Continue Shopping View Cart
Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.

Fast Economical International Shipping
Markertek makes it EASY for our international customers to get their orders!

At check-out you can view our very affordable international shipping rates that are ALL-INCLUSIVE with your GUARANTEED LANDED COST and NO SURPRISE FEES!

*Economy International Shipping delivery time is approximately 7-14 days. Economy International Shipping is available to select countries. Not all products are eligible.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers

Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

Telex TR-825-B4R Belt Pack RTS A4F Headset Jack B4 BAND
    Questions? Ask a Markertek Expert:
    800-522-2025 Email

    Telex TR-825-B4R Belt Pack RTS A4F Headset Jack B4 BAND

    Item #: TX-TR-825-B4R   •   MFG #: TR-825-B4R




    Required Accessories

        Show More

    On/Off & Volume Control
    Turns the beltpack power on and controls head set volume.

    Wireless Talk Around (WTA)
    When pressed, the user's audio is disconnected from the wired intercom, auxiliary input/output and the base station's local headset. Other beltpack users, on that audio channel, can hear the user as normal.

    Stage Announce (SA)
    When pressed, the user's audio is routed to the stage announce connector on the back of the base station. The user also loses their sidetone as an indication that stage announce is activated. The other wireless beltpacks and wired users do not hear the user's audio. The button is non-latching and activates the nearby red LED.

    Audio Channel Select Button
    Allows user to select either audio channel A or B.

    Bat/Overmod Light (BAT/OM)
    Light will flash once when unit is turned on if the battery is good. If the light stays on, battery is low. If the light does not flash, battery is dead. A normal microphone gain setting will cause the LED to flash at the beginning of most words at normal speech levels. If the gain is too high, the LED will be red during the complete word at normal speech levels.

    Talk Light
    LED is on when the talk button, SA or WTA is active.

    Talk Button
    Press to enable the audio path from the local headset microphone. The "TALK" LED, #6, will turn red when enabled. A quick press and release latches the talk function, unless latching has been disabled. Holding the button for over ½ a second will cause the audio path to be enabled only for as long as the button is held. If the talk function is latched on, pressing the talk button again will turn it off.

    • Specifications

      • Antenna 1/4 Wave (supplied), Screw type, Replaceable TX and RX
      • Binaural Yes
      • Color Black
      • Current Draw 190 mA Push-to-Talk, A and B Talk On
      • Depth 2.02" (51.3 mm)
      • Distortion < 1 % at full deviation
      • FCC ID B5DM517
      • Form Factor Beltpack
      • Frequency Response 300 Hz-8 kHz
      • Function User Station
      • Height 5.35" (135.9 mm)
      • IF Selectivity 3 dB at 230 kHz
      • Image Rejection 70 dB or better
      • Local Headset Output 40 mW output into 600W 1% distortion
      • Microphone Input Sensitivity 7 mV
      • Power Requirements 6 "AA" Cells Alkaline NiMH optional
      • RF Frequency Range 470 - 608 MHz, 614 - 740 MHz in 18 MHz TX and RX bands
      • RF Frequency Stability 0.01 %
      • RF Sensitivity < 0.7 æV for 12 dB SINAD
      • Squelch Quieting 90 dB
      • Squelch Threshold 20 dB SINAD About 1.0 æV
      • Storage Temperature -4° F to 130° F (-20° C to 55 °C
      • Type Dual Conversion Super heterodyne, Synthesized, FM, 712 channels
      • Weight 1.31 lbs (0.6 kg)
      • Width 3.75" (95.3 mm)

    Add Accessories for your TR-825-B4R: