Williams Sound PPA R7-4NA Stereo Receiver User Manual


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Specificaitons:
Personal PA
™
Wideband Receiver, Model PPA R7-4NA
©2005, Williams Sound Corp. MCAT 0
37A
Williams Sound
®
Helping People Hear
1
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
75.7 MHz. 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.
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 T
ype:
9 V
olt, Eveready 216 Carbon,
Eveready 522 Alkaline, or
BA
T 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
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
EAR/CHG
V
olume
1
On/Off
Volume
Control
Earphone
Jack
™On∫ Indicator LED
Channel
1
2
3
4
Channel Switch
Williams Sound
R7-4NA Top
R7-4NA Front
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