AnyTone AT-500M II
AnyTone AT-500M II CB Mobile Transceiver User Manual
Model: AT-500M II
1. Ifihan
The AnyTone AT-500M II is a compact and feature-rich CB mobile transceiver designed for reliable communication in vehicles. This manual provides detailed instructions for the proper installation, operation, and maintenance of your AT-500M II radio.
Key features include AM/FM modulation, Noise Reduction (NRC) for both transmit and receive, a 7-color customizable display, VOX function, CTCSS/DCS codes, and a WX weather channel (USA version only).

Image 1.1: The AnyTone AT-500M II CB Mobile Transceiver, shown in a vehicle environment, highlighting its compact design suitable for mobile use.
2. Package Awọn akoonu
Please verify that all items listed below are included in your package. If any items are missing or damaged, contact your dealer immediately.
- AnyTone AT-500M II CB Radio x 1
- Gbohungbohun x1
- Microphone Hanger x 1
- Mobile Bracket x 1
- Spare Fuses (5A 250V) x 1
- Awọn skru x 4
- Ilana olumulo x 1
- Pads x 4
- Adjusting Screws x 2
- Non-slip Mat x 2

Image 2.1: A visual representation of the standard accessories included with the AnyTone AT-500M II, alongside a specifications table.
3. Awọn iṣakoso ati Awọn iṣẹ
Familiarize yourself with the controls and connectors of your AT-500M II radio.

Aworan 3.1: alaye view of the front and rear panels of the AnyTone AT-500M II, indicating the location and labels of various controls and connectors.
3.1 Iwaju Panel idari
- Pulọọgi Gbohungbohun: Connector for the supplied microphone.
- Power On/Off / Volume Control (VOL): Rotates to turn the radio on/off and adjust the audio output level.
- Emergency Channel / VOX On/Off / Menu (EMG/MENU): Press to access emergency channels or activate/deactivate VOX. Long press to enter the menu settings.
- AM/FM Mode / CB/WX / Keypad Lock: Selects between AM and FM modulation. Toggles between CB and Weather (WX) channels. Long press to lock/unlock the keypad.
- Squelch Control / SQ/ASQ: Adjusts the squelch level to suppress background noise. Press to toggle between manual squelch (SQ) and automatic squelch (ASQ).
- Channel Up / Scan On (CH ▲): Increases the channel number. Long press to activate channel scan.
- Channel Down / Scan On (CH ▼): Decreases the channel number. Long press to activate channel scan.
3.2 Ru Panel Connectors
- Antenna Jack (ANT): Standard UHF, SO-239 connector for external antenna.
- External Speaker Jack (EXT SP): Connects an optional external speaker.
- Iṣagbewọle agbara: 12V DC agbara asopọ.
3.3 Ifihan Awọn ẹya ara ẹrọ
The AT-500M II features a 7-color backlit display for enhanced visibility and personalization.

Aworan 3.2: Examples of the 7-color backlit display options available on the AnyTone AT-500M II, demonstrating various color settings for user preference.
To change the display color, navigate through the menu options using the EMG/MENU button and select the desired color setting.
4. fifi sori
Proper installation is crucial for optimal performance and safety. Ensure the vehicle's electrical system is 12V DC.

Image 4.1: Multiple views of the AnyTone AT-500M II, including its dimensions (7.3 x 4.9 x 1.5 inches or 18.5 x 12.4 x 3.8 cm), to assist with mounting and space planning.
4.1 Iṣagbesori Redio
- Select a secure and convenient location in your vehicle that does not obstruct driving or airbag deployment.
- Use the provided mobile bracket as a template to mark drilling locations.
- Drill pilot holes and secure the mobile bracket using the supplied screws and pads.
- Attach the radio to the mobile bracket using the adjusting screws.
4.2 Asopọ agbara
- Connect the red wire from the radio's power cable to the positive (+) terminal of the vehicle's 12V battery or a suitable fused 12V power source.
- Connect the black wire to the negative (-) terminal of the battery or the vehicle's chassis ground.
- Ensure connections are secure and properly insulated. The radio operates on 12V DC input voltage.
4.3 Eriali Asopọ
- Connect a properly tuned CB antenna (not included) to the UHF, SO-239 antenna connector on the rear of the radio.
- Ensure the antenna cable is routed away from potential interference sources and is securely connected.
4.4 Gbohungbohun Asopọ
Plug the microphone into the dedicated microphone jack on the front panel of the radio. Secure the microphone hanger in a convenient location.

