Hearing Helper
™
Personal FM System •
Model PFM 300
Hearing Helper
™
Personal FM System •
Model PFM 300
ADA
ADA
©2006, Williams Sound Corp. MCAT 003B
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
Description:
Maximize a student’s ability to listen with the Personal FM System 300 from Williams Sound. Personal FM
systems eliminate background noise and other distractions, and ensure that the speaker’s message is
heard by everyone in the room. It’s perfect for classrooms, job training, consultation and more. Portable,
no wire, no hassle. Each PFM 300 system has a range of up to 150 feet, and will operate up to 60 hours
at one time. Versatile 3.5 mm jacks 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.
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 modifications made by the user
not expressly approved for compliance may result in the loss of all privi-
leges 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.
