Hello,

Forget reading books! Look at the aerial being used and the feeder
connecting it to your radio. Calculate the difference in impedance. Simple
as that.

"VE3PMK" wrote in message
...
So in as much as I realise the importance of using a balun when feeding
certain antennas, what factors determine what ratio is best suited to the
application? Is there a general rule?
(That is to say a long-wire is best fed with 'x:1' where a loop antenna is
fed with 'y:1'?)
I typically connect a center fed dipole is with a 1:1, but what
configuration calls for the 4:1, or even the 9:1 ??


(reply here please, it'll probably make an informative reading for most)

Thanks,
Pat