1. 서론
The LATNEX FC-3000P is a portable frequency counter designed for measuring continuous wave signals from two-way radios. It provides frequency parameters and signal strength indication, making it a valuable tool for monitoring and testing radio frequencies. This device is suitable for various applications, including 2m HAM radio, VHF, UHF, and DMR radio transceivers.
Key features include a wide frequency range, CTCSS/DCS decoding capabilities, and a clear TFT color display. Its compact size and four-button control ensure ease of use and portability.
2. 제품 오버view 및 기능

The FC-3000P is a versatile frequency counter capable of identifying frequencies from 27MHz to 3000MHz. It features a high-sensitivity receiver and includes a built-in CTCSS/DCS decoder. The device operates with a Temperature Compensated X'tal (crystal) Oscillator (TCXO) for enhanced accuracy. The intuitive four-button interface and TFT color display ensure straightforward operation and clear data presentation.
- 주파수 범위: 27MHz-3000MHz (Note: Performance below 100MHz, specifically 27MHz, may vary and is not guaranteed for all continuous carrier signals).
- CTCSS/DCS Decoder: Built-in for identifying sub-audible tones.
- 표시하다: TFT Color Display (240 x 320 pixels) with adjustable dim level.
- 정확성: TCXO (Temperature Compensated X'tal Oscillator) provides ±2 to ±4ppm accuracy within -45°C to 65°C.
- 응답 시간: 0.2-0.5 seconds (CTCSS/CDCSS >0.5-1 second).
- 배터리: Built-in Li-ion battery with charging indicator.
- 제어: Four-button interface for easy navigation.
- 자동 전원 끄기: 1분에서 9분까지 조절 가능합니다.
3. 상자 안에 무엇이 들어있나요?

패키지를 열 때 다음 품목이 모두 포함되어 있는지 확인하세요.
- LATNEX FC-3000P Frequency Counter Unit
- 안테나
- 전원 코드(USB 충전 케이블)
- 사용 설명서 (본 문서)
4. 설정
- 초기 충전: Before first use, fully charge the built-in Li-ion battery. Connect the provided USB charging cable to the "Charger in" port on the device and plug the other end into a USB power adapter or computer USB port. The "Charger LED" will indicate charging status.

그림 1: 하단 view of the FC-3000P showing connection ports.
- 안테나 부착: Screw the provided antenna onto the "Antenna in" BNC connector located on the top of the device. Ensure it is securely fastened.
- 전원 켜기: Press and hold the power button (usually the leftmost button) to turn on the device. The TFT color display will illuminate.
- Signal Attenuation: The device features a signal attenuation switch (0dB / Att 10dB) near the antenna port. For strong signals, you may switch to "Att 10dB" to prevent overload and improve measurement accuracy. For weaker signals, keep it at "0dB".
5. 사용 설명서

Figure 2: FC-3000P display and button layout (PIC.1).
- 전원 켜기/끄기: Press and hold the power button (leftmost button) to turn the device on or off.
- 주파수 측정:
- 안테나가 연결되어 있는지 확인하십시오.
- Place the FC-3000P near the radio transmitting the signal you wish to measure.
- The device will automatically detect and display the frequency (Freq) on the screen.
- The "RF Signal Level" bar graph indicates the strength of the detected signal.
- CTCSS/DCS 디코딩:
- When a continuous carrier signal with CTCSS or DCS is detected, the corresponding code will be displayed under "Ctcss" or "Cdcss" on the screen.
- The "Code Signal Level" bar graph indicates the strength of the detected sub-audible tone.
- Mode Selection (Analog/Digital): Use the navigation buttons (typically the middle two buttons) to switch between "Analog" and "Digital" modes if available. The FC-3000P supports DMR radio signal frequency counting.
- Display Dim Level: Access the settings menu (refer to the specific button functions on your device, usually by pressing a menu button) to adjust the LCD dim level for optimal viewing and battery conservation.
- 자동 전원 끄기 설정: The device can be configured to automatically power off after a period of inactivity (1-9 minutes). Adjust this setting in the device menu to conserve battery life.
6. 유지관리
- 청소: 부드럽고 마른 천을 사용하여 기기를 닦으세요. 연마성 세제나 용제는 사용하지 마세요.
- 배터리 관리 :
- Recharge the battery when the "Battery Level" indicator is low.
- 배터리 수명을 연장하려면 배터리를 자주 완전히 방전시키지 마세요.
- 장기간 기기를 보관할 경우 배터리를 약 50%까지 충전한 후 서늘하고 건조한 곳에 보관하십시오.
- 저장: 기기를 건조한 환경에 보관하고, 극한 온도와 직사광선을 피하십시오.
- 안테나: Ensure the antenna is not bent or damaged. Replace if necessary to maintain optimal performance.
7. 문제 해결
| 문제 | 가능한 원인 | 해결책 |
|---|---|---|
| 장치의 전원이 켜지지 않습니다. | 배터리가 방전되었습니다. | Charge the device using the provided USB cable and adapter. |
| No frequency reading or unstable reading. |
|
|
| CTCSS/DCS not decoding. |
|
|
| Inaccurate readings on 27MHz. | Device's specified reliable range starts from 100MHz. | While the device can detect signals down to 27MHz, reliable and guaranteed accuracy is for 100MHz and above. Performance at 27MHz may vary. |
8. 사양

Figure 3: FC-3000P Specifications Overview.
| 특징 | 사양 |
|---|---|
| 주파수 범위 | 27MHz-3000MHz (Note: 27MHz to 100MHz cannot be guaranteed for normal emission appliance) |
| CTCSS / DCS 디코더 | 예 |
| LCD 디스플레이 | TFT Color Display 240 x 320 pixels, adjustable dim level |
| Frequency Digital | 0.000 or 0.0000 (+/-0.001) |
| 발진기 | TCXO (Temperature Compensated X'tal Oscillator) 2~2.5ppm |
| 주파수 응답 시간 | 0.2-0.5 sec (CTCSS/CDCSS >0.5-1 sec) |
| 내장 배터리 | Li-ion battery (600mAh) |
| 제어 | 4개의 버튼 |
| 자동 전원 끄기 | 1~9분 (시간 조절 가능) |
| 충전기 입력 | Micro USB +5V in |
| 임피던스 입력 | 50 Ohm (BNC) |
| 순중량 | 113g(약 3.99온스) |
| 치수 | 70 x 25 x 90mm (not including antenna & BNC socket) |
9. 보증 및 지원
The LATNEX FC-3000P Frequency Counter comes with a 2년 보증 구매일로부터 적용됩니다. 이 보증은 제조상의 결함을 보장하며, 제품이 정상적인 사용 환경에서 설명된 대로 작동함을 보장합니다.
For technical support, assistance with setup, operation, or troubleshooting, please contact LATNEX customer service. Support is available via phone and email through Amazon Messages. Please refer to your purchase documentation for specific contact details.
Always refer to this user manual for guidance before contacting support, as many common issues can be resolved by following the instructions provided.