[Amps] lcr meter

[mikea]

On Thu, Apr 01, 2010 at 10:54:51AM -0400, Roger wrote:

> Bill, W6WRT wrote:
> > ORIGINAL MESSAGE:

> > On Thu, 1 Apr 2010 06:56:18 -0700, "Jim Thomson" <Jim.thom at telus.net>
> > wrote:

> >> ## exactly what it sez... the mfj 259 is a glorified swr meter.  Don't even
> >> think abt using it to set taps on a tank coil,

> > REPLY:

> > I have to disagree on not using it to set taps on a tank coil. When
> > connected in reverse, i.e. connecting it to the output of a pi-net,
> > with a non-inductive resistor of the appropriate value from plate to
> > ground, it does an excellent job of helping you find the right tap. 

> > For all the other purposes that MJF claims (grid-dipper, etc, etc) I
> > agree it's junk. 

> It's one of the greatest gadgets for setting an antenna tuner you'll 
> find.  Hooked in the line with a switch to select either the input to 
> the tuner, or 259 you can adjust the tuner of 52 ohms X=0, tune the amp 
> into a 50 ohm dummy load, switch amp to the tuner and you are set to go 
> without ever putting a signal on the air.

And for tweaking antennas for best match; I use it to determine best
whip length on my Anttron HamWhips. But that's one of the things it was
designed to do, and so may not belong in this thread. 

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin