I never owned a tuner of any type until I stopped using rigs with tube finals
and pi network output, and almost never need one with an amp using a pi-net
output. Of course a pi-net is a limited range tuner. I started looking for a
Drake MN2700 after a friend told me of using one for several years on a BC610
running full output AM on 160 meters feeding a full wave loop. He says it even
runs cool.
73, Dick W0EX
Jon Ogden wrote:
> >First you have to decide WHY you need a tuner; then the bands you need a
> >tuner for.
> >There is very little reason to use a tuner with many coax fed antennas.
>
> If you have an old tube rig or a tube amp, then no, you really don't need
> a tuner. You just tune the output network to match the impedance of the
> load (antenna).
>
> However, if you have a solid state rig or amp, then a tuner is ESSENTIAL
> if you are going to get any kind of power transfer.
>
> Also, tuners do help to cut down on harmonics as the do act as low pass
> filters.
>
> But I agree with you that a tuner will not make a bad antenna any better.
> A 5:1 SWR without a tuner is stil a 5:1 SWR on the output of the tuner.
> Your exciter just thinks the load is good.
>
> 73,
>
> Jon
> KE9NA
>
> ---------------------------------------------------------------------------
>
> Jon Ogden
>
> jono@webspun.com
>
> www.qsl.net/ke9na
>
> "A life lived in fear is a life half lived."
>
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