suitables sockets and good working schematic
for exactly these tubes? Does anyone have any good ideas?

73's

Aatos OH8JEP


----- Original Message ----- 
From: "Misic, George J." <GMisic at MEDRAD.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Thursday, June 26, 2003 8:14 PM
Subject: Re: A bit off topic question


> 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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