Operation
12
VSWR
VSWR measures the relation between forward and reflected average power. The
Bird Wideband Power Sensor calculates the VSWR from the Forward and
Reflected Average Power measurements. Rho and Return Loss are also the same
measurement, but in different units:
Rho
VSWR
Return Loss (dB)
The health of the feedline and antenna systems can be monitored using VSWR
measurement under full power operating conditions. High VSWR is an indicator
of feed line damage, overtightened cable or feed line clamps, or antenna
changes/damage due to weather conditions, icing, or structural damage to the
tower.
Rho
P
R
P
F
=
VSWR
1
+
1
–
------------
=
ReturnLoss dB
10
P
R
P
F
log
=
Содержание MRI3T
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