Bob,
The shunt L at the output end would put the antenna at ground potential and
could make reception quieter. I've used both configuratioins sucessfully.
400 pf should be plenty, but you may need more for 160 meters.
- Jules K8JK, the infamous JK, W8JK is the famous one!
----- Original Message -----
From: "Bwana Bob" <wb2vuf@qsl.net>
To: "Stuart Rohre" <rohre@arlut.utexas.edu>
Cc: <tentec@contesting.com>
Sent: Thursday, July 03, 2003 6:54 PM
Subject: [TenTec] Re: L net tuners
> That's a clever idea. In my reading on L networks, I usually see a
> series inductance and shunt capacitance at the output end, but the
> antenna book says that a shunt L and series C can also be used. I
> haven't seen this configuration anywhere. How is the TT model 238 wired
> and how much capacitance is used? Is 400 pf enough?
>
>
> Bob WB2VUF
>
> Stuart Rohre wrote:
> >
> > A simple mod to the Ten Tec T kit ground tuner converts it to a
transmatch
> > of the L network type. It is normally a series variable L , fixed
series C
> > (switched values).
> > A bit backwards to most L tuners, but it works. The mode insulates the
mid
> > junction of L and C and converts it to coax jack.
> >
> > Instead of being set up only to series tune a ground wire, you can L
tune an
> > antenna, or use a shorting plug and go back to ground tuner
configuration.
> > Just reverses some existing wiring to turn the circuit around.
> > 73,
> > Stuart K5KVH
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