Ahuja AWM 520VH handheld dynamic wireless microphone and table top receiver with telescopic antenna

Wireless Microphone Model No. AWM520VH

KTI14002001WLMH

Product Description

The Ahuja AWM 520VH is a single-channel VHF high-band wireless public address microphone system comprising a handheld transmitter and a compact table-top receiver.

Brand: Ahuja
Model: AWM 520VH
System Type: Single-channel VHF high-band wireless PA microphone system
Microphone Polar Pattern: Dynamic unidirectional (Cardioid)
Modulation Mode: FM
RF Output Power: 10 mW (Max.)
Frequency Response: 40 Hz to 13,000 Hz
Max Deviation: ±25 kHz
Receiver Audio Output: 0–50 mV adjustable via 6.3 mm (1/4") phone jack
Signal-to-Noise Ratio: >80 dB
Total Harmonic Distortion:

KTI14002001WLMH

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Product Details
Available Brands	Ahuja
Unit	SETS
HSN Code	85181000
Weight	0.45 kg
Dimension	L 15.2 x W 11 x H 4 cm cm ft in m
Warranty	12 Months No-Onsite Warranty
Tags/categories	Automation PA Solutions Mikes Microphones

Usually dispatched within 2 days

About this product .

The Ahuja AWM 520VH wireless public address system is engineered for reliable voice reproduction in commercial and institutional sound reinforcement applications. The package consists of a lightweight handheld wireless transmitter and a dedicated table-top VHF receiver unit.
The handheld dynamic transmitter utilizes a unidirectional cardioid pickup pattern that focuses on the primary vocal source while suppressing ambient background noise and acoustic feedback. Operating under FM modulation with a frequency response spanning 40 Hz to 13,000 Hz and a maximum RF output power of 10 mW, it delivers clean, articulate speech transmission over standard operating distances.
The companion table-top receiver incorporates noise squelch circuitry and an adjustable telescopic antenna to maintain clean signal demodulation and eliminate RF hiss. With a frequency stability of ±0.005%, signal-to-noise ratio exceeding 80 dB, and total harmonic distortion under 0.5%, the receiver ensures high audio fidelity across variable venue conditions.
For interfacing with sound amplification equipment, the receiver is equipped with a rear-panel 6.3 mm (1/4") unbalanced phone jack offering an adjustable output level of 0 to 50 mV. It connects directly to public address amplifiers, audio mixing consoles, and active podium speaker systems using the supplied audio connection cable.
The system is manufactured across six distinct factory-preset VHF frequencies, allowing simultaneous multi-channel operation without mutual RF interference in adjacent meeting halls or classrooms. Transmitter operation is powered by a standard 1 × 9V battery (they are not included) with an energy-efficient current drain under 30 mA, while the receiver operates from 220V–240V AC 50 Hz power via the provided 9V DC external adapter.
Typical deployment settings include educational institution auditoriums, corporate seminar rooms, conference halls, houses of worship, and presentation podiums where wireless mobility is required.

Product Information .

Worship Places Shopping Malls, Showrooms Conference Rooms Auditorium Conference Hall Event Management

System Compatibility and Hardware Interfacing for Ahuja AWM-520VH

Audio System Integration & Interface Compatibility

The Ahuja AWM-520VH wireless microphone system is engineered for seamless integration across commercial and industrial public address (PA) frameworks. The table-top receiver is equipped with a dedicated rear-panel 6.3 mm (1/4") phone jack that provides an adjustable audio output range of 0 to 50 mV. This output specification ensures direct interfacing with standard unbalanced 6.35 mm microphone inputs as well as auxiliary/line-level preamplifier inputs on PA mixing consoles, booster amplifiers, integrated mixer-amplifiers, active/powered speakers, and dedicated lectern or podium sound installations.

Because the receiver delivers clean audio with a total harmonic distortion under 0.5% and a signal-to-noise ratio greater than 80 dB, it matches impedance and signal level requirements across commercial audio equipment without introducing input stage clipping or signal degradation. A compatible 6.3 mm patch cable is supplied with the system to facilitate direct connection between the receiver output and destination audio hardware.

Multi-Channel VHF Frequency Deployment

For facilities requiring multi-microphone setups—such as multi-room educational institutions, corporate training complexes, and adjacent auditorium zones—the Ahuja AWM-520VH is manufactured across six distinct factory-preset VHF carrier frequencies. This multi-frequency design allows system planners to select unique operating frequencies for distinct physical zones or stages, eliminating RF cross-talk and channel collision. Operating on stable VHF high-band frequencies with a tight frequency stability tolerance of ±0.005%, multiple individual AWM-520VH units can operate within the same facility when paired with their corresponding matched handheld transmitters.

