La Crosse Technology 308-1451 User manual

1
Wireless Forecast Station
Model: 308-1451 | Instruction Manual
The wireless forecast station features radio-controlled time, dual time alarms, sunrise/sunset, barometric
pressure in numbers, and pressure graph with 12-hour history, forecast icons, indoor/outdoor temperature and
humidity with high and low alarms. Five forecast Icons based on temperature & air pressure readings suggest
what kind of weather to expect. Four clothing index icon suggest what to wear. This forecast station will never
keep you guessing on current or future weather conditions.
Forecast Station
Outdoor Temperature/Humidity Transmitter TX142TH

2
Table of Contents
Forecast Station 1
Outdoor Temperature/Humidity Transmitter TX142TH 1
Table of Contents 2
Features 3
Initial Setup 3
WWVB Radio-controlled Time 3
WWVB Reception Icon 4
WWVB Manual Signal Search 4
Function Buttons 4
Program Menu 5
WWVB Reception ON/OFF 5
Time Zone 5
DST Indicator ON/OFF 5
12/24-Hour Time Format 5
Fahrenheit/Celsius 6
Set Time 6
Set Calendar 6
City Selection: Sunrise/Sunset Times 6
Tide 7
Moon Phase 7
Comfort Statement 8
Alarms 8
Time Alarms 8
Set Time Alarm 1 8
Set Time Alarm 2 9
Snooze 9
Frost Alarm 9
Outdoor Temperature Alarms 9
Set Temperature Alarm 1 9
Set Temperature Alarms 2 and 3 9
Temperature Trend Indicators 9
Channel Selection and Auto-scroll 10
Pressure Readings 10
Absolute Barometric Pressure Number 10
Pressure Unit of Measurement 10
Pressure History 10
Pressure History Graph 10
Weather Forecast Icons 11
Tendency Indicators 11
Clothing Index 11
MIN/MAX Data 12
Low Battery Icon 12
Use Multiple Transmitters 12
Channel Scroll 12
Install Batteries in the Forecast Station 13
Install Batteries in the Outdoor Transmitter 13
Care and Maintenance 13
Position the Outdoor Transmitter 14
Position the Forecast Station 14
Specifications 14
Warranty Information 15
FCC Statement 16
Appendix A 18

3
Features
Atomic Clock: 7 Time Zones（AST, EST, CST, MST, PST, AKST, HAST
Calendar (Month/date, 2000-2099, Default Year 2010)
Time (hour/minute)
Indoor Temperature/Humidity
Wireless Outdoor Temperature/Humidity
°C/°F selectable
Alarm and snooze Function
Weather Forecast: Sunny, Slightly Cloudy, Cloudy, Rain or Snowy
History chart for Pressure
Low Battery indicator: Main unit and Transmitter
Temperature and humidity trends
High/Low Daily records
Comfort indicator
250 major US cities sunrise/sunset
Clothing index
•Low battery icon for forecast station and Transmitter
•Sits on desktop or tabletop
•308-1451 requires 3 "AA" Alkaline batteries (not included)
•TX14TH requires 2 "AA" Alkaline batteries (not included)
Initial Setup
Note: The forecast station will display the fisherman icon, lines etc., before batteries are installed. These items
are painted on the screen.
1. Insert 3 AA batteries (not included) into the forecast station (see Install Batteries in the Forecast Station).
The forecast station will light up and show, pressure, indoor temperature, humidity and channel 1.
2. Insert 2 new AA batteries into the transmitter, observing the correct polarity (see Install Batteries in the
Outdoor Transmitter).
Note: The CH switch is set to Channel 1 by default. Confirm channel 1 is selected.
3. Keep the transmitter 5-10 feet from the forecast station for 15 minutes to establish a good connection.
4. Within 3 minutes the forecast station will beep and the outdoor temperature will show. If the outdoor
temperature does not show after 3 minutes remove power from the transmitter and the forecast station for
60 seconds and start again from step 1.
5. If the outdoor temperature does not show up after a second attempt, please slide open the battery cover of
the outdoor transmitter to reveal the TX button. Push down on the TX button for 3 seconds to send a
wireless signal to the forecast station.
6. Hold the CH button on the forecast station to start the search for the transmitter signal.
7. For optimum 433 MHz transmission, the outdoor transmitter should be placed a distance of no more than
200 feet (60 meters, open air) from the forecast station.
Do Not Mix Old and New Batteries
Do Not Mix Alkaline, Standard, Lithium or Rechargeable Batteries
WWVB Radio-controlled Time
The NIST radio station, WWVB, is located in Ft. Collins, Colorado, 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,

