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October 27th 07, 02:46 AM posted to rec.radio.amateur.antenna

Owen Duffy Owen Duffy is offline

Owen Duffy is offline

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First recorded activity by RadioBanter: Dec 2006

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my SWR reading

charlie wrote in news:PpmdnSwlVffV47
:

....
As an example I have a ten metre dipole in my loft, some 25 feet
above ground. It resonates at 28.44 at the end of approx 10 metres
of 50 ohm coax, the SWR is 1.4:1 . The bandwidth at 2:1 is 28.25
-28.63. At 2.5:1 it is 28.160-28.760. This is before the ATU, after
the ATU the TX sees from 1:1 to 1.4:1 over the whole of ten metres.

You didn't mention the balun, it is significant.

Owen

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