Power Supply & Electrical Compatibility

The system components integrate into standard electrical and battery power environments:

Receiver Power Requirement: The table-top receiver operates on 9V DC and includes a dedicated external AC adapter designed for standard 220V–240V AC, 50 Hz power networks. This makes it fully compliant with standard regional mains power infrastructure across commercial venues.
Transmitter Power Requirement: The handheld transmitter requires a 1 × 9V battery (they are not included) to operate. With an energy-efficient current consumption rating of under 30 mA, standard 9V battery (they are not included) cells provide steady, long-lasting performance for continuous speaking presentations.

Acoustic & Application Environment Compatibility

The dynamic cardioid transmitter element is tuned with a 40 Hz to 13,000 Hz frequency response and a maximum deviation of ±25 kHz, delivering high speech intelligibility while minimizing acoustic feedback in high-reflectance spaces. The receiver integrates dedicated noise squelch circuitry and a fully extendable telescopic antenna, ensuring stable VHF link reception up to the full operational boundary of the 10 mW transmitter. This makes the AWM-520VH hardware profile ideally suited for commercial PA installations, seminar halls, places of worship, auditoriums, stadia, and conference venues.

Ahuja AWM-520VH Installation, Interconnection, and Setup Guide

System Overview & Mounting Considerations

The Ahuja AWM-520VH wireless PA microphone system comprises a compact table-top receiver and a handheld dynamic cardioid transmitter. Proper physical positioning of the receiver unit (measuring 152 mm W × 40 mm H × 110 mm D with a net weight of 0.20 kg) is critical for optimal RF stability and clear audio capture. Install the table-top receiver on a stable, flat surface, podium shelf, or rack tray positioned within direct line-of-sight of the transmitter's intended operating area.

To preserve signal integrity and avoid transmission dropouts, do not place the receiver inside fully enclosed metal cabinets, behind structural steel columns, or directly adjacent to high-EMI sources such as power transformers, variable frequency drives, or digital switching hardware.

Receiver Antenna Deployment and Power Connection

Follow these steps to establish electrical power and RF reception on the table-top receiver:

Antenna Deployment: Fully extend the integrated telescopic antenna to its maximum length. Position the antenna vertically or angled away from metal obstructions to ensure unobstructed VHF signal capture and allow the internal noise squelch circuitry to operate at peak efficiency.
AC Adapter Connection: Connect the barrel plug of the supplied external AC adapter into the 9V DC input port on the receiver rear panel.
Mains Connection: Plug the external AC adapter into a stable 220V–240V AC 50 Hz power outlet. Verify the receiver power status indicator illuminates to confirm active DC supply.

Audio Signal Interconnection

The Ahuja AWM-520VH integrates a standard 6.3 mm (1/4") phone jack audio output located on the rear panel of the receiver. This port provides an adjustable output level ranging from 0 to 50 mV, engineered to match the input sensitivity of standard public address mixers, commercial booster amplifiers, or powered active speaker enclosures.

Insert one end of the supplied 6.3 mm connection cable into the receiver rear-panel output jack.
Connect the opposite 6.3 mm phone plug into an unbalanced microphone-level or line-level input jack on your PA mixer, amplifier, or audio distribution console.
Adjust the receiver output level control to achieve proper gain structure, ensuring a signal-to-noise ratio greater than 80 dB and preventing clipping or total harmonic distortion above the rated 0.5% ceiling.

Handheld Transmitter Battery Setup and Operation

The handheld wireless transmitter (measuring Ø 48 mm × 240 mm and weighing 0.25 kg without power cell) operates using a single 9V battery (they are not included). To prepare the transmitter for operational service:

Battery Installation: Unscrew the lower battery compartment cover of the handheld body. Insert one fresh 9V battery (they are not included), strictly observing the polarity markings inside the housing. Securely fasten the battery compartment sleeve back onto the microphone body.
Power Switching: Slide the three-position control switch from 'OFF' to 'ON'. Observe the integrated red LED status indicator: a momentary glow indicates successful RF transmission activation at the rated 10 mW maximum RF output power.
Low Battery Monitoring: If the red LED indicator transitions to a permanent, continuous glow during startup or operation, the 9V battery (they are not included) has dropped below operational voltage thresholds and must be replaced immediately.
Mute Functionality: Utilize the center 'MUTE' position on the three-position switch during live presentations to silence audio transmission instantly while maintaining active RF carrier lock with the receiver squelch circuit.

