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Personal PA
™
FM Listening System
• Model PPA 375
Personal PA
™
FM Listening System
• Model PPA 375
©2008, Williams Sound Corp. CAT
100H 4
Bid Specs:
The PPA T35 transmitter shall be microprocessor controlled with push button configuration. It shall have an
operating range of up to 1000 feet. It shall have 10 wideband and 7 non-standard wideband channels operat-
ing on 72.1–75.9 MHz. It shall have 77 narrowband channels operating on 72.025–75.975 MHz.
Front Panel:
The PPA T35 shall have a push button controlled LCD digital display. There shall be three pre-configured (selec-
table) application presets: Hearing Assist, Music and Voice. Configurations for Bandwidth, Frequency, Audio
Input Source (Microphone, Line, Simplex), High Pass Filter, Low Pass Filter, Compressor Slope, Compressor Gain
and RF Output Power shall be push button controlled. The audio level shall be adjustable by push button con-
trol. There shall be a 10 LED array showing +9 to -18 at 3dB intervals. The PPA T35 shall have a 1/4" phone jack
with push button volume control. It shall have push button control for monitoring source audio or transmitted
audio. It shall have an input overload indicator. It shall have an “on” indicator and power button.
Rear Panel:
The PPA T35 shall be powered by 24 VAC power supply via a 3-pin Molex
®
connector. It shall have a 75 ohm
F-connector antenna. It shall have an ANT 025 whip antenna on the top panel directly connected to the circuit
board. The transmitter shall have an RCA line output jack. It shall have a combination 1/4" phone/XLR audio
input jack. It shall have an RF “Off” timer that turns off RF signal after 1 hour of no audio activity.
The PPA T35 shall have FCC, RoHS, and WEEE approval and be powered by UL and CSA power supply. It shall
have a 5-year parts and labor warranty. It shall be compatible with Williams Sound FM equipment operating on
72-76 MHz. The transmitter shall be a Williams Sound Corp. model number PPA T35.
PPA R35 Receiver:
The R35 receiver shall be encased in a black, PC/ABS impact-resistant plastic with a hinged door for bat-
tery installation. The receiver shall be a body-pack type and include a detachable belt-clip for hands-free
operation. The receiver shall have a 3.5 mm mono phone jack and accommodate low-impedance mono
earphones, headphones, neckloops, and telecoil couplers. The receiver shall have a combination volume
control and power on/off rotator dial, and a green LED power “on” indicator. The LED power “on” indi-
cator shall illuminate red to indicate low battery power. There shall be a screwdriver adjustable tuning
pot accessible through the battery door. There shall be a slide selection switch located through the bat-
tery door for choosing Alkaline or NiMH battery operation. There shall be drop-in charger contacts on
the bottom of the receiver unit. The receiver shall be pre-tuned to one of 17 available channels from 72-
76 MHz and field adjustable by internal tuning coil. The receiver shall operate up to approx. 100 hours
when using 1.5 V AA Alkaline batteries, and shall operate up to approx. 50 hours when using 1.5 V NiMH
rechargeable AA batteries.
The receiver shall receive FM signals in the 72-76 MHz audio assistance band with 75 µS de-emphasis. The
receiver shall provide a maximum output of 35 mW at 16 Ohms with an earbud-type earphone. The sys-
tem’s electrical frequency response shall be 100 Hz to 15 kHz, ± 3 dB and the signal-to-noise ratio shall
be 65 dB at 10 µV. The receiver shall have a sensitivity of 2µV at 12 dB Sinad.
The receiver shall have FCC, Industry Canada approvals, and be compliant with RoHS and WEEE regula-
tions. The receiver shall be covered by a five years parts and labor warranty, excluding earphones, head-
phones, batteries and chargers. The receiver model shall be the Williams Sound Corp. model PPA R35.
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
*90 days on accessories.