>
>Jim,
>
>Lots of possible issues on this one.
>.......
>.......>Lastly, many hams think that if they tune their tuner, that their
antenna
>is now a 50 Ohm antenna. WRONG! The only thing a tuner does is to
>essentially act as a buffer between your exciter and your load. It will
>not improve a bad antenna. If the antenna has a 15:1 VSWR without the
>tuner, it still has it with the tuner. You just don't see it.
>
? Thick sliced bologna. . . If a 15 to one / 750 ohm antenna is
connected to a matching network/antenna tuner, the 750-ohms is
transformed to 50-ohms +/- j0 ohms.
>........I wouldn't worry about your variances in SWR readings. It's
>really just to give you an idea of what kind of power is coming back at
>your rig. Personally, I'd match it so that the PA sees the best possible
>match. This means that your tuner and whatever you have on the output of
>your PA are optimally matched. Who cares what the SWR meter in the tuner
>sees. The output of the tuner is going to have a high VSWR anyhow!
>Matching this way will cause you to put the maximum available power into
>the tuner instead of reflecting 2.5% of it back to the amp.
>
? However, without a tuner, the 2.5% gets reflected back to the antenna.
>
- later, Jon.
- Rich..., 805.386.3734, www.vcnet.com/measures.
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