Clear-Com RS-603 2-Channel Wired Intercom Belt Pack

Description

Used ClearCom RS-603 belt packs in solid condition. Listing is for ONE(1) pack but THREE(3) are Available, ALL with same issue. Beltpacks work on Channel A. Call B seems to be stuck on. A simple fix? Something you may not be bothered by? Being sold AS IS. Minor cracks on casings. Coms also have small engravings from past ownership.
Photos of all 3 pictured.
Condition is comparable pack to pack.
WILL GET COMs at random. (Unless you purchase all 3)
Features:
Two intercom channels
Local input for program audio
Program audio volume control
3-pin male XLR intercom connectors
Choice of headset jacks for use with Clear-Com-TW or RTS-TW systems, monaural or binaural audio
Specifications:
General
Amplifier Design: I.C. amplifiers, including solid-state digital switching and signaling circuits. Current-limited and short-circuit protected.
Signal to Noise: >75 dB
Bridging Impedance: >15k
Line Level: -14 dB, +5 dB max.
Sidetone Adjust: >35 dB
EMI and RFI rejection: >60 dB
Microphone Pre-Amplifier
Headset Mic Impedance: 200 ohms
Gain, mic to line: 41 dB (dynamic)
Limiter Range: 26 dB
Frequency Response: 200 Hz – 12 kHz contoured for intelligibility
Program Input
Program input Balanced, transformer isolated
Input sensitivity: –20 dBv to +10 dBv
Frequency response 50 Hz – 18 Hz, ± 2 dB
Headphone Amplifier
Load Impedance: 50 - 2,000 ohms
Output Level: +17 dBv before clipping
Distortion: <0.1% THD @ 1 kHz
Gain, line to output: +34 dB
Frequency Response: 100 Hz - 18 kHz, ±2dB
Connectors
Intercom Line: (2) 3-pin XLR–M–F
Headset: 4-pin XLR–M
Power Requirements
55mA quiescent
62mA average talk, both channels simultaneously
50mA talk with signaling, both channels simultaneously
DC Voltage Range: 12-32 volts
Environmental
Operating Temp. Range: 0°C - 70°C (32°F - 158° F)
Humidity: 0 - 90% relative humidity
Dimensions
4.58"H x 3.73"W x 1.34"D (116 x 95 x 34 mm)
Weight
7.8 oz. (0.22 kg)