[TenTec] Balanced Tuners revisited

[Robert & Linda McGraw K4TAX]

The stepped inductors are tapped iron core devices and are used in the 254
series of 200 watt rated tuners.  The tapped inductor is wound on a 2" dia
powdered iron core and has 47 taps.  The part number is 80402.  Inductance
is selectable from 0.1 uH to 20 uH.

The roller inductor is used in the 238 tuner rated at 2 KW.  The inductor
part number is 81040.  The inductance is variable fro 0.1 uH to 19 uH.

Also available is the high power variable capacitor part number 80858-1.
The rating is 40 pF to 500 pF with a voltage rating of 3.5 KV.

I suggest that you contact Tentec direct for current price and availability
on these items.

Hope this helps.

73
Bob, K4TAX


----- Original Message -----
From: "Tom Althoff" <althoff at verizon.net>
To: <tentec at contesting.com>
Sent: Friday, October 03, 2003 8:35 AM
Subject: Re: [TenTec] Balanced Tuners revisited


> Can someone describe the TT inductors?  Where are they used?   The term
> "stepped" inductors intrigued me.  Not sure what these beasts might be.
Are
> we talking tapped torroids?
>
> Are they available as standalone replacement parts?   Price?
>
> Thanks!
>
> Tom K2TA
>
> ----- Original Message -----
> From: "Al Scanandoah" <k2zn at rochester.rr.com>
> To: <tentec at contesting.com>
> Sent: Friday, October 03, 2003 7:50 AM
> Subject: Re: [TenTec] Balanced Tuners revisited
>
>
> > Last year, I built up such a beast with a single inductor, based upon a
> > Zack Lau project in the 1990 ARRL Handbook.  Not a true balanced design,
> > but the current balun on the 50 ohm side helps smooth things out.
> >
> > It works OK, but nowhere near as well as my dual roller inductor
> > network.
> >
> > I'm sure performance could be improved by using a pair of the TT
> > inductors driven in tandem.
> >
> > Al, K2ZN
> >
> > Tom North wrote:
> > > Recently there was a bit of discussion on balanced tuners, a la AG6K,
> and
> > > the question came up about the use of Ten-Tec's small stepped
inductors.
> Has
> > > anyone tried this? Any comments?
> > > 73,
> > > Tom  N5OZQ
> > >
> > >
> > > _______________________________________________
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> > > TenTec at contesting.com
> > > http://lists.contesting.com/mailman/listinfo/tentec
> > >
> >
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