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A balanced antenna is one that
creates the same current in both conductors of the feeder
uses a balun
has elemnts cut in the ratio of 1/3 : 2/3
uses a balanced ATU
When feeding a dipole antenna
No balun is required between the antenna and coax feeder
A 1:1 balun is required between the antenna and coax feeder
A 4:1 balun is required between the antenna and coax feeder
A 9:1 balun is required between the antenna and coax feeder
An SWR meter:
Shows the signal strength of the transmitted signal
shows a high reflected power when the antenna is properly matched
has to have 2 meters. One to show the forward power and one to show the reflected power
Shows if there a correct match between the antenna and the transmitter
A high SWR measured at the transmitter shows:
that there is a problem with the antenna
that there is a problem with the feeder
that there is a problem with either the feeder or the antenna
that there is a problem with the transmitter
A dummy load consists of:
a 50 Ohm resistor
a 50 Ohm resistor in a screened container
a 50 uF capacitor and inductor
a 50 uF capacitor and inductor in a screened container