True Diversity Wireless Headworn Microphone

Model# AI-PRO 227H

With 2 independent RF sections for greater reliability, this wireless headworn microphone system is true professional quality.
Details
<1>PRO-R2 receiver <>ATW-T27 transmitter <>PRO 8HEcW headworn microphone <1>True diversity reception and full FM deviation <>Choice of 20 VHF frequencies <>InvisibleLink® circuitry delivers optimum sound quality <>Ground-lift switch and adjustable squelch control <>Balanced and unbalanced audio output jacks <>Receiver mounts in a single 19" rack space <>Dual-power battery-save switches on transmitters <>ATW-T28 handheld microphone/transmitter features a Hi-ENERGY® dynamic unidirectional elementwith superior internal shock mounting <>True diversity reception with 2 independent RF sections for greatest reliability <>Choice of 20 VHF frequencies for minimum interference <>Adjustable squelch control on receiver eliminates unwanted RF noise <>Individual components available separately

Pro-R2 receiver offers both balanced (XLR-type) & unbalanced (1/4” phone jack) audio outputs.Includes mounting brackets to mount 19” metal receiver case.UniPak transmitter features a “Hi/Lo” battery save switch to prolong battery life & reduce interference.UniPak transmitter w/ durable HRS connector is compatible w/ a wide range of A-T mics.

Overall System
	Operating Frequency	VHF high band, 169 MHz to 216 MHz
	Frequency Stability	±0.005%, single-frequency crystal-controlled
	Modulation Mode	FM
	Maximum Deviation	±30 kHz, traveling frequencies ±15 kHz
	Operating Range	200' minimum
	Operating Temperature Range	40° F (4° C) to 110° F (43° C)
	Frequency Response	100 Hz to 15 kHz
PRO-R2 Receiver
	Receiving System	Dual independent receivers, automatic-switching diversity reception
	Image Rejection	>=60 dB
	Signal-to-noise Ratio	95 dB at 10 kHz deviation (IEC-weighted), maximum modulation 15 kHz
	Total Harmonic Distortion	<=1% (10 kHz deviation at 1 kHz)
	Sensitivity	10 µV for 60 dB S/N (IEC-weighted)
	Audio Output	Unbalanced: 350 mV (at 1 kHz, ±10 kHz deviation, 10k ohm load) Balanced: 220 mV (at 1 kHz, ±10 kHz deviation, 10k ohm load)
	Output Connectors	Unbalanced: 1/4" phone jack Balanced: XLRM-type
	Power Supply	12-18V DC, 350 mA, with provided AC adapter
	Dimensions	16.93" (430.0 mm) W x 1.92" (48.8 mm) H x 7.28" (185.0 mm) D
	Net Weight	5.5 lbs (2.5 kg)
	Accessories Included	Two whip antennas, rack-mount adapters, AD1205A AC adapter
ATW-T27 UniPak™ Transmitter
	RF Power Output	50 mW Max
	Spurious Emissions	Under federal regulations
	Dynamic Range	>=90 dB
	Input Connections	High impedance, low impedance, bias
	Battery (not included)	9V (NEDA type 1604) alkaline
	Current Consumption	30 mA typical
	Battery Life	Approximately 15 hours in High position, approximately 20 hours in Low position
	Dimensions	2.56" (65.0 mm) W x 4.33" (110.0 mm) H x 1.00" (25.4 mm) D
	Net Weight (without battery)	2.8 oz (78 grams)

PRO 8HEx Specifications
Element			Impedance
	Neodymium Dynamic			600 ohms
Polar Pattern			Weight
	Hypercardioid			2.1 oz (60 g)
Frequency Response			Output Connector
	200 - 18,000 Hz			XLRM-type on cable
Open Circuit Sensitivity
	-55 dB (1.7 mV) re 1V at 1 Pa