The internal tuner is MUCH quieter if that is a factor (mouse vs elephant).
It also provides a slightly better match (not quite the same component
values) and seems faster than the KAT500 for tuning (I haven't measured it).
The internal tuner has no issues with my EDZ dipole (two opposing 5/8 at
75M) on any band; the KAT500 has troubles on 75 and 160 (antenna is too
reactive).
If you EVER plan on taking the K3 anywhere, having an internal tuner means
you can operate without having to take the KAT500 et al as well.
73,
Rick wa6nhc
> -----Original Message-----
> From: Jim Brown
>
> On 1/24/2014 3:52 PM, tom armour wrote:
> > Is there anything I'll be missing with the KAT500 vs the internal tuner
> other than portability?
>
> QRP autotune -- the KAT500 is optimized for high power, and doesn't
> autotune very well below about 10W.
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