[TenTec] About the ACOM/Orion

[Duane A Calvin]

I may be wrong here, but isn't ACOM the same company that Alpha-Power
worked with in Bulgaria and taught them the ropes only to have them
cheapen up the parts in the Alpha 91b to the extent that Alpha brought
the manufacture of that amp back to the USA?  Did they respond by copying
the 87A design with the 2000A?  Maybe they didn't understand what the
"arc fault" was supposed to be?  Or do I completely misunderstand the
situation with them?

        73, Duane


On Wed, 29 Dec 2004 16:36:02 -0000 "Bob Henderson" <bob at cytanet.com.cy>
writes:
> Thanks Barry, that's interesting though I'm unsure what Arc Fault on 
> the
> 2000A actually means.  Arc Fault in the 87A is determined by 
> excessive
> instantaneous plate current and usually means a tube has flashed 
> over
> internally.  Quite common with new tubes.  I suspect it means 
> something else
> on the 200A.
> 
> I wonder whether the folks who experience this problem are using 
> "Amp Key"
> or "Keying Loop" connection or if they find them both to fault in 
> the same
> way?
> 
> Bob, 5B4AGN, P3F
> 
> 
> ----- Original Message -----
> From: "Barry N1EU" <n1eu at netscape.net>
> To: <tentec at contesting.com>
> Sent: Wednesday, December 29, 2004 4:18 PM
> Subject: Re: [TenTec] About the ACOM/Orion
> 
> 
> > "Bob Henderson" <bob at cytanet.com.cy> wrote:
> >
> >
> > >What fault condition does the Acom 2000A indicate with this 
> particular
> > >failure?
> >
> > Evidently it's an Arc Fault condition.  In my experience, the 
> 2000A is
> particularly finicky about detecting this specific "fault" 
> condition.
> >
> > >Does the Acom 2000A need to operate in loop mode to avoid hot 
> switching?
> >
> > No, not at all.  My 2000A is quite happy driven from the Orion's 
> "Amp Key"
> interface or the keying loop.
> >
> > 73,
> > Barry N1EU
> >
> >
> >
> >
> > 
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Duane Calvin, AC5AA
Austin, Texas