Digital Voice Recorder Tenders

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CTN :45351358

04 Jun, 2026 NA

Pudukkottai - Tamil Nadu

Tender For supply of lab equipments - purchase of lab equipments, ask modulation and demodulation kitspecifications: message signal1: 8-bit variable data,amplitude 5v. message signal 2: debounced data, amplitude low (0) and high (5 v). message signal 3: fixed data 25 khz, 12.5 khz, 6.25 khz, 3.12 khz, amplitude 5 v. carrier signal: sine wave, frequency 200 khz, amplitude 5 v. modulator type: switching modulator using analog switch / transistor switching ic. demodulator: envelope detector and lpf. comparator: lm311 based. supply voltage (board): +12 v, +5 v dc. supply current: 100 ma minimum. input voltage: 230 v ac, 50 hz. interface connectors: 2 mm banana socket., fiber optic communication trainer kitspecifications:power supply: 230 v ac 10%, 50 hz mains operation. built-in regulated power supply. optical transmitters: led transmitter: 660 nm. optical receivers: phototransistor / pin photodiode receiver. built-in signal conditioning and amplifier circuits. audio power amplifier with speaker/headphone output. comparator / pulse shaping circuit for digital signal recovery. test points for cro observation and signal monitoring. fiber media: multimode plastic optical fiber (pof). fiber patch cords with connectors. signal sources: built-in sine wave generator. built-in square wave / digital pulse generator. voice signal input through built-in microphone/audio source. trainer features: separate transmitter and receiver sections. on-board test points for signal observation. led indicators for signal monitoring. fault simulation facility. compact tabletop modular design. circuit diagram printed on pcb. bandwidth: analog bandwidth: up to 350 khz. digital bandwidth: up to 2.5 mhz. controls: variable signal amplitude control. variable frequency control. optical intensity adjustment. standard accessories: patch cords and connectors. power cord. audio connecting cable. user manual.

CTN :45334353

02 Jun, 2026 1.54 Lacs

Kolkata - West Bengal

Tender For construction of regional centre at new town, rajarhat, kolkata, w.b. (sh: repairing of existing audio amplifier and replacement of defective paging microphone in installed audio system).subwork/packages:repairing of existing audio amplifier etc.

CTN :45312004

08 Jun, 2026 18.85 Lacs

Alwar - Rajasthan

Tender For supply of it/elctronic/furniture (all item for smart class room) - supply of smart class room and related hardware, 75"" inch interactive flat panel display, digital podium with desktop, 3 kva online ups, ptz camera, dsp and audio mixer, power amplifier, handheld mic, lavalier microphone, wall/celling speakers, student chair with writing pad, table(teacher), high back chair(teacher), at conditionor2 ton, networking and electrification etc

Central Government/Public Sector

CTN :45212220

19 Jun, 2026 NA

Delhi - Delhi

Tender For corrigendum : supply of supply, installation & testing of digital voice recorder (dvr) system (qty. 15)

CTN :45098699

11 Jun, 2026 1.49 Crore

Delhi - Delhi

Tender For corrigendum : supply of display , brackets , device matrix , quad processor , annotator , mic , amplifier , audio speaker , digital podium , dsp , processor , switch , installation

CTN :45345725

17 Jun, 2026 69.00 Lacs

Kamrup - Assam

Tender For supply of bera with assr , hearing aid analyzer , otoacoustic emission , visipitch with speech software for analysis , electroglottograph , audiometer with battery set , pediatric audiometer , ear mold lab for making soft and hard mold , speech and language test and sotware , oral peripheral mechanism kit , public address amplifier , hearing aid repair kit , digital voice recorder , multimedia projector , vaghmi , pure tone audiometer , egg with suitable pc

CTN :45215155

29 May, 2026 NA

Kalol - Gujarat

Tender For bid to ras corrigendum : supply of audio amplifier (v3) (q2) , cables, converters and adapters (q3) , wired microphone (v2) (q2)

CTN :45325041

01 Jun, 2026 22.93 Lacs

Faridabad - Haryana

Tender For purchase of it equipment for setting up conference hall at mayor camp office. - peoplelink wired chairman unit microphone, peoplelink wired delegate unit microphone, peoplelink conference system, conference mic cable-8 pin extension cable for connecting microphone to controller 10 mtr, peoplelink pro audio dsp w/o ceiling mic, peoplelink 200w amplifier, peoplelink wallmount speaker (pair), peoplelink ai live board plus x86h, peoplelink elite 4k premium 12x, ops 15, 8 gb ram, 256 gb ssd (optional), 55 inch display pannel, speakercable 2.5 sqmm twisted pair speaker cable with soft rubber-pvc sheating 100 mtrs roll (#cable quantity may vary as per actual), connector, patch cables, hdmi cable and other accessories (lot), equipment rack: 24u equipment rack for housing all rack mountable equipment with internal wiring front glass door heat dissipation fans power distribution units etc, installation and commissioning, expenditure for water supply connection from d.h.b.v.n

CTN :45347730

06 Jun, 2026 NA

Jaisalmer - Rajasthan

Tender For supply of mic 580 lxr , mic adm 311 , mixer audio fmx 108dp , cordless mic with handset , amplifier connector bt , 3.5mm speaker jack connector 1 meter , water dispenser with cooling cabinet , fly catcher , led tv 65 inch , wall fan

Central Government / Public Sector

CTN :45332799

16 Jun, 2026 NA

Rupnagar - Punjab

Tender For sitc of audio visual video conferencing networking and conference components - 98 inch ifpd , pc , ptz camera , 75 inch ifpd , open pluggable specification ops , 65 inch smart display , chairman mic , delegate mic , pop-up box , control unit , 4ch video mixer , speaker and xlr cable , speaker 40 watt , mixer amplifier , digital audio processor , hdmi switcher , usb cable , mic cable , hdmi extender , wireless mics , epabx , ip phone , sip phone , epabx components , firewall cum router utm , network switch , core switch , access point ap , rack accessories , dome camera , bullet camera , 32ch nvr , 24 port switch , hard disk , cable and accessories , network rack , resident engineer re , installation commissioning programming and freight ) /bid number : gem/2026/b/7572814 * /dated: 26-05-2026 & & / bid document 1 / 43

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