Two completely independent receiver channels in a single unit.

The Audio Technica ATW-1822 camera mount wireless microphone system provides an extremely flexible, professional, and easy-to-use portable wireless solution. It includes the ATW-R1820 dual-channel receiver and two ATW-T1802 plug-on transmitters. The ATW-1822 wireless system offers UHF reception of 996 user-selectable frequencies in 25 kHz steps. It also features automatic frequency scanning, Tone Lock squelch, back-lit LCD, soft-touch buttons, headphone monitor output with independent level control, and durable metal construction.

ATW-R1820 single-channel receiver
The ATW-R1820 dual receiver has two completely independent receiver channels in a single unit. Dual balanced outputs enable signals to be mixed, or independently assigned to each output. Independent audio level controls provide flexible audio mixing and monitoring possibilities.

ATW-T1802 plug-on transmitter
The ATW-T1802 plug-on transmitter features a locking XLR connector for adapting dynamic and condenser microphones and selectable high and low transmission modes to conserve battery life/maximize power. The ATW-T1802 Plug-on Transmitter also provides power to condenser microphones rated to operate on 12V phantom power or less.

Audio-Technica ATW-1822 1800 Series Dual Channel UHF Wireless System Features:

Two completely independent receiver channels in a single unit, for simultaneous operation of two microphones
Compact dual receiver is easy to mount on a camera
True Diversity operation for resistance to multi-path interference and dropouts
UHF reception with 996 frequencies selectable in 25 kHz steps
Automatic frequency scanning for easy selection of open channels
Tone Lock squelch system eliminates interference when transmitter is off
Two independent balanced outputs
Headphone monitor output with independent level control
Battery fuel-level indicators on transmitters and receiver
Soft-touch controls for easy frequency selection
LCD frequency and battery status display with backlight
Antenna and AF Peak LED indicators
Dual-channel receiver can operate in single-receiver mode to extend battery life when only one audio channel is in use
Transmitters operate in low or high transmission modes to conserve battery life/maximize power
Easy, user-friendly operation
Clear, natural sound quality
Powered by AA batteries or by external 12V DC power (not included)
System components of the 1800 Series and 3000 Series Wireless Systems can be used interchangeably

Audio-Technica ATW-1822 1800 Series Dual Channel UHF Wireless System Specifications:

ATW-R1820 Dual-channel receiver
Receiving System: Dual independent RF sections, automatic-switching diversity
Image Rejection: >50 dB typical
Signal-to-Noise Ratio: 104 dB at 30 kHz deviation (A-weighted), maximum modulation 37 kHz
Total Harmonic Distortion: <1% (ñ10 kHz deviation at 1 kHz)
Sensitivity: 25 dBuV, (S/N 60 dB at 5 kHz deviation, A-weighted)
Audio Output (balanced): 27 mV (at 1 kHz, ñ5 kHz deviation)
Output Connector: 3-pin mini XLR (TA3M-type)
Monitor Headphone Output (typical): 35 mW max., 32 ohm load
Monitor Headphone Jack: 3.5 mm TRS, signals on both Tip and Ring
External Power Requirements: 12V DC nominal, 500 mA
Batteries (not included): six 1.5V AA alkaline (not included)
Current Consumption (battery): 600 mA typical
Battery Life: 6 hours typical, depending on battery type and use pattern
Dimensions: 3.35" (85.0 mm) W x 5.24" (133.0 mm) H x 1.42 (36.0 mm") D
Net Weight: (without batteries) 15.0 oz. (425 grams)
Accessories Included: Two flexible UHF antennas; two 18" TA3F to XLRM
output cables; belt pouch

ATW-T1802 plug-on transmitter
RF Power Output: High: 30 mW; Low: 10 mW, nominal
Spurious Emissions: Under federal regulations
Input connector: 3-pin locking XLRF-type
Batteries (not included): Two 1.5V AA alkaline
Current Consumption: High: 180 mA; Low: 160 mA, typical
Battery Life: Approximately 6 hours (High); 8 hours (Low), depending on battery type and use pattern
Dimensions (W x H x D): 1.57" x 4.37" x 1.57", 40.0 x 110.0 x 40.0 mm
Net Weight (without batteries): 7.0 oz (199 grams)