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Model: 308-146/308146W                       www.lacrossetechnology.com/support                          10 

 

 

To connect multiple remote transmitters to the forecast station: 

1.  Remove the battery cover from all the transmitters (Leave battery covers off until all 

transmitters are received by the forecast station). 

2.  Set the 

first

 outdoor transmitter to 

Channel 1

 and insert 2-AA batteries.  

3.  Set the 

second

 outdoor transmitter to 

Channel 2

 and insert 2-AA batteries. 

4.  Set the 

third

 outdoor transmitter to 

Channel 3

 and insert 2-AA batteries. 

5.  Press and hold CH button on the forecast station until a beep sounds. The forecast 

station will search for all outdoor transmitters. 

6.  Press the TX button on each outdoor transmitter to transmit RF signal.

 

 

7.  When RF connection is established, the respective temperature & humidity for each of 

the selected channels numbers will appear on the main unit.  

8.  Allow the transmitters and the forecast station to stay 5-10 feet apart for 15 minutes to 

establish a solid connection. 

9.  Install the battery covers on each sensor. 
10. 

After 15 minutes place the remote transmitters in appropriate locations (see “position the 
outdoor transmitter”). 

11.  Press and release the CH button to view channel 1, 2 or 3 on the forecast station when multiple 

transmitters are used. 

Note

: You cannot change channels if only one transmitter is connected. 

 

Channel Scroll 

 
1.  Press and release the CH button until the word 

AUTO

 appears in the outdoor data area. The forecast 

station will automatically rotate through the channels for all connected transmitters.   

2.  Press and release the CH button to lock the forecast station into one channel. Then view channels 

individually with a press of the CH button. 

 

WWVB Radio-controlled Time 

 
The NIST radio station, WWVB, is located in Ft. Collins, and transmits the exact time signal continuously 
throughout the United States at 60 kHz. The signal can be received up to 2,000 miles away through the 
internal antenna in the forecast station. 

However, due to the nature of the Earth’s Ionosphere, reception is 

very limited during daylight hours. The forecast station will search for a signal every night when reception 
is best. The WWVB radio station derives its signal from the NIST Atomic Clock in Boulder, Colorado. A 
team of atomic physicists continually measures every second of every day to an accuracy of ten billionths 
of a second a day. These physicists have created an international standard, measuring a second as 
9,192,631,770 vibrations of a Cesium 133 atom in a vacuum. This atomic clock regulates the WWVB 
transmitter. 
 
 WWVB Reception Icon 
 

 The WWVB time reception icon with full signal strength will appear on screen in front of the 
date when the reception of time is successful.  
 
 

 

The tower icon will show solid when the forecast station has received the WWVB signal. 

 

No tower icon is shown. The forecast station was unable to receive a signal at this time. 

 

Reposition the forecast station for better signal reception or try again at bedtime. 

 

The forecast station will start searching at UTC: 07:00 and if no reception on the first attempt they will 
try again at 08:00, 09:00 and 10:00. Each attempt will be at least 2 minutes and the most will be 10 
minutes.  

 

If there is no signal or too much interference the receiver will only be on for 2 minutes. 

 

If the signal is good it may catch a signal in ABOUT 2-3 minutes.   

 

If the signal is marginal it will try to catch a signal for up to 10 minutes.  

IMPORTANT:

  When operating on a/c power, the backlight and USB charge port will turn off while the 

forecast station searches for the WWVB signal, to avoid interference. Both features will return after 
the 2-10 minute search which occurs during the late night or early morning hours. 

 

Note:

 In case the forecast station is not able to detect the WWVB-signal (disturbances, transmitting 

distance, etc.); the time may be manually set. 

Summary of Contents for 308-146

Page 1: ...batteries not included into the outdoor transmitter Observe the correct polarity The red LED will flash when transmitting Do Not Mix Old and New Batteries Do Not Mix Alkaline Standard Lithium or Recha...

Page 2: ...Fahrenheit Celsius 6 Alarm Set 7 Deactivate Alarm 7 Snooze Alarm 7 USB Charge Port 7 Backlight 7 A C Power Adapter 8 Batteries 8 Weather Forecast Icon 8 Min Max Temperature Data 8 View Min Max 8 Rese...

Page 3: ...g the AC adapter with ON OFF option LCD light dimmer for nighttime use Low battery icon for forecast station and sensor Sits on desktop or tabletop 3 AA Alkaline batteries not included OR optional 5 0...

Page 4: ...shows on the forecast station move the outdoor transmitter outside to a shaded location within range of the forecast station Install Batteries in the TX14TH Transmitter 1 Slide the battery cover down...

Page 5: ...arch for remote transmitter LIGHT HI LO HOLD ON OFF Dim backlight for night time Turn continuous backlight ON or OFF a c adapter LIGHT SNOOZE top Activates backlight when using only batteries Trigger...

Page 6: ...F button to select 24 hour time 3 Confirm with the SET button and move to Set Time Set Time To set the time manually 1 The hour digit will flash 2 Press and release the RCC or C F button to select th...

Page 7: ...orecast station is plugged into a power outlet with the included 5V AC adapter Note This is a power output charging port It does not supply power to the forecast station Connect your external device s...

Page 8: ...tter or worse and not necessarily sunny or rainy as each icon indicates For example if the current weather is cloudy and the rainy icon is displayed it does not mean that the product is faulty because...

Page 9: ...oint Temperature Dew point is the saturation point of the air or the temperature to which the air has to be cooled in order to create condensation The higher the dew points the higher the moisture con...

Page 10: ...United States at 60 kHz The signal can be received up to 2 000 miles away through the internal antenna in the forecast station However due to the nature of the Earth s Ionosphere reception is very li...

Page 11: ...on may change without prior notice Improper use or unauthorized opening of housing will void the warranty If the forecast station does not work properly change the batteries and or check the a c cord...

Page 12: ...the front of the back facing Ft Collins Colorado Specifications Indoor Temperature Range 32 F to 122 F 0 C to 50 C Humidity Range 19 97 RH Interval About every 30 seconds Outdoor Temperature Range 40...

Page 13: ...e FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 the device must accept any interference received including interference that may...

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