WANTOK
ENTERPRISES LTD 




Contents:
A complete FM Radio Broadcast station capable of operating
within or beyond existing commercial power networks. It's 13.8/28
Volt DC power requirement permits battery operation from solar or
other charging sources to reach that last mile that is so
important in educational broadcasting.

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- Transmitter
- 88-108 MHz in 200 KHz steps. Frequency is easily adjusted with internal
DIP switches. These units also feature phase locked loop circuitry ensuring
high frequency stability from -25 degrees Celsius through +45 degrees
Celsius. Frequency deviation is +/- 75 KHz; distortion >0.2%;
RF Impedance 50 Ohms. Reflected power indicator and deactivation circuits ensure no burnout
of the unit.
-
- Six Channel Audio Mixer
- This compact mixer features a microphone input
sensitivity of 1 mV; Line output sensitivity of 100 mV. The
output level at 1 KOhm load = 1mV. The input overload on
the microphone is >250 mV. The line input is > 6
Volts. Distortion is < 0.5%. The signal to noise ratio
is > 55 dB. Frequency response is 20-20000 Hz +- 2 dB.
The power requirement for operation of the mixer are a
minimum of 9 V DC and a maximum of 13.5 V DC.
-
- Compact Disc/MP3 Players
- The basic unit includes two MP3/CD compact
disc players that have a signal/noise ratio of 80 dB; WRMS<0.25%. The sampling frequency is 44.1 KHz . These
units feature a Digital/Audio 1 bit converter as well as
a semi-conductor laser pickup light source. The pickup
wave length is 790 nm. The laser output of the units is
0.5 mW continuous.
-
- Audio Cassette Recorders/Players
- The SBS-1 includes two dual track monaural track system
recorders. Tape speed is 4.75 cm/s. It features AC Bias
recording system. Frequency response from 125
Hz-6.3 kHz is + or - 6dB. The signal to noise ratio is -40 dB; WRMS<0.35%. They are full play and record capable as
well as having pause and cue.
A tape counter permits easy location of
recorded materials.
-
- Microphones
- The unit contains a dynamic/unidirectional microphone
with an impedance of 500 Ohms. The sensitivity of the
unit at 1 KHz is -77dB(0dB=1V/microbar). The frequency
response is 100 Hz to 10 KHz. It uses an XLR connector
and has a flexible neck for adjustment.
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SBS-1
WANTOK Products and
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Last modified:
December 11, 2007