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FRONT PANEL CONTROLS
1. DOUBLE-BARREL™ MICROPHONE INPUTS
The S-9 is the only radio that features TWO 4-pin, lock
ring type, microphone inputs - one on each side of the
radio. The Double-Barrrel™ microphone jacks allow you
to choose the side of the radio you want the micro-
phone on, or install the stock microphone on one side
and your favorite microphone on the other!
Microphone wiring is as follows:
Pin 1 : Ground
Pin 2 : Microphone Audio
Pin 3 : Transmit
Pin 4 : Receive
2.
(OFF)
VOL SQ
(OFF): Turns the radio on and off. Rotate the control
counterclockwise until it clicks.
VOL: Volume. Adjusts the AF gain, or volume of the
receive audio. Turn clockwise to increase and counter-
clockwise to decrease.
SQ: Squelch. Used to eliminate background or “white"
noise when monitoring strong signals. To properly ad-
just the squelch circuit, start rotating the control slowly
clockwise until the received white noise disappears.
3. MIC-G RF-G
MIC-G: Microphone Gain. Increases or decreases the
energy developed in the microphone amplifier circuit.
The gain increases as the control is rotated clockwise.
For optimum setting, press the push-to-talk switch on
the microphone and speak in a constant tone into the
microphone. A good test tone is to say the word “four" in
a long, drawn out tone. While speaking, rotate the mic
gain control clockwise until the meter needle reaches
maximum deflection. Next, rotate the control counter-
clockwise approx. 1/16 inch. The transmitter will now
be putting out its maximum rated power.
RF-G: RF Gain. Adjusts the receiver sensitivity to both
signals and background noise. This affects the distance
at which a signal can be detected. Turning the control
counterclockwise reduces the receiver sensitivity. This
is particularly useful in areas where large volumes of
traffic (signals) are present.
4. PWR AMT
PWR: Variable RF Output Power. The transmitted power
of the Magnum S-9 may be varied from 0 to 40 watts
peak in all modes. Rotate clockwise to increase RF
output power. Rotate counterclockwise to decrease RF
output power.
AMT: All Mode Talk Back. AMT, a Magnum exclusive,
is an independent talk back monitor. The AMT functions
in all modes and allows the operator to monitor the trans-
mitted audio of the Magnum S-9. To increase the vol-
ume of the talk back rotate the control clockwise. To
decrease rotate counterclockwise. To turn off the talk
back rotate the control completely counterclockwise.
5. VOL DEL
TURBO
TM
Digital Echo is a Magnum radio exclusive
feature. The TURBO
TM
Digital Echo is louder, more ad-
justable, and better sounding than any other echo pro-
cessor available.
VOL: Echo Volume. Varies the volume or number of
echo repetitions. To increase the echo volume, rotate
the control clockwise.
DEL: Echo Delay. Varies the amount of delay, or dura-
tion of the echo repetition. Rotate clockwise to increase
the amount of delay and counterclockwise to decrease.
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4
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2nd Microphone Not Included
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