Tom,

You want a low SWR at the rig.  If you install a tuner with an amp, the 
tuner needs to go between the output of the amp and the antenna.  One piece 
of equipment that I use all of the time is a Vectronics 512 noise bridge. 
This bridge will null out a pulsating noise at 50 ohms and I prefer using 
the noise bridge to tuning with a carrier.  I hook the noise bridge between 
my transceiver and my amp as the Vectronics will only take 300 watts through 
it.  By using the noise bridge, I have a longer time to play with the tuning 
controls to get the absolute best swr before I apply power.

Bob Tinney, K8LR, [log in to unmask]
Skype, bobtinn
We could certainly slow the aging process down if it had to work its way 
through Congress!