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T20 User Interface Definition V2-0
2. Receive
In receive mode, the radio has detected activity on the current selected channel and that activity
will be heard by the user on the speaker.
3. Transmit
In transmit mode, any audio picked up by the microphone will be broadcast on the current
selected channel. Transmit mode is entered one of 2 ways:
a. When the user presses the PTT button. The radio will stay in transmit mode as long as the PTT
button is depressed or until 180 seconds has elapsed. (Releasing the PTT will restart the 180
second timeout.)
b. If VOX is turned on, any audio detected by the microphone will be broadcast.
4. Scan
In scan mode, the radio will scan all channels (1 – 22) for activity.
5. Weather
In weather mode, the radio will monitor a user selected NOAA weather channel (1-10). If weather
alerts are turned on, the radio will periodically check for a weather alert tone (on the selected
channel) and automatically switch to Weather mode if an alert tone is detected.
BATTERY LEVEL INDICATION
The radio will have a BATTERY LEVEL METER that shows the battery power level. The greater the number
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of bars visible, the stronger the battery level.
o 3 Bars = Full Battery
o 2 Bars = 2/3 Battery
o 1 Bar = 1/3 Battery
o No bar = battery low
The BATTERY LEVEL METER is visible at all times while the radio is powered on.
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(Actual trigger voltages for these 4 levels will be defined in the T200 technical specification.)
Midland Radio Corporation
(Flashing)
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