4
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
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.
WWVB Manual Signal Search
Normal mode: Hold the + and - buttons together for 3 seconds to enter manual search.
Reception mode: Hold the + and - buttons together for 3 seconds to exit searching for the WWVB signal.
Note: In case the forecast station is not able to detect the WWVB-signal (disturbances, transmitting distance,
etc.); the time can be manually set by following the program menu.
Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet
(2 meters).
Within ferro-concrete rooms (basements, superstructures), the received signal is naturally weakened. In
extreme cases, please place the unit close to a window and/ or point its front or back towards the Fort
Collins, Colorado, transmitter.
During nighttime, the atmospheric disturbances are usually less severe and reception is possible in most
cases. A single daily reception is adequate to keep the accuracy deviation below 1 second.
Note: In case the forecast station is not able to detect the WWVB-signal (disturbances, transmitting distance,
etc.), the time and date can be manually set (see “program menu”).
Function Buttons

5
DST
On
Program Menu
The SET button will moves through the items in the program menu. The + or - button will change these values.
WWVB reception ON or OFF
Time Zone (Seven Time Zones)
Daylight Saving Indicator
12/24 hour time format
Fahrenheit/Celsius selection
Manual time set (Hour, Minutes, Seconds)
Calendar set (Year, Month, Date)
WWVB Time Reception
The WWVB time reception defaults to ON. To turn the WWVB reception OFF:
1. Hold the SET button for 5 seconds.
2. WWVB and ON will flash in the time display.
3. Press and release the + or - button to turn this OFF.
4. Confirm with the SET button and move to the Time Zone.
Time Zone
This station offers seven time zones listed in letter format (default is EST):
AST Atlantic Time
EST Eastern Time
CST Central Time
MST Mountain Time
PST Pacific Time
AKT Alaskan Time
HAT Hawaiian Time
1. EST will flash next to the date.
2. Press and release the + or - button to select a different Time Zone.
3. Confirm with the SET button and move to Daylight Saving Indicator.
DST Indicator
DST will default to the ON position as most of the country observes the DST change. The DST indicator should
stay on all year so the forecast station knows when to switch into or out of daylight saving
time. If you live in an area does not observe the DST change, switch this to the OFF
position.
1. DST and ON will flash in the time display.
2. Press and release the + or - button to turn DST to OFF.
3. Confirm with the SET button and move to 12/24 hour time format.
12/24 Hour Time Format
The time may be displayed in 12-hour or 24-hour format. Default is 12-hour time.
Note: When in 12-hour format AM or PM will show in front of the hour.
1. 12Hrwill flash in the time display.
2. Press and release the + or - button to select 24-hour time.
3. Confirm with the SET button and move to Fahrenheit/Celsius.
WWVB
On
TIME ZONE
EST
12Hr

6
Fahrenheit/Celsius
Select the temperature to display in Fahrenheit or Celsius. Default is Fahrenheit.
1. °F will flash in the time display.
2. Press and release the + or - button to select Celsius.
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 + or - button to select the hour.
3. Press and release the SET button to move to the minutes.
4. The minutes digit will flash.
5. Press and release the + or - button to set the minutes.
6. Press and release the SET button to move to the seconds.
7. The seconds digit will flash.
8. Press and release the + or - button to reset the seconds to zero.
9. Confirm with the SET button and move to Set Calendar.
Set Calendar
The date default of the forecast station is 1. 1. 2010.
To set the calendar:
1. The year will flash.
2. Press and release the + or - button to set the year (between
year 2010-2039).
3. Press the SET button again to confirm and to enter the month
setting.
4. The month will flash.
5. Press and release the + or - button to set the month.
6. Press the SET button again to confirm and enter the date setting.
7. The date will flash.
8. Press and release the + or - button to set the date.
9. Confirm all calendar settings with the SET button to confirm and exit the program menu.
Note: If no buttons are pressed for 20 seconds, set mode will time out and return to live display mode, reflecting
whatever adjustments were made before it timed out.
Note: Press the + or - button once to adjust by 1 unit or hold for fast scroll adjustment.
City Selection: Sunrise/sunset Times
Note: Preset City abbreviations are at the end of this guide. Choose the city closest to you in a north/south
direction. This will provide the most accurate sunrise/sunset times.
°F

