SONY Wireless Bodypack Transmitter (25)

SONY Wireless Bodypack Transmitter (25) is a compact UWP-D bodypack transmitter package made for lavalier-based speech capture in ENG, interviews, documentaries, weddings, and remote production. From the supplied source, it includes a Sony UTX-B40 wireless bodypack transmitter with an omni lavalier microphone and operates on the UC25 frequency range from 536.125 to 607.875 MHz.

This is the practical choice when the talent needs to stay on mic while moving naturally. Clip the lavalier, place the bodypack, check the OLED, and the audio path is ready for a compatible UWP-D receiver.

Highlights

• Wireless bodypack transmitter for lavalier microphone workflows
• UC25 frequency range: 536.125 to 607.875 MHz
• Omni-directional lavalier microphone for natural speech pickup
• 0 dB to 27 dB audio attenuator in 3 dB steps
• OLED display, NFC sync, and USB-C power support

Quick Specs & Uses

• Model: Sony UTX-B40 wireless bodypack transmitter with omni lavalier mic
• Carrier frequency, UC25: 536.125 MHz to 607.875 MHz
• Capsule type: Electret condenser
• Directivity: Omni-directional
• Antenna type: 1/4 λ wavelength wire antenna
• Input connector: 3.5 mm diameter 3-pole locking mini jack
• Audio attenuator adjustment: 0 dB to 27 dB, 3 dB steps
• Audio delay: Approx. 0.35 ms
• Display: OLED
• Distortion: 0.9% or less
• Frequency response: 23 Hz to 18 kHz typical
• RF output power: 30 mW / 5 mW selectable for UC models
• Reference audio input level: -60 dBV mic input, +4 dBu line input
• Signal-to-noise ratio: 60 dB; 102 dB in AUTO GAIN max.; 96 dB in NORMAL max.
• Power requirements: DC 3.0V with two LR6/AA batteries or DC 5.0V from USB Type-C connector
• Battery life: Approx. 8 hours at 30 mW output power
• Dimensions: 63 x 73 x 19 mm / 2 1/2 x 2 7/8 x 3/4 in, excluding antenna
• Mass: Approx. 83 g / 2.9 oz, excluding batteries
• Operating temperature: 0°C to 50°C / 32°F to 122°F
• Storage / transport temperature: -4°F to 140°F / -20°C to +60°C

Why It Helps

The UTX-B40 is useful when the production needs a small bodypack transmitter for clean lavalier audio. It fits presenter audio, sit-down interviews, documentary work, wedding coverage, and field shoots where the speaker needs to move without being tied to the camera.

The omni-directional lavalier gives the talent a bit of placement forgiveness. In real use, that helps when clothing, posture, or head movement changes during the take. The locking 3.5 mm connector also keeps the mic connection more secure than a loose consumer-style plug.

The OLED display, NFC sync, and USB-C power support keep setup simple. The operator can pair quickly, check status at a glance, and manage gain with the 0 dB to 27 dB attenuator before the signal reaches the receiver.

System Characteristics

• Bodypack transmitter design for talent-worn wireless audio
• Electret condenser lavalier microphone for spoken-word capture
• Omni-directional pickup for natural voice coverage
• NFC sync for quick channel setting with compatible receivers
• USB-C power support for flexible operation beyond AA batteries

What’s In The Box

• 1 x Sony UTX-B40 Wireless Bodypack Transmitter with Omni Lavalier Mic (UC25: 536 to 608 MHz)
• 1 x Sony ECM-V1BMP Omnidirectional Lavalier Microphone with Locking Sony 3.5mm Connector (Black)
• 1 x Windscreen
• 1 x Mic Clip
• 1 x Belt Clip

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