The CH899 Chouchin radio-controlled clock is designed to synchronize with atomic time signals (like WWVB in the US or MSF in the UK) to provide near-perfect accuracy. Quick Setup Guide (Automatic Setting)

For the easiest setup, let the clock do the work. The radio-controlled movement is programmed to find the signal automatically once powered.

Select Your Time Zone: Locate the switch on the back and move it to your region: P (Pacific), M (Mountain), C (Central), or E (Eastern).

Toggle DST: Ensure the Daylight Savings Time (DST) switch is set to ON if you want it to adjust automatically twice a year.

Insert Battery: Place one fresh 1.5V AA alkaline battery into the compartment, matching the polarity (+/-).

Wait for 12:00: The hands will advance quickly and stop at the 12:00 position.

Signal Search: The clock will now search for the radio signal. This can take anywhere from 3 to 15 minutes, though in some areas it may take up to 24 hours to catch a strong signal. Manual Time Setting

If you are out of range of a radio signal or the clock fails to sync, you can set it manually.

Enter Manual Mode: Press and hold the M. SET button for approximately 3 seconds.

Adjust Time: Continue holding the M. SET button for rapid advancement, or press it repeatedly to move the minute hand step-by-step.

Save & Exit: Once the correct time is reached, release the button. The clock will begin running normally as a standard quartz clock. Force Receiving (REC Button)

If the time is slightly off and you want to force a resynchronization: Press and hold the REC button for 3 seconds.

The hands will return to the 12:00 position and start a fresh search for the atomic signal. Troubleshooting & Tips

Positioning: For the best reception, place the clock near a window, preferably facing towards Fort Collins, Colorado (for US signals).

Interference: Keep the clock at least 2 meters away from electronic devices like TVs, computers, or microwaves that can block the radio signal.

Reset: If the clock behaves erratically, remove the battery for at least 10 seconds before reinserting to clear the internal memory.

For more specific details, you can find a downloadable PDF of these steps on the School Fix Atomic Clock Instructions or the TLC Electrical Supplies datasheet.

Are you setting up your CH899 clock in a location with lots of electronics or thick walls that might be blocking the signal? The Clock Depot Radio Controlled Analog Clock Instructions

To set up your Chouchin CH-899 radio controlled clock , follow these steps for automatic or manual synchronization. Automatic Setup

This is the recommended method to ensure your clock remains perfectly synchronized with the atomic signal. Set Time Zone & DST

: Before inserting the battery, locate the switches on the back. Slide the switch to your location ( -Mountain, -Eastern). Set the

switch to "ON" if you want the clock to adjust for Daylight Savings automatically. Insert Battery : Place one fresh AA alkaline battery into the compartment, observing the correct polarity (+/-). Synchronization Phase : The hands will quickly advance to the 12:00 position and stop. The clock will now search for the radio signal. : Signal reception typically takes 3 to 15 minutes

but can take up to several hours or overnight in areas with poor reception. Place the clock near a window, preferably facing Colorado (for the WWVB signal), to improve success. School Fix Manual Time Setting If the clock cannot find a signal, you can set it manually: Enter Manual Mode : Press and hold the button for approximately 3 seconds. Adjust Time : Continue holding the

button to make the hands move rapidly. Release the button as you approach the correct time, then press and release it repeatedly to advance the hands one minute at a time for precise adjustment.

: Stop pressing the button for about 6–10 seconds to save your setting and return to normal timekeeping. TLC Electrical Supplies Troubleshooting Force Signal Search : If the time is incorrect, press and hold the

(or WAVE) button for 3 seconds. The hands will reset to 12:00 and begin a fresh signal search. Hard Reset

: If the clock is unresponsive, remove the battery and wait at least 10 seconds (or insert the battery backward for 10 seconds to clear the memory) before reinserting it correctly. Low Battery

: If the minute hand starts moving in 2-second increments, it is time to replace the battery. TLC Electrical Supplies For a visual guide, you can view the CH-899 Instruction Manual (PDF) TLC Radio Clock Data Sheet best placement in your home to ensure a stronger radio signal? Radio Controlled Analog Clock Instructions

Chouchin CH-899 is a marvel of "set-and-forget" technology, designed to synchronize with atomic time signals

(like WWVB in North America or MSF in the UK) so you never have to worry about accuracy again. However, when it doesn't "just work," it can feel like a frustrating mystery.

Here is a deep dive into mastering your CH-899 radio-controlled clock, covering everything from initial setup to manual overrides. The "Zen" Setup (Automatic)

Most issues stem from impatience during the initial synchronization. Preparation : If your clock has a back cover, remove it. Set the Time Zone switch (P, M, C, E) and ensure the DST switch

: Insert a fresh, high-quality AA alkaline battery. Avoid rechargeable batteries as they often lack the necessary voltage. The 12:00 Reset

: The hands will automatically fast-forward and stop at exactly . This is normal; it is now in "search mode". : The clock will stay at 12:00 for 3 to 10 minutes

(sometimes up to 24 hours in weak signal areas) while it listens for the radio signal. Do not touch any buttons during this phase. Manual Overrides for the Impatient

If you are in a "dead zone" or need the clock set immediately, use these manual steps: Manual Time Setting : Press and hold the

button for 3 seconds. The hands will begin to advance. Hold to move quickly, or press momentarily for 1-minute increments. Forced Signal Search : If the time is wrong, press the

button for 3 seconds. The hands will return to 12:00 and attempt a fresh search for the signal. Troubleshooting "Time Drift"

If your clock isn't catching the signal, consider these environmental factors: : Place the clock near a window, ideally facing toward Fort Collins, Colorado (for US WWVB). Interference : Keep the clock at least 2 meters (6 feet)

away from TVs, computers, or routers, which can jam the delicate radio signal. Night Owls : Radio signals are strongest between midnight and 5:00 AM

. If it fails during the day, leave it overnight near a window; it will likely be correct by morning. The WiFi Variant (Modern CH-899)

Some newer CH-899 movements use WiFi instead of radio waves. If yours has a "WiFi-Clock" signal appearing on your phone: Connect your phone to the clock's WiFi (often named "Wifi-Clock_XXXXXX" Open a browser and type 192.168.4.1

Enter your home WiFi credentials to sync the clock with internet time. For further details, you can view the official School Fix Atomic Clock Instructions TLC Electrical MSF Guide Does your clock have a Time Zone switch on the back, or does it only have MSF Radio Controlled Wall Clock - TLC Electrical Supplies

❌ The clock resets every night

5. Time Zone Adjustment (for multi-zone models)

If your CH899 has a time zone dial or switch on the back:

Quick Start: CH899 Setup Instructions

3. Button Functions (CH899 Specific)

On the back of the CH899, you will find the following controls:

| Button/Switch | Action | |---------------|--------| | WAVE (press briefly) | Manually start a radio signal reception. | | WAVE (hold 5+ seconds) | Force a full reset and re-sync. | | RESET (pinhole) | Use a paperclip to press. Returns hands to factory calibration. | | TIME SET KNOB | Turn to adjust hours/minutes manually (only use when RC signal fails). |

Step 3: Do Not Touch