Radio Shack 32-1221B User Manual

OWNER’S MANUAL — Please read before using this equipment.
©
2000 RadioShack Corporation. All Rights Reserved.
RadioShack and RadioShack.com are trademarks
used by RadioShack Corporation.
Wireless Microphone System
Your RadioShack Wireless Microphone Sys-
tem consists of a clip-on electret condenser
microphone, an FM transmitter, and a sensi-
tive dual-conversion receiver. The wireless
microphone system lets you move freely
while it sends the microphone signals to the
receiver up to 200 feet away. You can even
use the wireless microphone system with
your video camera. Other features include:
Wide Frequency Range
— assures accu-
rate sound reproduction.
Ceramic Filters
— provide optimum sensi-
tivity and selectivity, and minimize interfer-
ence from other sources.
Two Operation Channels
— limit interfer-
ence and allow use of two microphone sys-
tems at the same time.
Large Mute Switch
— momentarily turns off
the microphone.
Automatic Squelch Circuit
— limits back-
ground noise when you are not talking into
the microphone.
Microphone Clip
— provides hands-free op-
eration.
WARNING:
To reduce the risk of fire or
shock hazard, do not expose this product to rain
or moisture.
CAUTION
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION:
TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.
This symbol is intended to alert
you to the presence of uninsu-
lated dangerous voltage within
the product’s enclosure that might
be of sufficient magnitude to con-
stitute a risk of electric shock. Do
not open the product’s case.
This symbol is intended to inform
you that important operating and
maintenance instructions are
included in the literature accom-
panying this product.
!
!
32-1221B.fm Page 1 Friday, October 13, 2000 8:35 AM

Radio Shack 32-1221B Specifications

Transmitter Specifications

directivity	Omnidirectional
sensitivity	88 dB SPL at 1.25 kHz FM
frequency response	70-10, 000 Hz
field strength	Max. 10, 000 µV/m at 10 ft
operating range	200 feet
power source	3.0 VDC, Two AA Batteries
current consumption	Less than 60 mA
battery life	Approximately 50 hours with alkaline batteries

Receiver Specifications

intermediate frequencies	1st: 10.7 MHz, 2nd: 455 kHz
sensitivity with S/N 20 dB	2.5 µV
S/N ratio at 1 mV input	50 dB at DC
output line	510 mV max.
output microphone	10 mV max.
power requirements AC	120 V 60Hz
power requirements DC	12.6V

General Specifications

frequency	49.830 MHz or 49.890 MHz ± 0.01%
transmitter dimensions	3[5]/8 x 2[3]/8 x 1[1]/8 in (92 x 61 x 28 mm)
transmitter weight	2.9 oz (without batteries)
receiver dimensions	8[11]/16 x 5[5]/16 x 2 in (170 x 135 x 50 mm)
receiver weight	2 lbs (0.9 kg)