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The default value of SWR threshold is 2.0:1. The following example shows setting the SWR
threshold to 1.7:1.
Antenna Selection:
Press the
Ant
button momentarily to toggle which antenna port is
currently active. The
ANT 2
LED will light when Antenna 2 is selected, and is off when
Antenna 1 is selected. When toggling the antenna selection, the previous tuning settings for the
newly selected antenna are also recalled. This is useful when comparing antenna performance on
the same frequency.
Transmitting and Receiving
During receive operation, only the antenna and bypass indicator LEDs are lit on the AT-
600Pro. During transmit, the forward RF power level is displayed on the PWR bargraph, and the
SWR is displayed on the SWR bargraph.
When reading the SWR bargraph, an illuminated LED on the graph means “The SWR is at
least this much.” In other words, if the 1.3 LED is lit, it means that the SWR is between 1.3 and
1.5:1. No LEDs lit means the SWR is less than 1.1:1.
Summary of Contents for AT-600Pro
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