Hi Mike, try http://www.palomar-engineering.com
If that doesn't work, try google.

----- Original Message -----
From: "Mike Freeman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, November 22, 2002 2:49 PM
Subject: Re: tuning up an antenna


> Where can one buy a "tuner-tuner"?
>
> Mike Freeman < K 7 U I J >
> "All men tend to become that which they oppose." - Laurence van der Post
> ----- Original Message -----
> From: "Henry Brugsch" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, November 22, 2002 2:02 AM
> Subject: Re: tuning up an antenna
>
>
> > Hi Michael, depends on the rig you are working with.
> > If the power supply is sufficiently low-rated, means that as the rig
> draws
> > more current, the louder the hum from the laminations. Thus, out of
> tune,
> > the more hum you get, the rig beginns dancing around on the table,
> screws in
> > the case begin to resonate, and smoke starts curling out of the
> system,
> > until you correct the situation.
> > When the current is at a reasonable level, the hum is generally almost
> gone.
> > But, it depends on the rig. Those old Globechiefs, and some of the
> others
> > used as little as they could get away with, and so, just a bit out of
> > resonence made a loud hum.
> > This was one of these unforeseeable accidents that could never have
> been
> > predicted, or even implemented by an engineer.
> > The noise bridge you have could be used as a tuner-tuner.
> > But, you'd need to preset the thing to a known resonance *I.E. a known
> > resonent antenna, or 50 ohms.
> > Then, don't touch the controls, use an atu, and tune for minimal
> noise.
> > If you start trying to use the bridge to determine where the antenna
> is
> > resonent, and moving the controls, its value will be lost. Unless you
> can be
> > sure where the true setting is for the correct resonence.
> > Essentially, what I am trying to do is show you how to build a
> tuner-tuner.
> > I wish I had thought of this, when I had my original Palomar noise
> bridge
> > many years ago. I could never get any real use out of it, because of
> the
> > fact that I never set it to a known value, and worked from there.
> > That would have been a lot smarter. But, Palomar jumped ahead of my
> > thinking, and created the tuner-tuner.
> > Now, the best situation would be a noise bridge with detents at a
> tested 50
> > ohms, then you could preset the bridge by feeling the detent in the
> control,
> > and working from there. The best of both worlds. Even a bit of nail
> pollish
> > could help, but I tried this, and didn't like the inaccuracy of it.
> > ----- Original Message -----
> > From: "Michael Ryan" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Thursday, November 21, 2002 7:17 PM
> > Subject: tuning up an antenna
> >
> >
> > > Can   a noise bridge which was once used on an old heath kit
> > > HW-12 be used in conjunction with an antenna tuner for reading SWR?
> > > I will try and describe it.
> > > It has a switch on the lower front which slides back and forth to
> the left
> > > or right for turning on or off and a flat roguery knob next to the
> > > switch.  The connectors for antenna and so on are on the top.  It
> also has
> > > a round raised speaker.
> > > I would also like to know what to look for, when it comes to the
> power
> > > supply hum, when the rig is loaded up for maximum out put.
> > >
> > > Thanks all:
> > > Michael
> >
> >