Personal PAWideband Receiver, Model PPA R7-4NA

Description:

The Personal PA R7-4NA is a four-channel wide-band re-ceiver pre-tuned to frequencies 72.1, 72.5, 72.9, and

75.7MHz. It features a channel select knob, volume control on/off switch, and an earphone/charging jack. Built in an impact resistant case, the R7-4NA is field tunable and will operate up to 32 hours with a single 9V non- rechargeable alkaline battery.

Specificaitons:

Dimensions & Weight:

3-5/8" L x 2-3/8" W x 7/8" H

 

(92.1 mm x 60.3 mm x 22.2 mm);

 

3.2 oz (90 g) with battery

Color:

Gray

Battery Type:

9 Volt, Eveready 216 Carbon,

 

Eveready 522 Alkaline, or

 

BAT 003 NiMH Rechargeable

Battery Drain:

14 mA, nominal

Battery Life:

32 hours with Eveready 522,

 

6 hours/charge with BAT 003

FCC ID:

CNM R7, CNM R74Y

Operating Frequency:

Pre-tuned, adjustable, 72 MHz-76 MHz *

Intermediate Frequency:

75 KHz

FM Deviation:

75 KHz

De-Emphasis:

75 uS

AFC Range:

± 300 KHz

Sensitivity:

2 µV at 12 dB Sinad with squelch defeated

Squelch:

Squelches at 10 µV for minimum

 

50 dB S/N ratio

Input Overload:

20 mV

Frequency Response:

100-10 KHz, ± 3 dB

Signal-to-Noise Ratio:

50 dB at 10 µV

Receive Antenna:

Integral with earphone/headphone cord

Audio Output:

250 mW, max. at 16 Ohms

Output Connector:

3.5 mm mini phone jack, also serves as a charging jack

 

for rechargeable battery

Earphone:

Earbud-type with foam cushion,

 

3.5 mm plug, 32 Ω (Other styles available)

R7-4NA Channel Selector

4-position, rotary switch

Warranty:

5 years, parts and labor

 

90 days on cords, earphones, heaphones, batteries,

 

and other accessories

Earphone

™On∫ Indicator LED

 

Channel Switch

Jack

 

 

 

 

 

EAR/CHG

Volume

1

2 3

4

 

 

 

 

 

 

1

 

 

 

On/Off

 

Channel

Volume

 

 

Control

 

 

 

 

 

R7-4NA Top

Williams Sound

R7-4NA Front

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Williams Sound ®

©2005, Williams Sound Corp. MCAT 037A

Helping People Hear

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Williams Sound PPA R7-4NA specifications Description, Specificaitons

PPA R7-4NA specifications

The Williams Sound PPA R7-4NA is a remarkable personal listening device that caters to the diverse needs of users in various settings, such as educational institutions, theaters, and places of worship. This portable assistive listening system is designed to enhance auditory experiences and ensure that everyone can engage fully with audio content, regardless of their hearing capabilities.

One of the hallmark features of the PPA R7-4NA is its advanced digital signal processing technology. This technology provides superior sound quality, enabling users to enjoy clear and crisp audio without distortion. The device operates within a robust frequency range, ensuring compatibility with various sound sources, whether they are microphones, televisions, or other audio outputs.

The PPA R7-4NA is equipped with a four-channel receiver, allowing it to support multiple users while maintaining exceptional audio fidelity. This feature is particularly beneficial in classroom settings or during group events, where a large number of participants may require assistive listening support. Users can easily switch between channels to find the best audio feed, providing them with flexibility and independence.

Another significant characteristic of the PPA R7-4NA is its lightweight, ergonomic design. The device is built for comfort, allowing users to wear it for extended periods without fatigue. Its intuitive controls and straightforward interface make it accessible for users of all ages, including those who may not be technologically savvy. This user-friendly design encourages greater adoption among individuals who may benefit from assistive listening technology.

Furthermore, the PPA R7-4NA features a robust transmission range, ensuring that users can access sound without interruptions or dropouts. This reliability is essential for applications in environments where background noise may be prevalent, such as auditoriums or crowded spaces.

The device is compatible with various accessories and components, allowing for customized setups tailored to specific needs. With options for headsets and neck loops, users can select the best configuration that suits their preferences. The flexibility of the PPA R7-4NA enhances its usability across different scenarios.

In summary, the Williams Sound PPA R7-4NA is a cutting-edge solution for assistive listening, combining advanced technology, user-centered design, and exceptional audio quality. It serves to empower users, ensuring that everyone can enjoy clear sound in various environments, ultimately enhancing communication and engagement in numerous settings.