pg_0006
- 6 -
If the antenna system’s VSWR is too high, the meter
will FLASH red on transmit. This indicates that the
system’s VSWR is too high and potentially damaging
to the radio. See rear panel instructions (#3) on pg 7.
14. BAND
Use to select the following band segments (frequency
groups).
Band
Frequency Range
A
28.065 - 28.505 MHz
B
28.145 - 28.585 MHz
C
28.165 - 28.605 MHz
D
28.085 - 28.525 MHz
E
28.065 - 28.505 MHz
F
28.145 - 28.585 MHz
G
28.165 - 28.605 MHz
H
28.085 - 28.525 MHz
15. PA/FM/AM/USB/LSB
(PA): Public Address Mode. To operate PA, insert a
public address speaker or horn into the PA jack on the
rear panel of the transceiver.
16. 6-DIGIT FREQUENCY COUNTER
17. 2-DIGIT CHANNEL DISPLAY
18. DYNAMIC MICROPHONE
REAR PANEL
1. External Speaker Jack
An external speaker jack is located on the rear panel of
the transceiver. The Magnum S-9 is designed to accept
any standard 8 ohm external speaker for use with two-
way transceivers.
2. Public Address (PA) Horn Jack
A PA horn jack is located on the rear panel of the trans-
ceiver. The Magnum S-9 is designed to accept any stan-
dard PA horn for use with two-way transceivers. To op-
erate in PA mode, please refer to the previous instruc-
tions.
3. SWR LIGHT ON/OFF SWITCH
The S-9 is equipped with an automatic HIGH VSWR
warning circuit. In the event of an abnormally high
VSWR condition the red transmitter light that illumi-
nates the meter will start flashing. It is strongly recom-
mended to correct the problem quickly as transmitting
with a high VSWR will stress and shorten the life of the
RF transistors.
The on/off switch on the rear panel of the radio turns off
the flashing red high VSWR indicator. Please note that
this only turns off the indicator light and does not solve
any problems that may exist with the radio and an-
tenna system.
6. FINE COR
The clarifier shifts both the transmitted and received
frequency in all modes. The primary use is for SSB
operation. The COR (course) tuning shifts a total of +/
- 5 KHz. The FINE tuning shifts a total of +/- 1.5KHz.
The built-in frequency counter will read both course and
fine adjustments.
7. FREQUENCY: Rotate clockwise or counterclockwise to
select the desired frequency.
8. OFF-NB-NB+: Noise Blanker and Automatic Noise Lim-
iter. In the NB position, only the noise blanker is ON. In
the NB+ position, both the noise blanker and automatic
noise limiter are ON. The noise blanker circuit elimi-
nates pulse type interference usually associated with
automotive ignition systems.
The NB+ position also turns off the frequency counter
display.
9. OFF-RB: Roger Beep. The RB position activates the
end of transmission, or roger beep, tone. When acti-
vated a 1kHz tone will automatically transmit upon the
release of PTT switch. This notifies contacts that your
transmission has ended and you are ready to receive
their signal.
10. TOP GUN™ MODULATOR ON-OFF: The TOP GUN
TM
Modulator feature makes AM mode communications
more effecient and effective. When turned on, the modu-
lator circuit allows the AM carrier to be turned down to
1 to 1.5 watts, while still maintaining the peak output
power of 45 watts of modulation (45 watts of swing). To
turn the TOP GUN
TM
Modulator feature on, turn the
switch to ON. Next, use the PWR control to set the
level of AM carrier you want. Even when the PWR con-
trol is set to 1 to 1.5 watts, the radio (with the Modulator
circuit turned on) will provide the maximum peak output
power of 45 watts.
11. DIMMER LO-MED-HI: The 3 stage dimmer control al-
lows you to select the proper illumination level for both
the S/RF meter and blue LED displays.
12. +10kHz-OFF: In the +10kHz position, the frequency
is shifted up 10 kHz.
13. S/RF/SWR Warning Meter: The meter indicates rela-
tive receive signal strength, RF output power, and high
SWR (standing wave ratio). The meter features blue back-
lighting on receive and red backlighting on transmit.
The meter features 2 scales, the lower scale indicates
relative signal strength (S units) for received transmis-
sions. The top scale indicates the RF output power of
the Magnum S-9.