7
USA
ANC
To select a city location: Select your country, state, and then city location.
1. Hold the CITY button for 5 seconds.
2. USA will flash next to the sunrise/sunset time.
3. Press and release the + or - button to select USA, CAN or MEX as your country.
4. Press the CITY button to confirm the country and select a state.
Note: When either Canada or Mexico is chosen, you will move directly to city selection.
5. The state will flash. Press and release the + or - button to select a state.
6. Press the CITY button to confirm the state and select a city.
7. The city location will flash.
8. Press and release the + or - button to select a city from the list at the end of this manual.
9. Press the CITY button to confirm and exit.
After a short calculation time, the forecast station shows the times for sunrise and sunset,
moon phase and lunar tide.
Note: When DST is in affect the forecast station will need to receive the WWVB time signal to make the
adjustment for DST. The WWVB signal includes an embedded bit to tell the station to adjust for DST. Until that
signal is received the first time, the sunrise/sunset times will be one hour off.
Tide
The tides reflected on this station are based on the ebb and neap tides of the lunar month. Not daily high and
low tides. When the forecast station states high tide, the tides will be higher than usual, etc.
When the sun, moon and earth are lined up at new and full phases of the moon, tides will be higher.
When the moon is at right angles to the sun and Earth at the first and last quarter, the tides are weaker.
Full & new moon = spring tide (TIDE HI)
Quarter = neap tide (TIDE LO)
Other = mean water level (TIDE MID)
Moon Phase
The LCD Moon phase is divided by 6 sections, showing a total of 12 phases of the moon.
Note: With the moon shown against a light colored background, the phases will show opposite to a paper
calendar. The segments that are highlighted portray the part of the moon that is lit. For instance, the moon will
be blank during a new moon and dark during a full moon.
New Moon occurs when the moon is between the earth and sun so the illuminated portion of the moon is on
the back side facing the sun and we cannot see it. After a new moon, the illuminated (visible) portion will
increase or wax until the full moon occurs.
AK

8
Full Moon occurs when the earth, moon and sun are in approximate alignment, with the moon and the sun
on opposite sides of the earth. The illuminated portion of the moon faces the earth, giving us complete
visibility of one side of the entire moon. After a full moon, the illuminated portion will decrease or wane until
the new moon occurs.
First Quarter and Last Quarter moons occur when the moon is at a 90 degree angle to the earth and sun.
So we see half of the moon illuminated and half is in shadow.
Waxing means growing or expanding illumination and happens after a new moon.
Waning means decreasing illumination and occurs after a full moon.
Crescent refers to the moon being less than half illuminated. Crescents can be waning or waxing.
Gibbous describes a moon phase when more than half is illuminated. Gibbous can be waxing or waning.
Comfort Statement
The comfort statement is based on the indoor humidity.
WET: Humidity is above 64%
COMFORTABLE: Humidity is between 43% and 64%
DRY: Humidity is below 42%
Alarms
There are 9 different alarms that may be individually set on this forecast station:
Time Alarm #1
Time Alarm #2
Frost Alarm
High Temperature Alarm CH #1
Low Temperature Alarm CH #1
With additional TX142TH transmitters:
High Temperature Alarm CH #2
Low Temperature Alarm CH #2
High Temperature Alarm CH #3
Low Temperature Alarm CH #3
Time Alarms
This forecast station has two individual time alarms: Press and release the ALARM button to enter Alarm mode.
Alarm 1 (A1) will show after the alarm time. Press and release the ALARM button again and Alarm 2 (A2) will
show after the alarm time.
Set Time Alarm 1
Press and release the ALARM button once to enter Alarm mode. The
Alarm Time and A1 will show.
1. HOUR: Hold the ALARM button for 3 seconds. The Hour will
flash. Use the + or - button to set the Hour. Be sure to set the Hour
correctly for AM or PM. Press and release the ALARM button once.
2. MINUTES: The Minutes will flash. Use the + or - button to set the
Minutes. Press and release the ALARM button once.
3. ACTIVATE: Press and release the ALARM button to enter the correct Alarm mode. Press and release the +
button and the alarm icon will appear (above the time, alarm 1, below the time, alarm 2). The number in
the bell icon indicates which alarm is active.
4. DEACTIVATE: Press and release the ALARM button to enter the correct Alarm mode. Press and release
the +button and the alarm icon(s) will disappear indicating alarm 1 and/or alarm 2 is off.

