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Cecil Moore wrote: Tom Horne wrote: I'm honestly looking for advice that is based on experience rather than a particular theory of what should work. I want to know what does work from real world users. What are you limitations? Supports? Size? Power? As far as Autotuners, especially the Motorola based, Stepped, Binary, Lumped, Incremental Component Tuners, (SEA, SGC, etc) they have some inherent problems that are a function of the design criteria. First, they can't tune ANYWHERE (50 Khz or more) near the natural 1/2 wave point of the attached antenna, where impedances head for infinity. Second, they MUST have a very good RF Ground to work against, in order to function properly. Don't even "think" the word "Counterpoise", but do demand the phrase, LOW Impedance RF Ground, when engineering an effective use of such an Autotuner. There have been some, that have used these type tuners, as a Tuned Element in the center of a Dipole, but again, these are severely compromised antenna systems, and not likely to out preform a Dipole or Inverted Vee, Tuned for the Operating Frequency. -- Bruce in alaska add path after fast to reply |
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