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[TenTec] Centaur

To: <tentec@contesting.com>
Subject: [TenTec] Centaur
From: n4py@earthlink.net (Carl Moreschi)
Date: Thu, 21 Feb 2002 22:46:02 -0000
A little simple math will show what we can expect from the
Centaur in terms of output.  The specs say we shouldn't apply more
drive than is necessary for 500 milliamps plate current.  At this current,
the high voltage on the tubes drops to 1500 volts.  Multiplying .5 amps
times 1500 volts produces 750 watts input to the tubes.  The best
we can hope for in terms of efficiency is 60 percent.  This yields 450
watts output.  So I would not expect more than 450 watts output without
exceeding the published plate current maximum for the Centaur.

If you exceed the 500 milliamps current, you are asking for trouble.

Carl Moreschi N4PY
Franklinton, NC
----- Original Message ----- 
From: "Joe L Blackwell" <aa4nn@juno.com>
To: <k9ot@mhtc.net>
Cc: <TenTec@contesting.com>
Sent: Thursday, February 21, 2002 9:38 PM
Subject: Re: [TenTec] Centaur

> You need to put some watts in to get watts out.  Nowhere have I seen what
> has
> been the amount of drive applied to get, say, 400w out.  Centaur is a
> 600W amp.
> 73,
> Joe, aa4nnn
> On Thu, 21 Feb 2002 12:04:28 -0600 "Paul DeWitte K9OT" <k9ot@mhtc.net>
> writes:
> > I would like to thank all who responded to my inquiry  about low output
> of
> > the Centaur. By exceeding their recomendations of 550 mills plate
> current I
> > have got around 500w out. I think almost 600 on one band. This is not
> my amp
> > but the person that bought it is not very happy with the results (400w
> out
> > and not 600W) as the book says. This does not speak very well for Ten
> Tec in
> > my opinion. I had thought about buying a Centurian because I want  the
> Ten
> > Tec QSK. For you Centurian owners is this the same deal of only 2/3 the
> > output of advertised or does it put out 1kw on cw like they say? 
> > Thanks 73
> > Paul k9ot
> > 
> > 
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