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.
Carl
KM1H
On 2/1/2014 3:31 PM, qrv@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.
73
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.
Thanks!
David
---
This email is free from viruses and malware because avast! Antivirus
protection is active.
http://www.avast.com
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4259 / Virus Database: 3684/7053 - Release Date: 02/02/14
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|