Williams Sound PFM 350 RCH User Manual
Hearing helper, Personal fm system, Model pfm 350 rch
Hearing Helper
™
Personal FM System •
Model PFM 350 RCH
Hearing Helper
™
Personal FM System •
Model PFM 350 RCH
ADA
ADA
©2006, Williams Sound Corp. MCAT 041B
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
Description:
Maximize a student’s ability to listen with the Personal FM System 350 RCH from Williams Sound.
Personal FM systems deliver the teacher’s message directly to the student’s headphones by way of
FM signal, eliminating background noise and other distractions. It’s perfect for classrooms, job
training, consultation and more. Portable, no wire, no hassle. Each PFM 350 RCH system has a
range of up to 150 feet, and will operate up to 60 hours at one time. Versatile 3.5 mm jack allow
for a variety of earphone and headphone options, or equip it with a neckloop and it is compatible
with most telecoil-equipped hearing aids. The PFM 350 RCH includes an R31 receiver, which fea-
tures a sensitive environmental microphone: this gives the listener more flexibility on what they
want to hear. By turning on the environmental mic, they can listen to a nearby classmate speak
more clearly. Each PFM 350 RCH system includes a CHG 200A drop-in style charger for charging up
to (4) AA BAT 026 batteries (included).
Applications:
Classrooms • Job Consultation • Job Training • Tours • Group Meetings
Dimensions:
3-5/8" L x 2-3/8" W x 7/8" H (92.1 mm x 60.3 mm x 22.2 mm)
Weight:
4.4 oz (125 g) with battery
Color:
Royal blue, shatter-resistant polypropylene
Battery Type:
Two (2) AA 1.5 V non-rechargeable Alkaline batteries (BAT 001),
70 mA nominal current drain, 30 hours approx. life
(OR) Two (2) AA 1.5 V NiMH rechargeable batteries (BAT 026), 70
mA nominal current drain, 20 hours per charge approx., recharges
in 14–16 hours, uses CHG 200 or CHG 1600 Charger
Operating Freq’s:
Selectable, 16 channels, 72.1 – 75.9 MHz*, internal rotary switch
Stability:
± .005%, frequency synthesized, crystal reference, PLL
Modulation:
Wide-band FM, 75 kHz pk, 75 µS pre-emphasis
RF Output:
8000 µV/m at 30 m, max., 40 mW typical
Freq Response:
200 to 10 kHz, + 3 dB at 1% max. THD
Signal-to-Noise Ratio:
55 - 60 dB, with R31 or R32 Receiver
Microphone Gain Control:
45 dB maximum, 18 dB minimum
Transmit Antenna:
Integral with 39" microphone cord
Microphone:
Electret type, 39" cord, 3.5 mm mono phone plug
Controls:
On/Off switch, slide-type; Microphone Mute Switch, slide-type;
Compression Selector 1:1 or 2:1 with internal selectable jumper
Mic Connector:
3.5 mm mono phone jack
Compatible Receivers:
PPA R35, PFM R31, PFM R32
Approvals:
FCC, Industry Canada, RoHS, WEEE
Warranty:
5 years, parts and labor (90 days on accessories)
Note:
FCC regulations, section 15.21, requires the user to comply with
the rules of transmitter operation. Any changes or modifica-
tions made by the user not expressly approved for compliance
may result in the loss of all privileges and authority to operate
the equipment.
PFM T32 FM Transmitter:
T32 Top
T32 Front
*DISCLAIMER: FCC RULES LIMIT USE OF THIS EQUIPMENT TO AUDITORY ASSISTANCE
FOR THE HANDICAPPED.