Bird Technologies 4308 - Manual (Page 20)

2. Rotate the element so that the arrow points in the direction of
power flow.
If coaxial cables other than 50 ohm impedance are used, a mismatch will occur which
may cause serious inaccuracies in the readings.
To Load To Transmitter
To Load To Transmitter
Forward Power Measurement
Reflected Power Measurement
Figure
3
Element
Direction
Bird Model 4308 Thruline Wattmeter
&