Multi-System Integration & Commissioning

When engineering multi-channel public address installations across auditoriums, conference centers, or multi-room venues, note that the Ahuja AWM-520VH is produced across six distinct factory-preset VHF carrier frequencies. Ensure that co-located audio channels operate on separate preset frequencies to avoid adjacent-channel interference. Complete a thorough walk-test across the intended operational zone to verify stable carrier lock and uniform frequency response (40 Hz to 13,000 Hz) before final commissioning.

Installation Reference Specifications

Parameter	Transmitter Specification	Receiver Specification
Power Source	1 × 9V battery (they are not included) (

Maintenance, Power Management & Upkeep Guidelines for Ahuja AWM-520VH

Transmitter Battery (they are not included) Management and Status Monitoring

The Ahuja AWM-520VH handheld dynamic transmitter operates with an internal power draw of under 30 mA powered by a single 1 × 9V battery (they are not included). Continuous operational readiness requires routine monitoring of the multi-function red LED status indicator located adjacent to the three-position slide switch (ON/MUTE/OFF). During standard turn-on, the red LED illuminates with a momentary flash to indicate proper RF stage activation at 10 mW maximum output power. If the red LED remains illuminated with a steady, permanent glow during operation, it indicates a low battery (they are not included) voltage condition below standard operating thresholds.

When the steady low battery (they are not included) warning appears, immediately power off the handheld unit via the slide switch and replace the depleted 1 × 9V battery (they are not included) with a fresh 9V battery (they are not included). Ensure correct terminal polarity alignment when seating the replacement 9V battery (they are not included) into the 240 mm long, Ø 48 mm transmitter body. If the wireless microphone system is placed in storage or removed from active deployment for extended periods, remove the 9V battery (they are not included) completely to avoid terminal oxidation or electrolytic leakage inside the 0.25 kg transmitter housing.

Receiver Alignment and Telescopic Antenna Upkeep

The compact table-top receiver (measuring 152 mm W × 40 mm H × 110 mm D with an unladen weight of 0.20 kg) relies on direct VHF signal acquisition via its rear-mounted telescopic antenna. To prevent RF signal dropouts, phase cancellation, or reduced transmission range across facilities, follow these structural checks during routine maintenance:

Antenna Deployment: Ensure the telescopic antenna is fully extended and oriented vertically during active operation to maintain the factory ±0.005% frequency stability.
Obstruction Clearance: Keep the receiver chassis free from metallic enclosures, equipment racks, or dense physical barriers that attenuate VHF high-band transmissions.
Power Supply Inspection: Verify the integrity of the external AC adapter cable and rear DC barrel connection supplying 9V DC from the standard 220V–240V AC 50 Hz mains input.
Squelch Operation: Verify that the integrated noise squelch circuitry effectively mutes background RF hiss when the transmitter is switched to MUTE or OFF.

Audio Output and Interconnect Servicing

The receiver audio stage outputs an adjustable 0–50 mV signal through a standard 6.3 mm (1/4") phone jack on the rear panel. Periodically inspect the supplied 6.3 mm patch cable for physical wear, strain, or corrosion on the jack contacts to preserve the system's signal-to-noise ratio (>80 dB) and low total harmonic distortion (

Industrial, Commercial, and Institutional Use Cases for Ahuja AWM-520VH

The Ahuja AWM-520VH is a dedicated single-channel VHF high-band wireless public address (PA) microphone system engineered for reliable voice transmission across institutional, commercial, and live event facilities. Combining a handheld dynamic transmitter with a compact table-top receiver, the system interfaces directly with commercial PA amplifiers, audio mixing consoles, and powered speakers equipped with 6.3 mm (1/4") input jacks.

Educational Institutions and Corporate Seminar Halls

In academic lecture halls, training centers, and corporate seminar rooms, the Ahuja AWM-520VH delivers clear, intelligible vocal reinforcement. The transmitter's dynamic cardioid (unidirectional) polar pattern isolates the speaker's voice while suppressing ambient room reverberation and off-axis acoustic feedback. Presenters benefit from the handheld unit's 3-position slide switch (ON/MUTE/OFF), allowing seamless audio muting during pauses or media playback without dropping the RF link.

Auditoriums, Theatres, and Stage Presentations

For auditorium stages and multipurpose halls, the system provides cable-free mobility backed by a 10 mW maximum RF output power and an operational frequency response spanning 40 Hz to 13,000 Hz. The table-top receiver incorporates internal noise squelch circuitry and a fully extendable telescopic antenna to eliminate static and preserve audio integrity (signal-to-noise ratio >80 dB with total distortion

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