Aworan 4.2: Isunmọ view of the microphone provided with the AnyTone AT-500M II, showing its design and connector type.
5. Isẹ
5.1 Ipilẹ isẹ
- Titan/Apapa: Rotate the VOL knob clockwise to turn the radio on. Rotate counter-clockwise until it clicks to turn off.
- Atunse iwọn didun: Rotate the VOL knob to adjust the listening volume.
- Aṣayan ikanni: Use the CH ▲ and CH ▼ buttons to select the desired channel.
- AM/FM Mode: Press the AM/FM button to switch between Amplitude Modulation (AM) and Frequency Modulation (FM) modes.
- Squelch Control (SQ/ASQ): Adjust the SQ knob to eliminate background noise when no signal is present. Press the SQ/ASQ button to toggle between manual squelch and automatic squelch.
5.2 To ti ni ilọsiwaju Awọn ẹya ara ẹrọ
- Iṣẹ VOX: Voice Operated Exchange allows hands-free transmission. Activate/deactivate via the EMG/MENU button or menu settings.
- Koodu CTCSS/DCS: Continuous Tone-Coded Squelch System / Digital Coded Squelch provides selective calling, allowing you to hear only calls from users with the same code. Configure in the menu.
- NRC (Noise Reduction): Transmit and Receive Noise Reduction helps to filter out background noise for clearer communication. This feature is active by default.
- Echo/RB/Key Beep: These functions can be enabled or disabled through the menu. Echo adds an echo effect to your voice. RB (Roger Beep) transmits a short tone when you release the PTT button. Key Beep provides audible feedback for button presses.
- RF Gain and Mic Gain Control: Adjust these settings in the menu to optimize receiver sensitivity and microphone input level, respectively.
- WX Weather Channel (USA version only): Press the CB/WX button to access dedicated weather channels for real-time weather alerts.
- Talkback/PA Function: The Talkback function allows you to monitor your own voice during transmission. The PA (Public Address) function allows the radio to be used with an external PA speaker (not included).
- Two Scan Modes: The radio supports two scanning modes to monitor active channels. Activate by long-pressing the CH ▲ or CH ▼ buttons.
- 2K/4K FM Deviation Selection: Select the desired FM deviation (2K or 4K) in the menu for compatibility with different systems.
- Hi-Cut Function: This feature filters out high-frequency audio components to improve clarity, especially in noisy environments.
- NB/ANL: Noise Blanker (NB) and Automatic Noise Limiter (ANL) reduce impulse noise from vehicle ignition systems and other electrical sources.
- Atilẹyin gbohungbohun: The AT-500M II supports both electret and dynamic microphones.
6. Awọn pato
The following table outlines the technical specifications of the AnyTone AT-500M II CB Mobile Transceiver.
| Ẹka | Paramita | Iye |
|---|---|---|
| Gbogboogbo | Ipo Awose | AM/FM |
| Iwọn Igbohunsafẹfẹ | 26.965-27.405MHz | |
| Ifarada Igbohunsafẹfẹ | ± 5.0ppm | |
| Iṣagbewọle Voltage | 12V | |
| Awọn iwọn (H x W x D) | 7.3 x 4.9 x 1.5 inches (18.5 x 12.4 x 3.8 cm) | |
| Iwọn | 1.37 lb (620 g) | |
| Awọn iwọn otutu ti nṣiṣẹ | -20 ℃ si + 50 ℃ | |
| Current Drain (Transmit) | 3A Max | |
| Asopọ Eriali | UHF, SO-239 | |
| Atagba | Ijade agbara | 4W |
| Transmission Interference | Inferior to 4nW | |
| Idahun Igbohunsafẹfẹ | 300-3000Hz | |
| Imudaniloju ijade | 50 ohms | |
| Olugba | Ifamọ | Kere ju 1uV fun 10dB (S+N)/N |
| Aworan ijusile | 70dB | |
| Ijusile ikanni nitosi | 60dB | |
| IF Awọn Igbohunsafẹfẹ | 1st 10.695MHz; 2nd 455KHz | |
| Iṣakoso Ere Aifọwọyi (AGC) | Less than 10dB change in audio; Output for inputs from 10 to 50000uV | |
| Elegede | Less than 1uV | |
| Audio wu Power | 2 Watts at 8Ω less than 10% distortion | |
| Idahun Igbohunsafẹfẹ | 300-3000Hz |
7. Laasigbotitusita
If you experience issues with your AT-500M II, refer to the following common problems and solutions before seeking service.
- Ko si Agbara:
- Check the power cable connections to the radio and the vehicle's power source.
- Verify the vehicle's 12V power source is active.
- Inspect the inline fuse on the power cable. Replace if blown with a 5A 250V fuse.
- No Transmission or Poor Signal:
- Ensure the antenna is securely connected to the radio.
- Check the antenna for damage or improper tuning.
- Verify the microphone is properly plugged in and the PTT button is functioning.
- Poor Reception or Excessive Noise:
- Adjust the Squelch (SQ) control to an appropriate level.
- Ensure the antenna is properly installed and tuned.
- Check for sources of electrical interference in the vehicle.
- Activate NB/ANL or Hi-Cut functions if necessary.
- Gbohungbohun Ko Ṣiṣẹ:
- Ensure the microphone is fully inserted into the front panel jack.
- Check for any damage to the microphone cable or connector.
8. Itọju
8.1 Ninu
To maintain the appearance and functionality of your radio, clean the exterior with a soft, damp asọ. Ma ṣe lo abrasive ose tabi epo.
8.2 Fiusi Rirọpo
If the radio does not power on, check the inline fuse on the power cable. To replace a blown fuse:
- Disconnect the power cable from the vehicle's power source.
- Open the fuse holder and remove the blown fuse.
- Insert a new fuse of the correct rating (5A 250V). Using an incorrect fuse can damage the radio or vehicle's electrical system.
- Close the fuse holder and reconnect the power cable.
9. Atilẹyin ọja ati Support
AnyTone is committed to providing high-quality pre-sales and after-sales service for its products. For any questions or concerns regarding your AT-500M II radio, please contact your point of purchase or AnyTone customer support.
ID FCC: T4K-AT500MII
Olupese: Qixiang Electron Science & Technology Co., Ltd.
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