Hi,
We went to an External Tuner because we could get a better match.
Our receive also improved.
We have an Icom706. I do not remember which one. I think it is the last way they made.
Colleen, N8TNV;



----- Original Message -----
From: Steve <[log in to unmask]>
To:  [log in to unmask]
Date: Friday, Jul 20, 2012 02:02:42 PM
Subject: Re: External tuner vs internal tuner?

>
>
> Jim,
> 
> Typically, the internal tuner won't match much more than a 3:1 or maybe at 
> the outside 6:1 SWR, the older internal tuners on the TS-850 would match 
> 10:1.  Now, some of that might depend on your reactances, but since they 
> have small caps, they don't have the capabilities of external tuners.
> 
> Then, let's say you have a couple different scenarios.  First, let's say you 
> want to be real efficient and feed your wire antenna with open-wire.  You 
> could try running it through a balun, but it would probably be easier to 
> have an external tuner with the balanced feed point on it.
> 
> The second scenario: you want to run a linear amp.  You'll then definitely 
> need an external tuner.
> 
> 
> ----- Original Message ----- 
> From: Jim Gammon
> To: [log in to unmask]
> Sent: Thursday, July 19, 2012 1:10 PM
> 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