ATX Installation and User’s Guide
Transmitting “TRNS”
When flashing, indicates the ATX is transmitting an AirTime signal
Receiving “RECV”
When flashing, indicates the ATX is in receiving mode listening for an AirTime signal. (used in Repeater mode)
Daylight Savings Time 
When illuminated, indicates that the ATX is in Daylight Savings Time.
Reception strength
In Master mode indicates the strength of the WWVB signal when receiving.
In Repeater mode displays for 5 seconds indicating the strength of the signal from the Master when a signal is received.
Low battery 
Indicates the batteries should be replaced.
Link “LINK”
Indicates data reception from another AirTime transmitter was successful within the last 24 hours. (Used in Repeater mode)
WWVB receiving 
When steady, indicates successful reception of the WWVB signal. When scrolling, the ATX is listening for a WWVB signal.
Other Indicator - Flashing Red LED
This indicates that a Repeater ATX failed to receive the signal from a Master ATX Transceiver. Press the Reset button or move the ATX to a location that is closer to the Master ATX.
Mode Selection
The ATX can operate in either of two modes, Master or Repeater. The most common mode is “Master”. In Master mode, the ATX receives and synchronizes with the WWVB signal. It then transmits the signal to
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