I have that flag pole and use the KAT500 to tune it. I've used several other tuners in the past too, mostly old remote military models. Power offers no issues... if the antenna tunes at 5 or 100 watts, it will tune at 500 watts.
One thing I always do (at least I've learned something important from this) is to plot the Real and Imaginary part of the antenna as a function of frequency...that the tuner will see (either remote at the antenna or in the radio house). You can do that with a simple impedance bridge. Then I plot the transfer function to 50 ohms real and overlay the transfer function space of the tuner. That easily tells you where the tuner will have trouble matching the antenna and where it (theoretically) will work just fine. This will answer all of your questions. It may also tell you where you need work on your antenna (e.g. If you plot the impedance of the antenna as you lay radials, it will asymptotically approach a limiting value with infinite radials. When you don't see it move, more radials probably isn't worth the extra work). Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ/ PJ4HZ Owner - Operator Big Signal Ranch Staunton, Illinois email: [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Javier Campos Sent: Friday, July 26, 2013 11:36 PM To: [email protected] Subject: [Elecraft] KAT-500 and 30' Flag Pole Antenna Users? Looking for any feedback on the use of the KAT-500 with a 30' Flag Pole (Zero-Five) Antennas under 100 watts and if an Amp is used, that would be nice to get some feedback. I've moved into an HOA zone and will be putting up a Zero-Five 30 foot flag pole and looking to get a tuner as I have an Acom-1011 Amp (want to switch to the KPA-500). The antenna will use a 4:1 UNUN. Let me know how the KAT-500 and if you have the KPA-500 (or any amp for that matter) works with the flag pole etc. I plan on being active on all bands 80-10 Thanks Javier NM6E/5 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
