Audio-Technica ATW-R1820 プリント

1800 series wireless systems (dual-channel)

Dual-channel Frequency-agile UHF Camera-mount Receiver

The 1800 Series dual-channel, frequency-agile true diversity UHF wireless 

receiver provides a new standard for audio and RF performance with 

user-friendly features and flawless operation for camera-mount and special 

remote applications. The systems provide the audio quality and reliability 

necessary for the most demanding requirements of today’s video and 

audio systems, with two independent receivers in one small housing.

The ATW-R1820 dual-channel receiver incorporates two completely 

independent diversity receiver sections along with an antenna distribution 

system and audio mixer in a single compact package. Each receiver 

incorporates automatic frequency scanning which eliminates the need for 

searching for clear channels and automatically selects the most appropriate 

frequency for each channel’s operation. The flexibility in programming 

both receivers and transmitters allows the user to customize this wireless 

system to the needs of virtually every application. The internal antenna 

distribution system allows for a single pair of receiving antennas to feed 

both receiver sections. True Diversity reception with automatic logic 

circuitry within each receiver selects the strongest RF signal. The 

top-mount antennas are removable allowing for different types of 

antennas and antenna accessories to be used. All components have an 

easy to read LCD display with back lighting for easy function monitoring. 

An advanced digital Tone Lock

™

 squelch system provides enhanced 

rejection of interference on each of the two receivers. Multi-function LED 

indicators are provided for diversity, power and peak signal indication. The 

receiver’s compact design and included pouch with stainless steel clip 

allow for easy attachment to cameras, sound mixer bags or the user’s 

belt. Designed to operate on six standard AA alkaline batteries or external 

12V DC, the dual receiver’s power switch allows for one receiver section 

to be switched “off” if not being used to increase battery life. Dual 

balanced outputs with built-in mixer and output select controls allow the 

audio from each receiver to be routed to independent outputs or mixed 

together into a single output for enhanced flexibility in the field. Full 

headphone confidence monitoring with level control and output selector 

enables the operator to monitor each receiver’s audio. All audio output 

connections are standard mini-XLRM type connections with TA3F to 

XLRM-type adapter cables included with the system. 

Additionally, the frequency configurations used in the 1800 Series 

components allows them to be interchangeable with the Audio-Technica 

3000 Series components. 

The frequency-agile FM dual-channel wireless receiver shall be part of  

a wireless microphone system consisting of a dual receiver and the 

appropriate transmitters. Operating in the UHF bands of either 541.500–

566.375 MHz or 655.500–680.375 MHz the system shall be capable of 

operating on any of 996 PLL-synthesized frequencies per band (adjustable in 25 

kHz steps).

The all-metal receiver shall be designed for camera mount or portable 

operation and shall consist of two complete wireless receivers along with 

an integral antenna distribution system allowing the two receivers to 

share a single set of antennas. Each of the two receivers shall utilize True 

Diversity with automatic logic switching to choose the strongest RF 

signal appearing at either antenna. Each receiver section shall provide an 

automatic scanning function to select appropriate local usable frequen-

cies for proper wireless system operation. All configuration functions of 

the receiver shall be controlled by soft-touch controls on the receiver top. 

A selector switch with lockout/hold function shall be provided for 

selecting which receiver section is controlled by the soft-touch controls. 

The receiver shall incorporate a four-position power switch allowing for 

direct selection of one or two receiver sections on internal batteries or 

external power. The receiver shall have LED operator indicators on the top 

panel for diversity operation (A-B) for each receiver section, power/peak 

indicators for each receiver and a dual channel control LED which shows 

which receiver is selected to the soft-touch controls for configuration and 

setup. A backlit LCD display shall be provided on the receiver for showing 

receiver battery status and selected frequency. A three-position select/

hold switch shall be provided to select which receiver appears on the 

display and is controlled by the soft-touch configuration controls. The 

switch shall incorporate a hold function to disable the soft-touch controls. 

An associated LED shall illuminate red when the select/hold switch is in 

the receiver 1 or 2 position and green when the switch is set in the hold 

position. The system will be equipped with an advanced Tone Lock

™

 

digital identification system. The receiver design shall provide totally 

silent audio output mute when the wireless transmitter is turned off or 

signal is lost to ensure that only the desired wireless microphone 

transmitter allows the receiver to be un-muted. The receiver shall 

incorporate a built-in audio mixing and monitoring section. This mixer shall 

allow for the two receiver sections to be mixed together to a single 

output connector, operate as independent outputs or select one of the 

receivers to appear at both audio outputs. Each receiver section shall be 

provided with an independent level control. Independent audio monitor-

ing shall be provided with monitor level control and monitor select 

(1-both-2). A headphone connector shall be provided on the bottom of the 

receiver. 

The receiver shall be able to be powered by 6 alkaline AA batteries or 12 

volts DC at 500 mA. Antennas shall be located on the top of the receiver