Nmdc Limited

Nmdc Limited has published Bids Are invited for 2200000890 - TABLE TOP MICROPHONE CHAIRMAN UNIT Microphone: 63dBV/µbar (7.5mV/Pa)Current Consumption: < 50mA Max.,Mic Auto Switch-Off Time: 75 seconds approx.Input/Output: Line/Line, Headphone Speaker: Max Input 300mWControls:Priority Switch, Talk Switch, Speaker Volume Control, Headphone Volume ControlDimensions: W118 × H70 × D160 mm Make:-Ahuja,Shure,Bosch , 2200000891 - TABLE TOP MICROPHONE DELEGATE UNIT Microphone: -63dBV/µbar (7.5mV/Pa)Current Consumption: < 50mA Max.,Mic Auto Switch-Off Time: 75 seconds approx.Input/Output: Line/Line, Headphone Speaker: Max Input 300mWControls: Talk Switch, Speaker Volume Control, Headphone Volume ControlDimensions: W118 × H70 × D160 mm Make:-Ahuja,Shure,Bosch , 2200000892 - UHF HANDHELD CORDLESS MIC WITH RECEIVERTRANSMITTERRF Output Power: 10mW (Max.),Frequency Stability: ±0.005%,Microphone Element: Dynamic, Cardioid,Frequency Response: 50-15,000HzPower Requirement: 3V (2 × 1.5V AA Pencil Cells),Current Consumption: = 150mAIndication: Channel Frequency Display Receiver,Audio Output: Bal. 0dBu, Unbal. -10dBuS/N Ratio: 100dB,Distortion: =1%,Frequency Response: 50-15,000HzIndications: LEDs for RF & Audio Signal, Channel Frequency DisplayDimensions: W210 × H47 × D165 mm Make:-Ahuja,Shure,Bosch , 2200000893 - SPEAKER SYSTEM (Ceiling Speakers or wall mount) Input Power: 40W RMS,Power Taps on 100V: 40/20/10W,Impedance: 250/500/1kOFrequency Response: 90-18,000Hz,SPL at 1kHz (1W/1m): 93dBSpeaker: Woofer 200mm (8”), Tweeter 25mm (1”)Dimensions: ø272 × H120 mm Make:-BOSCH/BOSE/JBL , 2200000894 - SYSTEM CONTROL UNIT( Central Controller)Line Output 1 & 2: 17.5V DC/3A Max.; -34dBV (20mV)Power Output: 50W RMS at 2% THD, 90W Max.Inputs:3×Mic 0.65mV/4.7k?, 1×Aux 100mV/470k?Frequency Response: 60-14,000Hz (± 3dB),S/N Ratio: > 60dBTone Controls: Bass: -10dB at 100Hz, Treble: -10dB at 10kHzPreamp Output: 200mV/600?,Line Output: 1V/1k?Send Output: 200mV/600?,Return Input: 200mV/10k?Speaker Output: 4?, 8?, 16?, 70V & 100V Make. Last date of submission for this tender is 2021-12-16. This is a Switch Supply tender in null, Chhattisgarh