I doubt you'd notice any difference.
I've made loss measurements and balance measurements on my Palstar
BT1500A balanced tuner with a range of different load impedances, and
compared them to my unbalanced TenTec 238 equipped with a 4:1 voltage
balun or a 1:1 current balun. Overall the TenTec 238 with 1:1 current
balun was the best, but differences were very small and would be
indistinguishable in normal operation.
QST compared the Johnson Matchbox to three more modern balanced tuners
in September 2004. The Matchbox had a quite restricted matching range
compared to the others, and it was marginally less efficient taken
across all the bands and load impedances tested.
73,
Steve G3TXQ
On 13/07/2011 18:55, Edward Sylvester wrote:
> I have a 130' Ladder Line-fed Dipole up 70' (600 ohm). I feed it through a
> nice Palstar Auto Tuner with 4:1 Balun. All my other antennas are
> coaxial-fed and near resonance. My amp and rig have a built-in tuners anyway,
> so tuning them is not a problem.
>
> Since I only use this tuner for the ladderline-fed dipole, how much of an
> advanatge might I see if I were to go with a "Balanced Tuner?" I know the
> 4:1 balun on the present tuner gets somewhat hot/lossy, but am I likely to
> notice the difference if I switch?
>
> Thanks,
> Ed NI6S
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