Oregon Scientific WS6762 Mode D'emploi page 34

outdoor sensor is not established automatically, this can be done manually as follows:

Press the channel button (CH) (37) short until the desired channel (27) is displayed, then press and hold the CH button until the radio waves icon flashes.

Then press the RESET button (43) of the sensor. Weather station outdoor temperature (25) and humidity(outdoor) (22) will be displayed.
As soon as the weather station has established a connection with the outdoor sensor it automatically begins to receive the DCF radio signal. This process takes
several minutes and is indicated by a flashing radio tower symbol (5).
When the DCF radio signal is being successfully received, the radio tower symbol is shown permanently in the display. If at the time of putting the device into
operation it is not possible to synchronize with the atomic clock, you can also do the clock adjustments manually ("Setting the 12/24 hour mode /°C /°F/ hPa/
inHg/time zone /time/date/language manually").
Radio signal (DCF):
The DCF signal (time signal transmitter) consists of time pulses emitted by one of the most accurate clocks in the world close to Frankfurt /Main, Germany.
In ideal conditions, your weather station can pick up this signal over a distance of up to approx. 2000 km around Frankfurt / Main. Reception of the radio signal
generally takes approx. 3–10 minutes.
Reception can be considerably impaired by obstacles (e.g. concrete walls) or sources of interference (e.g. other electrical devices). In the event of reception
problems, change the position of the weather station (e.g. to somewhere near a window).
Operation
Receiving the DCF radio time signal
After a connection with the outdoor sensor is established or 3 minutes after the batteries are installed, the weather station automatically begins to search for the
DCF radio signal. The search is shown in the LC display by the radio tower symbol (5) flashing.