Ahuja AWM 495VHL Microphones | Dual PA VHF Wireless Microphones

Ahuja AWM 495VHL Dual PA VHF Wireless Microphones

The Ahuja AWM-495VHL is a dual-channel VHF wireless microphone system that pairs two different transmitters with one two-channel receiver: a handheld microphone for speaking and audience work, and a tie-clip transmitter for hands-free presenting. That combination is what the VHL designation describes, and it suits presenters, teachers, trainers and hosts who need one person free to move and demonstrate while a second microphone stays available for questions, interviews or a co-presenter. Both channels run at the same time through the single receiver, which keeps setup to one compact unit on the desk or lectern.

Key features

• Dual-channel VHF wireless system with handheld and tie-clip transmitters
• Handheld transmitter with dynamic cardioid element, 50 to 12,000 Hz
• Tie-clip transmitter with omnidirectional condenser element, 80 to 15,000 Hz
• Quartz-crystal controlled receiver with plus or minus 0.005 percent frequency stability
• Separate volume control and audio output options per channel
• Signal-to-noise ratio greater than 80 dB and distortion below 0.5 percent
• Red power LED and green RF reception LED for each channel
• Telescopic receiver antenna

Two transmitters for two jobs

The handheld transmitter uses a dynamic cardioid element, the pattern that rejects sound arriving from the sides and rear, which helps keep feedback under control when the user is standing near loudspeakers. Its 50 to 12,000 Hz response covers the full speaking voice. The tie-clip transmitter uses an omnidirectional condenser element with an 80 to 15,000 Hz response and its own volume control; clipped to clothing, it picks up the voice evenly as the presenter turns and moves, leaving both hands free for demonstrations, writing or handling exhibits. Maximum RF output power is 15 mW, modulation is FM, and the system dynamic range is 80 dB. Each transmitter runs on two 1.5 V AA cells, giving a 3 V supply.

Receiver performance

The receiver is quartz-crystal controlled, holding frequency stability to plus or minus 0.005 percent, and its specification of greater than 80 dB signal-to-noise ratio with less than 0.5 percent distortion and a 50 to 15,000 Hz frequency response means the received speech stays clean at the output. Audio output is 0 to 55 mV into 1 kOhm. Each channel has its own volume control, and the receiver provides separate channel outputs alongside a mixed output, so the two microphones can either be balanced at the receiver itself or sent individually to a mixer. A red LED shows power and a green LED confirms RF reception on each channel, making it obvious at a glance whether both transmitters are being received. The receiver runs from a 240 V AC adaptor and uses a telescopic antenna.

Size, setup and everyday use

The handheld transmitter measures 55 mm diameter by 248 mm long and weighs 180 g without batteries. The tie-clip transmitter body measures W67 x H32 x D95 mm and weighs 60 g without battery, light enough to clip to a belt or waistband without dragging. The receiver measures W230 x H42 x D150 mm and weighs 353 g. In use, the receiver belongs on a clear surface with its antenna raised, fresh AA cells should be fitted before an event, and the coverage area should be walked and tested before the audience arrives. For classrooms, training rooms, houses of worship and community programmes that need a handheld and a hands-free microphone working together, the AWM-495VHL provides both in one straightforward VHF system.