Audio Technica - ATW-1812D

With UHF reception (996 frequencies user-selectable in 25 kHz steps), Audio-Technica's new 1800 Series camera-mount wireless microphone systems provide extremely flexible, professional, and easy-to-use portable wireless solutions. The 1800 Series is available in dual-channel and single-channel systems.

For simultaneous operation of two microphones, dual-channel 1800 wireless systems include the ATW-R1820 dual receiver with 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.

For those using a single microphone, the single-channel 1800 Series systems include the ATW-R1810 single-channel receiver.

1800 Series wireless systems come equipped with a choice of plug-on and body-pack transmitters. The ATW-T1801 UniPak™ body-pack transmitters feature a professional locking 4-pin connector compatible with all Audio-Technica Wireless Essentials® microphones.

The ATW-T1802 plug-on transmitters feature a locking XLR connector for adapting dynamic and condenser microphones. Both transmitters offer selectable high and low transmission modes to conserve battery life/maximize power.

Additional 1800 Series features include automatic frequency scanning, Tone Lock™ squelch, back-lit LCD, soft-touch buttons, headphone monitor output with independent level control, and durable metal construction.

• Two completely independent receiver channels in a single unit, for simultaneous operation of two microphones (dual-channel systems)
• Compact receiver is easy to mount on a camera
• 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 (dual-channel systems)
• Headphone monitor output with independent level control
• Battery fuel-level indicators on transmitters and receiver
• Soft-touch controls for easy frequency selection
• True Diversity operation for resistance to multi-path interference and dropouts
• 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 (dual-channel systems)
• 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
• System components of the 1800 Series and 3000 Series Wireless Systems can be used interchangeably**

Overall System Specifications:

• Operating Frequencies UHF Band D: 655.500 to 680.375 MHz
• Number of Channels 996 total per band (25 kHz increments)
• Frequency Stability ±0.005%, Phase Lock Loop frequency control
• Modulation Mode FM
• Normal Deviation ±10 kHz
• Operating Range 100 m (300') typical
• Operating Temperature Range 23° F (- 5° C) to 113° F (45° C)
• Frequency Response 70 Hz to 15 kHz

Receiver Specifications:

• 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% (±10 kHz deviation at 1 kHz)
• Sensitivity 25 dBµV, (S/N 60 dB at 5 kHz deviation, A-weighted)
• Audio Output Balanced: 27 mV (at 1 kHz, ±5 kHz deviation)
• Output Connector 3-pin mini XLR (TA3M-type)
• Monitor Headphone Output (typical) 35 mW max., 32 ohm load (per channel)
• Monitor Headphone Jack 3.5 mm TRS, signals on both Tip and Ring
• External Power Requirements 12V DC nominal, 500 mA
• Batteries ATW-R1820: Six 1.5V AA alkaline (not included); ATW-R1810: Four 1.5V AA alkaline (not included)
• Current Consumption Dual-channel Operation: 600 mA typical; Single-channel Operation 350 mA typical
• Battery Life Dual-channel Operation (ATW-R1820): 6 hours typical*
• Single-channel Operation (ATW-R1810): 10 hours typical*
• * depending on battery type and use pattern
• Dimensions ATW-R1820: 85.0 mm (3.35") W x 133.0 mm (5.24") H x 36.0 mm (1.42") D
• ATW-R1810: 75.0 mm (2.95") W x 125.0 mm (4.92") H x 32.0 mm (1.25") D
• Net Weight ATW-R1820: 425 grams (15.0 oz) (without batteries)
• ATW-R1810: 300 grams (10.5 oz) (without batteries)
• Accessories Included ATW-R1820: Two flexible UHF antennas; two 18" TA3F to XLRM output cables; belt pouch
• ATW-R1810: Two flexible UHF antennas; 18" TA3F to XLRM output cable; belt pouch

Plug-on Transmitter Specifications:

• RF Power Output High: 30 mW; Low: 10 mW, nominal
• Spurious Emissions Under federal regulations
• Input Connector 3-pin locking XLRF-type
• Batteries Two 1.5V AA alkaline (not included)
• 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 40.0 mm (1.57") x
• 111.0 mm (4.37") x
• 40.0 mm (1.57")
• Net Weight 199 grams (7.0 oz) (without batteries)