9
Set Time Alarm 2
Press and release the ALARM button twice to enter Alarm mode. The Alarm Time and A2 will show. Follow
steps 1-4 above to program alarm 2.
Snooze
Press the SNOOZE/LIGHT button on the top of the forecast station once to activate the snooze feature for 10
minutes when either alarm sounds. The alarm icon and the snooze icon Zz will flash when the snooze is
active. Press any button to deactivate the snooze feature.
Frost Alarm
The Frost Alarm when active will sound when the outdoor temperature drops to 34°F (1.1 °C).
1. ACTIVATE: Press and release the TEMP ALERT button to activate the Frost Alarm on all
channels (when multiple transmitters in use). The Frost Alarm icon will appear in the outdoor temperature
area when active.
2. DEACTIVATE: Press and release the TEMP ALERT button until the Frost Alarm icon no longer shows.
Outdoor Temperature Alarms
A high and low outdoor temperature alarm may be set on the forecast station.
Note: When multiple transmitters are connected on different channels, a high and/or low temperature alarms
may be set for each channel.
Set Temperature Alarm Channel 1
1. Press and release the CH button to select channel 1 (when multiple transmitters in use).
2. Hold the TEMP ALERT button until the High Temp Alert icon appears and the temperature
will flash. Use the + or - button to select your High Temp alarm value. Press and release the
SET button to move to the Low Temp alarm.
3. The Low Temp Alert icon will appear and the temperature will flash. Use the + or - button to
select your Low Temp alarm value. Press and release the SET button to confirm and exit to
current temperature.
4. The Temp Alert icon will show in the outdoor temperature area when a temperature alarm is active.
When the temperature alarm sounds, the Temp Alert icon and the temperature value will flash. Press any
button to silence the alarm temporarily.
Set Temperature Alarm Channel 2 & 3
Use the CH button to select the channel. Follow steps 2-4 above to set temperature alarms on other channels.
DEACTIVATE TEMPERATURE ALARM: Press and release the TEMP ALERT button 3 times to deactivate all
temperature alarms. The alert icons will disappear.
Temperature Trend Indicators
The indoor and outdoor temperature trend indicators will update every 30 minutes or less. These trends
represent temperature changes over the past three hours.
Temperature rose more than 2°F /1°C in the past three hours
Temperature has not changed more than 2°F /1°C in the past three hours
Temperature fell more than 2°F /1°C in the past three hours

10
The temperature trend indicators are shown next to the indoor temperature and outdoor temperature readings.
Channel Selection and Auto-scroll
Channels: The forecast station can receive up to 3 outdoor transmitters. Extra TX142TH sensors may be
found online or at your retailer to monitor remote temperature in up to 3 locations within a 200 ft. wireless
range of the forecast station. When more than one transmitter is used, set each transmitter to a different
channel number then hold the CH button for 5 second to search for the transmitters.
View Channels: Press the CH button to select Ch1, Ch2, Ch3 or auto-channel scroll.
Auto scroll-channel will show a circling arrow below the channel number and will rotate
through each channel approximately every 5-8 seconds
Pressure Readings
Absolute Barometric Pressure Number
Barometric Pressure is read by the forecast station. The numeric pressure value adjusts automatically as the
forecast station reads changes in air pressure. Since this number is absolute pressure, it may not be the same
as a local reporting station that reads in relative pressure.
Note: The number cannot be calibrated.
Absolute Pressure is measured in a vacuum without the influences of terrain, weather, water, foliage and
elevation. The air pressure it would be consistent at every elevation and decrease as it went higher.
Relative Pressure is a combination of air pressure and altitude. Relative air pressure will make readings in
local areas relative to each other to allow for proper forecasting.
Pressure Unit of Measurement (InHg or hPa)
Hold the HISTORY button for 5 seconds to switch from InHg (inches or mercury) or hPa (Hectopascal) for the
numeric pressure display and the pressure graph.
Inches of Mercury is common for weather reports and aviation in the United States.
Hectopascal is equivalent to millibar and commonly used to measure atmospheric pressure outside the
United States.
Pressure History
Press and release the HISTORY button to view the past 12-hours of numeric pressure
history.
In the small box to the right of the numeric pressure a number from 0 to -12 will appear.
0 is current pressure. -1 through -12 reflects the history in one-hour increments.
Note: The history graph and forecast icons will not change when you view pressure history.
Pressure History Graph
The bar chart indicates the air pressure history trend over the last 12 hours in 5 steps, 0h, -1h, -2h, -3h, -6h & -
12h.
The columns represent the change in ”InHg” or “hPa” readings at
specific times.
The “0” in the middle of this scale is equal to the current pressure and
each bar represents how high or low in InHg or hPa the past pressure
was compared to the current pressure.
Read the graph from left to right. If the bars are rising, it means that the
weather is getting better due to the increase of air pressure. If the bars go down, it means the air pressure has
dropped and the weather is expected to get worse from the present time (0h).
Note: The bar graph will scroll continually to prevent LCD burnout.