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Personal PA
™
Wideband Receiver, Model PPA R7-4NA
©2005, Williams Sound Corp. MCAT 0
37A
Williams Sound
®
Helping People Hear
2
The receiver shall be housed in an impact resistant poly-propylene case with a hinged battery door that does not
separate from the receiver. The receiver shall be a body-pack style with a wrist lanyard.
The receiver shall have a 3.5 mm mono earphone jack and accommodate low impedance mono earphones, head-
phones and neckloop telecoil couplers. The 3.5 mm jack shall also serve as a charging jack for rechargeable batter-
ies.
The receiver shall operate on one 9 volt battery and shall have a power LED next to the earphone jack. The receiver
shall have a combination on/off rotary volume control and a four position switch to select between frequencies 72.1,
72.5, 72.9, or 75.7 MHz. These frequencies shall be pre-tuned and are adjustable by means of internal tuning coils.
The receiver shall receive FM signals in the 72-76MHz audio assistance band with 75 µs de-emphasis. The receiver
shall provide a maximum output of 250mW at 16 Ohms with an earbud-type earphone. The system electrical fre-
quency response shall be 100Hz to 10kHz,
± 3dB and the signal-to-noise ratio shall be 50dB at 10µV. The receiver
shall accept wideband deviation of 75 kHz p-p.
The receiver shall be covered by a five-year parts and labor warranty, excluding earphones, headphones, bat-
teries and chargers.
The receiver shall be the Williams Sound Corp. model PPA R7-4NA.
Bid Specs:
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!