The VSWR LED bar signals the tuning of the antenna. The standing wave ratio should be
better than 1:2, and there should be only green or at least orange LED lights active. Tab. 6
lists the LED colors.
VSWR LEDs
Color
Value
(VSWR)
Quality of Standing Wave Ratio
LED V1
green
1
optimal
LED V2
green
1,2
very good
LED V3
orange
1,5
good
LED V4
orange
1,7
still acceptable
LED V5
red
2
poor, reading efficiency reduced. Antenna
needs to be tuned
LED V6
red
2,5
poor, reading efficiency reduced. Antenna
needs to be tuned
LED V7
red
3
poor, reading efficiency reduced. Antenna
needs to be tuned
LED V8
red
INF
poor, reading efficiency reduced. Antenna
needs to be tuned
Tab. 6: VSWR LED Bar
Technical Documentation metraTec QuasarLR
Page 15 of 19
