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Long Loop (80m) gives "high swr" warnings on several bands - why?


Clive
 

Hi folks, after moving to FINLAND where its very cold now, I put up a
longwire loop of approx 84 metres of wire. Its fed with 300-ohms
radioshack line.

The tuner WON'T tune this on the lower bands (but its fantastic on
20m.)

I'm going to try shortening the loop slightly to around 81m, but
before that has anyone got any advice? Why is the SWR so high for the
tuner?

Antenna is about 5m up, and the feedline is about 4.5m.

Ground here is solid granite rock... hence the loop!

Cheers
Clve4

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