I haven't checked many external tuners, my LDG AT200 pro doesn't seem to 
lose much power on the output, maybe 3% or so as checked with my TW-1 but I 
checked my TS-2000 and my TS-570 when I had that radio and both seemed to 
lose about 15% with the internal tuners. I haven't really noticed with the 
TS-450 I have for a backup radio but as I recall, it's the same or close. 
Not noticeable I'm sure on the air but with the current antenna I don't even 
need a tuner unless I go away from where I tuned it on 75 meters.
----- Original Message ----- 
From: "Howard Kaufman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, July 26, 2012 10:39 PM
Subject: Re: External tuner vs internal tuner?


>I noticed that the internal tuner in the 480 absorbs maybe 15 per cent of
> the power, while the external tuner takes maybe 5 per cent loss.