JTS R-4BTM Transmitter 823 - 865MHz

Code: R-4TBM823
  • £273.00
  • (FREE UK Delivery)
+ In Stock Now   |   Usually dispatched within 24 hours
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Small, discrete and excellent build quality are the requirements for any theatre, school, house of worship or performer needing a body pack transmitter for headsets or lavalier mics. The R-4TBM is an impressive piece of engineering with a metal housing for first class reliability.

Key Features : 

  • 2400 to 3000 selectable frequencies
  • Preset 15 groups each of up to 63 compatible channels
  • Phase-Locked Loop (PLL) synthesized tune
  • Extended dynamic range and smooth frequency response.
  • Adjustable transmission power between Low and High
  • The panel Lock-On function prevents tampering and RF interruption
  • Together with JTS various music instrument mics, headset mics and tie clip mics this bodypack is versatile for all applications.

Full Spec 

  • Net Dimension (WxHxD): 62 x 80.3 x 22.6mm
  • Net Weight: 93g
  • Frequency Preparation: PLL Synthesized Control
  • Controls: Power ON/OFF, AF Level, Frequency (Up/ Down), Lock-on Mode, REMOSET ID Pairing, RF Output Adjust
  • Output Connector: 4 Pin mini XLR
  • RF Outputs: High/Low
  • Frequency Deviation: ±48KHz (Peak)
  • Battery: UM3, AA x2
  • Audio Frequency Response: 50Hz - 18kHz
  • Chassis: Aluminium Alloy
  • LCD Display: Group, Channel, Frequency, Battery Status, User Name , GAIN Adjust


Here at Prebeat, our goal is to dispatch and deliver your order as quickly possible. Our orders are sent fast and tracked with either DPD or FedEx. You will also receive the tracking by text and/or email once the order is dispatched.  

Smaller orders which are under £50 and small in size will be shipped using Royal Mail's 48 Hour Tracked service.  

Delivery on orders over £50 to mainland UK is free. For orders under £50, the charge is just £3.95. Orders for non mainland UK destinations (see our main delivery page) are free when you spend £100.

Please check the product page for details of how long delivery will take as it is shown for each product depending on where it is located. 


You can buy from us knowing you have 30 days to return an item for a full refund, as long as that item is returned in its brand new and unused condition. For full details of our Returns Policy, see our main Returns page.

All of our products also have a manufacturer's warranty of a minimum of 1 year. Should a product be faulty within 30 days of purchase, just contact us and we will arrange the return at our cost for a replacement. After the 30 day period, you will need to return the item for repair under warranty.

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