Hi
     Over the years it has been my experience that external antenna tuners
can cover a greater mismatch between the antenna and the radio than internal
tuners. However, it may be that modern built in antenna tuners are able to
be just as robust as external ones.

God bless,
Mark

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-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Jim Gammon
Sent: Thursday, July 19, 2012 10:11 AM
To: [log in to unmask]
Subject: External tuner vs internal tuner?

Steve, what advantage is there to using an external auto tuner 
over the internal tuner in the TS-480? I have the 100 w model and 
really think it's a great rig.  That question about the tuner has 
nagged at me though.  I have been wondering if it would be 
worthwhile to get something like an MFJ external tuner, or is 
that simply redundant because of the existing internal one.  I 
have occasionally used the rig running low power when I had 
terrible SWR and still worked stations.  Jim WA6EKS