Ch-899 Chouchin Radio Controlled Clock Instructions Page
On many CH-899 clocks:
Important: When batteries are inserted, the clock will not display the correct time immediately. Instead, the hands (on analog models) will spin to 12:00 or 4:00, or the digital display will show
--:--or12:00. This is normal.
The CH-899 Chouchin is a fantastic clock when it locks onto the signal. The biggest "instruction" most people miss is patience. Do not stand there watching it for 10 minutes. Set it at 12:00, put it near a window before bed, and wake up to perfect time.
If you have tried all of the above and it still won't sync, you may have a dead radio receiver. However, in 90% of cases, the problem is interference from a cheap phone charger or a metal wall plate.
Have a tip for CH-899 owners? Let us know in the comments below!
The CH-899 Chouchin radio-controlled clock is a precision timekeeping device designed to synchronize automatically with long-wave radio signals (such as the MSF in the UK or WWVB in the US) to maintain accuracy within one second in ten million years. Below are the comprehensive setup and operation instructions for this model. 1. Initial Setup and Automatic Synchronization
To begin, locate the controls on the back of the clock movement.
Select Settings: Before inserting the battery, set the Time Zone switch to your region (P for Pacific, M for Mountain, C for Central, E for Eastern). Ensure the DST (Daylight Savings Time) switch is in your preferred position.
Power On: Insert one fresh 1.5V AA Alkaline battery, observing the correct +/- polarity.
Auto-Calibration: Once powered, the hands will quickly advance and typically stop at the 12:00 position. The clock will then begin searching for the radio signal. This process can take between 3 to 10 minutes, though in some environments, it may take up to 24 hours to find a stable connection. 2. Manual Time Setting ch-899 chouchin radio controlled clock instructions
If a radio signal is unavailable or you prefer a manual override:
Enter Manual Mode: Press and hold the M. SET button for approximately 3 seconds.
Adjust Time: Hold the button to make the hands advance quickly. For fine adjustments, a single press will advance the time by one minute.
Exit: Release the button once the correct time is reached. If no buttons are pressed for about 7 to 10 seconds, the clock will exit manual mode and resume normal operation. 3. Forced Signal Reception (REC)
If the clock is displaying the incorrect time, you can manually trigger a search for the atomic signal:
Trigger Search: Press and hold the REC button for at least 3 seconds.
Scanning: The hands will return to 12:00 while the clock attempts to receive the signal. If successful, the hands will automatically adjust to the correct time. 4. Reset and Troubleshooting
If the clock becomes unresponsive or fails to sync, a factory restart may be necessary:
Resetting: Remove the battery for at least 15 minutes to clear the memory. Some variants may allow resetting by short-circuiting the pins in the upper-left corner of the movement. On many CH-899 clocks:
Placement: For the best signal, place the clock near an exterior wall or window. Keep it at least 2 meters away from electronic interference like TVs or computers.
Low Battery Indicator: If the second hand begins advancing in 2-second increments, the battery is low and should be replaced immediately.
How do I set or reset my atomic clock? - La Crosse Technology
Chouchin CH-899 is a radio-controlled (atomic) clock movement commonly found in wall clocks. It is designed to automatically synchronize with the WWVB radio signal from Fort Collins, Colorado. School Fix Initial Setup (Automatic Mode) Select Time Zone & DST : On the back of the movement, set the Time Zone switch
to your local zone (P = Pacific, M = Mountain, C = Central, E = Eastern). Enable DST : Ensure the DST switch
if you want the clock to adjust automatically for Daylight Saving Time. Insert Battery : Place one fresh 1.5V AA Alkaline battery into the compartment, noting the correct polarity (+/-). Wait for Sync
: After the battery is inserted, the hands will quickly advance and stop at . The clock will then begin searching for the radio signal.
: Synchronization can take as little as 3–5 minutes but may take several hours or even overnight depending on interference.
: For the best signal, place the clock near a window facing Colorado during the setup. TLC Electrical Supplies Manual Time Setting Important: When batteries are inserted, the clock will
If you are outside the signal range or need to set the time manually:
Disclaimer: While these instructions are based on common CH-899 functions, always refer to your specific product manual for model-specific details.
Q: Does the CH-899 work worldwide? A: No. It is tuned to a specific frequency (60 kHz for US, 77.5 kHz for EU). Using a US model in Japan will not sync.
Q: Can I disable the radio feature? A: Yes. Remove batteries, wait 30 seconds, reinsert, and press the MANUAL button before the first auto-sync attempt. This puts the clock in free-run mode.
Q: Why does my clock show 12:00 after battery change? A: It’s searching for the signal. Give it up to 24 hours in a good location.
Q: Where is the RESET button? A: On the back – a small hole labeled “RESET”. Use a paperclip to press it for 5 seconds.
The CH-899 combines traditional analog or digital timekeeping with modern radio-controlled (RC) technology. It automatically synchronizes with a government radio time signal (like WWVB in the US, DCF77 in Europe, or MSF in the UK) to ensure perfect accuracy.
Solutions: