The Sony UTX-B40 is a wireless bodypack transmitter compatible with the URX-P40 camera-mount receiver. Compact and lightweight, with a robust, all-metal construction, this bodypack is well suited for tough operating conditions, while remaining comfortable for the talent to wear. It provides up to 8 hours of operation on two AA batteries, with a selectable 5/30mW RF power output and a transmission range up to 330'.

The UTX-B40 comes with an ECM-V1BMP omnidirectional lavalier microphone optimized for speech. The transmitter has a locking, 3.5mm BMP-type microphone input connector with an adjustable input level to accommodate other compatible lavalier or headset microphones of your choice. The transmitter offers a 72 MHz bandwidth with 2772 selectable UHF frequencies.

The UTX-B40 is backward-compatible with Sony WL-800 and UWP Series systems.

For UWP-D Wireless Systems    ECM-V1BMP Omnidirectional Lavalier    Locking 3.5mm BMP-Style Connector    2772 Auto-Scan Frequencies with NFC    5/30mW RF Output Power    Automatic Gain Adjustment    Daylight-Readable OLED Display    Variable Muting Function    8-Hr AA Batteries + USB Power

Unlike traditional analog wireless systems, the UWP-D supplements its proven analog UHF transmission technology with a proprietary digital audio processing. Transient sounds and consonants are reproduced with greater accuracy, resulting in clear, natural sound that’s intelligible and nuanced.

The ECM-V1BMP lavalier mic is optimized for capturing clear and intelligible speech. This omnidirectional mic picks up sound from every direction, allowing for a variety of placement options and freedom of movement.

Press and hold the NFC/Sync button on the receiver and it scans for the cleanest RF channel. Simply hold the transmitter next to the receiver; it automatically syncs up and you're good to go!

Unlike purely digital systems, the UTX-B40 allows you to send a single mic to multiple cameras for broadcast applications. Fast NFC communication makes setup for multiple receivers a breeze.

Auto-Gain mode saves you the time and aggravation of setting and managing the input level on the transmitter. It uses a limiter to help prevent distortion, great when the loudness of the presenter’s voice is unknown.

The +15 dB Gain Volume-Boost mode boosts the mic gain by 15 dB to compensate for situations when the mic is not close enough to the presenter’s mouth and the audio level is insufficient.

Manual input-level setting is also available.

The unit features an easy-to-read OLED display. The quick response of the display lets you see the operating conditions clearly and accurately in real time, even in bright sunlight.

Two levels of DSP filtering help remove the artifacts caused by occupancy sensors used in modern "green" buildings to turn off lights when people leave a room.

Two AA batteries (alkaline or NiMH rechargeable type) power the transmitter for up to 8 hours.

The unit can also be powered through its USB port, allowing it to run for numerous hours on a USB power pack or indefinitely, if you have access to AC.

A battery count-up timer allows for accurate reading of battery running time to minute accuracy.

• Switchable Mic/Line input level so you can set the correct gain level for your sound source.
• Low-cut filter reduces noise caused by wind or machinery—Off / Low (100 Hz) / Mid (150 Hz) / High (200 Hz).
• Simple menus make navigation easy. Advanced menus for in-depth control are also available.
• The variable mute button on the transmitter can be programmed for latched or momentary muting. It can also be used as a momentary talk button.
• You can operate up to 16 mics in one location.

The UWP-D transmitter can be used with a UWP Series or WL-800 Series receiver. A UWP Series or WL-800 Series transmitter can be used with a UWP-D receiver.

Related Questions and Answers

Q: 1. Can this mic be used with the UWP-D11 receivers? And more specifically, can they sync channels with the IR feature found on the side of the UWP D11 receiver pack?

A: Yes, this mic can be used with a receiver from the UWP-D11 system. There is an IR sensor on the bottom of the mic to allow for IR syncing. Please note, the transmitter frequency range must match that of the receiver.

Q: 2. Will two of these work with the URX-P03D Dual-Channel Camera-Mount Wireless Receiver?

A: Yes it will.

Q: 3. I'm getting a SYNC ERROR when attempting to sync this (UTX-M40) to the URX-P41D receiver. Can't find any info online. Any advice?

A: You can find instructions on how to sync the Sony UTX-M40 Wireless Handheld Cardioid Microphone Transmitter and the Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver in the user manual. The information for "Operation" that begins on page 23 should be helpful. https://www.bhphotovideo.com/lit_files/833188.pdf

Q: 4. Can you connect two UTX-B40 to one URX-P40? A use case would be two people talking, each person with a UTX-B40 and a URX-P40 connected to a camera that is recording kind of like a discussion/interview between two people

A: No, the URX-P40 is a single-channel receiver that can be used with one transmitter only. For two people, you will want the Sony URX-P03D Dual-Channel Camera-Mount Wireless Receiver - UC14: 470 to 542 MHz (B&H # SOURXP03D14) which is a two-channel receiver that can be used with two transmitters at the same time. We do sell a kit that includes the URX-P03D receiver and two UTX-B40 transmitters with lavalier mics and a case, which is the Sony UWP-D 2-Person Camera-Mount Wireless Omni Lavalier Microphone System Kit - UC14: 470 to 542 MHz (B&H # SOURXP03D14Q). The URX-P03D can send one signal to the camera with the combined audio from both mics.

Q: 5. Is this compatible with the URX-P03D (stereo) receiver?

A: Yes,as lomg as both are in the same frequency bank and tuned to the same frequency.

Q: 6. Is there a compatible 3.5mm male to TA3 female cable for this?

A: No there is not.

Q: 7. Can I use sanken cos11 on this transmitter?

A: Yes link below : https://www.bhphotovideo.com/c/product/671663-REG/Sanken_COS_11D_UWP_BK_COS_11D_Miniature_Omnidirectional_Lavalier.html

Q: 8. Does this, like the K3M, give you access to 4 channel recording in the A7siii/A1, or do you have to stack it on top of the K3M handle?

A: The Sony UWP-D27 2-Person Camera-Mount Wireless Omni Lavalier Microphone System would need to be connected to the Sony XLR-K3M Audio Adapter in order to achieve four channels of audio into a camera like the Sony a7S III Mirrorless Camera.

Q: 9. What's the difference between the b40 and b03 body pack?

A: The Sony UTX-B40 Wireless Bodypack Transmitter with Omni Lavalier Mic improves upon the UTX-B03 with a slightly smaller form factor, improved battery compartment, and fast, easy frequency setting with NFC Sync.

Q: 10. Hi there. Is there a pouch available for this unit. E.G. will this work?: BH #SOLCSURXP2

A: Yes, the Remote Audio URSA Pouch for Wireless Transmitters - Medium, Black (B&H # REUPOUCHMEBL) or the On-Stage MA1435 Wireless Transmitter Body Pack Belt - Black (B&H # ONMA1435) will work to hold the Sony UTX-B40 Wireless Bodypack Transmitter.