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CK333 - MP3 Hi-Fi Stereo FM Transmitter (Kit)
Price: $45.90
Transmit MP3s or Internet radio stations right from your computer to
anywhere in the house with this stereo FM transmitter. Now you don't have
to sit by your computer to enjoy listening to MP3 files on your computer and
can simply broadcast the sound and receive it on any FM radio throughout
your home, office or backyard. This also allows your to listen to your music
on you high power home stereo system without any kind of wiring between
your computer and the stereo system. Ideal when you are playing games on
the computer and you would like to hear the sound on the large speakers
connected to your home stereo system.
The circuit can also be connected to any other type of audio source with a
headphone or line output such as for example portable MP3 Players, CD
Players, or Walkman. Another great application is to connect the circuit to
your portable MP3 Player and listen to the music while in the car using your
car's FM radio. A car cigarette lighter adapter (CBL-12VCAR) is separately
available specially for this application so that no batteries are required.
The transmitter includes everything you need, including the stereo cable
with plug and two stereo audio jacks for connection to your computer and to
your existing speakers at the same time so that you can continue to listen
to the computer sound on your speakers while transmitting. The circuit can
be powered with any standard 9V DC adapter (we recommend using our 9V
DC adapter DCA-9200) or using a car cigarette lighter adapter as mentioned
above. A DC jack is incorporated right on the board for easy connection.
The circuit itself is designed around the popular BA1404 integrated circuit by
Rohm and is tunable anywhere on the FM band between 88 to 95MHz. It
incorporates a specially designed power supply which allows it to be
connected to any standard 9V DC adapter without introducing the
noticeable "hum" which is usually present when operating a low power
transmitter through a wall adapter. The power supply uses two-stage
filtering in conjunction with two RF chokes and bypass capacitors for best
ripple rejection for a "hum" free operation.
We recommend you use our plastic case BX-1598G to install the circuit. The
case is a slick gray plastic box which matches the color of most computers.
Note: The CK333 is identical (in functionality and range) to our CK222 with
the main difference being that the CK333 includes a built-in power supply so
that it can supplied by a 9V DC adapter instead of batteries. In addition, the
CK333 has a 3.5mm stereo input jack while the CK222 has double RCA jacks
for audio input. Supply voltage: 9V DC
adapter or 12V DC
Frequency adjustable: 88 to
98MHz
Power consumption: < 20mA
Transmission range: approx.
150m (unobstructed)
Input sensitivity: adjustable
from 50mV
Channel separation: > 30dB
Includes stereo plug cable
Includes stereo input jacks
PC board dimensions: 5.34" x
2.42"
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