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Unbalanced audio is a signal with a ground reference, usually a center wire with a outer ground, like a RCA jack,
or coax cable. The center is the signal (hot) while the outer is the (ground) reference and shield.
Here is the 222
wire diagram
showing the input
in the unbalanced
method.
This could be a
1/8 jack plugged
into a computer
sound card for
example.
When using the
control cable
Ferrite if the hole
is to big try to
loop the cable
through twice.
The ferrite installs
on the audio
cable just outside
the transmitter
box.
#555-8466 http://www.mcmelectronics.com/
Part of the BLOX series, this compact adaptor com-
bines the L/R line level audio signal from standard
consumer audio equipment, and converts it to an
XLR balanced mic level output. Additionally, a
variable attenuator allows control of the output vol-
ume level.
· Rugged extruded housing
· Dual RCA male input connections
· XLR male output
· Input impedance: 8Kohm
· Output impedance: 580ohm
· Max input level: +24dBm (3.3V)
Nominal attenuation: 24dB
The above can be a useful item, stereo in, then the
item mixes your stereo to mono and sends it to an
XLR out. Be sure to have an XLR jack handy so
you can wire this to the 222
The Inovonics audio processor is a special audio processor made especially for a AM transmitter. It has special
circuitry that enables it to drive the transmitter over 100% modulation without distortion, resulting in more range
and louder sound. This is called asymmetrical modulation, because this processor allows the audio to be non-
symmetrical
Am type audio processor and better ground are the two legal ways to increases the radio range.
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