"Tuning accuracy: VSWR 1.5:1 or less Insertion loss: Less than 1.0 dB(after tuning)."
Accuracy?
What 'accuracy' are they talking about? the only accuracy I can think of is in the metering, or maybe the ability of the one doing the tuning. Where else would there be any 'accuracy'?
Insertion loss?
Okay, but a 'loss' as compared to what? To a 'no tuner required' situation? I would think that removing it would 'solve' a 1 dB insertion loss. If it means the 'by-pass' circuitry, then a 1 dB loss isn't good at all.
I'm afraid is sounds like typical advertising. Some one goes through a description and picks the "sounds good" statements to use out of context?
Why does that 24 foot antenna work in some places and not others? The reason is in the 'tuning' and how the thing radiates. 'Tuning' is NOT about just having a low SWR. A dummy load has a very nice SWR but doesn't radiate very well/much. There's no 'magic' length for an antenna that will work well on any frequency. It doesn't matter if that antenna consists of a wadded up ball of wire you found some where, or if it's a high dollar antenna purchased from some manufacturer. It might work very well on one band and maybe that band's harmonics, but it won't work as "well" on some bands. How do you define "works well"? All antennas are frequency related, which translates to lengths that work well for a particular frequency/band. One 'work around' for that is by loading the antenna to reduce it's length. ANY loading is only for convenience, it won't be as good as a "full sized" antenna. That means that if you don't have the room for a "full sized" antenna, whatever you use just isn't going to be as 'good' as one. Getting the thing 'close' does make a difference though. sometimes, that 'close' just isn't going to be 'close enough.
Terrible way of trying to explain something, ain't it?
- 'Doc
