1. はじめに
The BOYA BY-WFM12 is a 12-channel VHF wireless microphone system designed to capture audio for smartphones, tablets, DSLR cameras, camcorders, audio recorders, and PCs. This system offers high-band VHF operation for superior sound quality and features such as real-time sound monitoring and card recording capabilities to prevent missing recordings.
2. 箱の中身
- 送信機ユニット
- 受信ユニット
- Lavalierマイク
- コールドシューマウントアダプター
- 3.5mm TRS to TRS Output Cable (for cameras)
- 3.5mm TRS to TRRS Output Cable (for smartphones)
- Belt Clips (pre-attached)
- Windscreen for Lavalier Microphone
- 保証書
- ユーザーマニュアル
- AA Batteries (may vary by package)
3 製品の特徴
- 互換性: Works with smartphones, tablets, DSLRs, camcorders, audio recorders, PCs, etc.
- 12つの切り替え可能なチャンネル: Provides multiple frequency options to avoid interference.
- High-Band VHF Operation: 優れた音質を保証します。
- ボリュームコントロールホイール: Allows precise audio level adjustment.
- Detachable and Flexible Antenna: Features 360° rotation for optimal signal reception.
- 無線範囲: Operates up to 40m (131 feet) away without obstacles.
- 電池駆動: Both receiver and transmitter use two AA size alkaline batteries.
- Card Recording: Transmitter supports MicroSD card recording (up to 32GB) to prevent missing recordings and allow direct editing without conversion.
- リアルタイム監視: Receiver monitor jack allows real-time audio status check.
- Infrared Sync Pairing: Seamlessly docks wireless channels for quick setup.
4.セットアップガイド
4.1バッテリーの取り付け
Open the battery compartment on both the transmitter (TX) and receiver (RX) units. Insert two AA batteries into each unit, ensuring correct polarity. Close the battery compartments securely.

Figure 1: Transmitter and Receiver units with open battery compartments, showing where to insert AA batteries.
4.2 ラベリアマイクの取り付け
Connect the 3.5mm plug of the lavalier microphone to the 'MIC IN' port on the transmitter unit. Secure the microphone to your clothing using the clip, positioning it approximately 6-8 inches from your mouth for optimal sound capture. Attach the foam windscreen to the lavalier microphone to reduce plosives and wind noise.
4.3 録音デバイスへの接続
- カメラ/ビデオカメラの場合: Use the supplied 3.5mm TRS to TRS output cable. Connect one end to the 'OUTPUT' port on the receiver and the other end to the microphone input jack of your camera.
- スマートフォン/タブレットの場合: Use the supplied 3.5mm TRS to TRRS output cable. Connect one end to the 'OUTPUT' port on the receiver and the other end to the headphone/microphone jack of your smartphone/tablet.

Figure 2: The BY-WFM12 system connected to a smartphone for mobile recording.

Figure 3: The BY-WFM12 system connected to a DSLR camera for professional video recording.
5. 操作手順
5.1 電源のオン/オフ
Press and hold the power button on both the transmitter and receiver units until their respective screens light up. To power off, press and hold the power button again.
5.2 Channel Pairing (Infrared Sync)
Ensure both the transmitter and receiver are powered on. Align the infrared sensors on both units (usually located on the side). Press the 'SET' button on one unit to initiate pairing. The units will automatically scan and pair to an available channel. The screen will display the selected channel.

Figure 4: Close-up of the Transmitter and Receiver units, highlighting their displays and controls.
5.3 音量の調整
Use the volume control wheel on the receiver unit to adjust the output audio level to your recording device. Monitor the audio levels on your camera or through headphones connected to the receiver's monitor jack to prevent clipping or low volume.
5.4 リアルタイムオーディオモニタリング
Connect headphones to the 'MONITOR' jack on the receiver unit to listen to the audio being captured in real-time. This helps ensure clear audio and proper functioning during recording.
5.5 On-board Recording (Transmitter)
Insert a MicroSD card (up to 32GB) into the dedicated slot on the transmitter unit. Refer to the user manual for specific instructions on how to initiate and stop recording directly on the transmitter. This feature provides a backup recording in case of wireless interference or dropouts.
6. メンテナンス
- デバイスを乾燥した状態に保ってください。水や湿気にさらさないでください。
- Use a soft, dry cloth to clean the units. Avoid harsh chemicals or abrasive materials.
- 長期間使用しない場合は、液漏れを防ぐため電池を取り外してください。
- システムは直射日光や極端な温度を避け、涼しく乾燥した場所に保管してください。
7。 トラブルシューティング
- 音が出ない: Check battery levels, ensure units are powered on and paired, verify cable connections, and adjust volume levels.
- 干渉/ノイズ: Try switching to a different channel using the infrared sync function. Ensure the antenna is properly positioned.
- 範囲が狭い: Ensure there are no major obstacles between the transmitter and receiver. Check battery levels.
- 録音の問題: Ensure MicroSD card is properly inserted and formatted. Check available storage space.
8. 仕様
| 特徴 | 仕様 |
|---|---|
| キャリア周波数範囲 | 540MHz~592MHz |
| チャンネル数 | 99 |
| 周波数応答 | 60~17KHz |
| 有効距離 | About 150 meters (131 feet without obstacles) |
| アンテナ | 1/4 Conductor |
| オーディオインターフェース | 3.5mm TRSインターフェース |
| 信号対雑音比 | ≥75dB |
| 全高調波歪み | 0.5% |
| 音の遅れ | <1ミリ秒 |
| ヘッドホン出力 | 90mW |
| RF出力電力 | 30mW |
| スプリアス抑制 | -60dB |
| アンテナ | Soft antenna |
| オーディオ入力インターフェース | 3.5mmTRSインターフェース |
| レコーディング Sampリンレート | 16bit 48K |
| Max. Support Storage | 32G (MicroSD) |
| 力 | 単三電池2本 |
| 一生 | 約5時間 |
| 寸法 | 195mm×30mm×65mm |
| 重さ | RX 87g, TX 86g |
9. 保証とサポート
The BOYA BY-WFM12 comes with a One Year BOYA warranty. For support or warranty claims, please refer to the contact information provided in your product packaging or visit the official BOYA webサイト。