Two-channel UHF Wireless Beltpack

  • Operates in select frequency bands between 470-488MHz
  • Extremely light, durable cast magnesium
  • Durable, detachable antennas are secured to the beltpack via threaded post connectors
  • Low-profile volume control
  • Robust, distinguishable momentary latch talk button
Item Part Number:


Technical Specifications


RF Frequency Range: 470-488MHz

Power Requirement: 6 Alkaline “AA” Cells (NiMH optional)

Typical Battery Life Alkaline: 14 Hours (Continuous duty with talk light on)
Typical Battery Life – Nickel Metal Hydride (1500 mAh): 11 Hours (Continuous duty with talk light on)
Current Draw: 140 mA (Push-to-Talk, Talk On)
Temperature Range:  -4oF to 140oF (20oC to 55oC)
Dimensions: 3.75” W x 5.05” H x 1.65” D (9.5 cm x 12.8 cm x 4.2 cm)
Weight: 16 oz. (0.454 kg) with batteries 15 oz. (0.425 kg) with batteries
Transmit Antenna: 1/4 Wave (supplied), Screw type
Receiver Antenna: 1/4 Wave (supplied), Screw type
Frequency Response: 300 Hz – 8,000 Hz
Four-Wire Input:  N/A
Four-Wire Output: N/A
Clear-Com® Partyline Levels: N/A
RTS® Partyline Levels: N/A
Telex® Partyline Levels: N/A
Auxiliary Input: N/A
Auliliary Output: N/A


Type: Synthesized, 720 channels
Transmit Power:  WTR-680/WTR-670: 50 mW max. (auto-power reduction when close to base)
RF Frequency Stability:  0.005%
Modulation: FM, 40 KHz Deviation
Modulation Limiter: Peak-Responding Compressor
Modulation Frequency Range: 300 Hz -8,000 Hz +-2 dB
Microphone Audio Input: 30 W – 3,500 W
Microphone Input Sensitivity: 9 mV
Radiated Harmonics & Spurious: Exceeds FCC specifications
FCC Acceptance: Type accepted under FCC Part 74


Type:  Dual Conversion Superheterodyne, Synthesized, FM, 720 channels
RF Sensitivity: <0.7 mV for 12 dB SINAD
Signal-to-Noise Ratio: 95 dB
IF Selectivity: 3 dB at 230 KHz
Image Rejection: 70 dB or better
Squelch Quieting: 95 dB
RF Frequency Stability: 0.005%
Distortion: <1% at full deviation
Local Headset Output: 40mW output into 600 W (1% distortion)
FCC Acceptance: Notification under FCC Part 15


The FCC has finished its sale of the 600 MHz frequency bands in the United States, and has set a date of July 13, 2020, for wireless intercom users to cease operation in the 617-652 MHz and 663-698 MHz frequencies.

If you are in the US and planning on purchasing a WBS system, please order the following models:

Associated Products

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