[Amps] Recommended Tuner for Clipperton L
km1h at jeremy.mv.com
Sun Feb 2 10:06:25 EST 2014
Most tuners have insufficient C for efficiency on 160 and some even for 80
and that includes the Dentrons.
For 160 a good 500pf is needed and 250-300 for 80.
David, that HB tuner you sold me before moving down to the swamplands would
have been ideal.
> On 2/1/2014 3:31 PM, qrv at kd4e.com wrote:
>> The Clipperton L, when tweaked to run efficiently, is
>> supposed to get 1200w+ out from 160-10m.
> Most tuners that cover the frequency range and the impedance ranges should
> work well. Remember, that thy all are derated when looking into a low
> impedance. So you need one that will operate at that power into that
> impedance with a reasonable SWR. Of course the 160 and 75 meter antennas
> are likely to have lower impedances and small frequency excursions bring
> with them, large swings in SWR.
> A tuner is a tuner is a tuner. It's just that to save on costs quite a few
> have limited power into low impedances as well as SWR limits.
> Those three parameters, Impedance, power, and SWR limitations where you
> wish to operate are paramount.
> Roger (K8RI)
>> Anything other than a Dentron MT-2000 or MT-3000 built
>> right & use a tapped inductor?
>> I know I'd need to add some capacitance for 160 & 80m.
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