Super Star 7Q00DX User manual

7QOODX
OWNER'S MANUAL
3360 Channels All-Mode AM/FM/USB/LSB Built
in Frequency Counter Mobile Transceiver with
Roger Beep
SUPER STAR

TABLE OF CONTENTS
Page
Specifications ........................................................................................................... 2
Installation
Location .............................................................................................................. 4
Mounting the Connection.................................................................................... 4
Ignition Noise Interference .................................................................................. 5
Antenna..................................................................... •....................................... 5
Tuning the Antenna for Optimum SWR............................................................... 6
External Speaker ............................................................................................... 7
Operation
Control Functions......................................... •.................................................... 8
Front Panel ........................................................................................................."8
Rear Panel.......................................................................................................... 10
Press-To-Talk Microphone.................................................................................. 11
Operating Procedure to Receive......................................................................... 11
Operating Procedure to Transmit........................................................................ 11
Receiving SSB signals........................................................................................ 11
Frequency / Channel Chart ............................................................................... 13

Specifications
GENERAL
Frequency range
A - 25.615 to 26.055 MHz
B - 26.065 to 26.505 MHz
C - 26.515 to 26.955 MHz
D - 26.965 to 27.405 MHz
E - 27.415 to 27.855 MHz
F - 27.865 to 28.305 MHz
G - 28.315 to 28.755 MHz
Channels.
Total 3360 : 280X4 MODE
280 ( + 10kHz) X4 MODE
280 (-10kHz) X4 MODE
Frequency Control
Phase Lock Loop (PLL) synthesizer.
Frequency space
10 kHz
Emission
AM/FM/USB/LSB
Microphone
Plug-in dynamic; with push-to-talk switch and coiled
cord.
Input Voltage
13.8V DC nominal, 15.9V max., 11.7V min.
(negative ground).
Transmit: AM full mod., 10A.
SSB 150 watts PEP output, 20A.
Receiver: Squelched, 0.5 A.
Maximum audio output, 1.2A.
Size
62X200X309 mm
Weight
approx, 2.6kg
Antenna Connector
UHF, S0239.
TRANSMITTER
Power Output
HI MID LO
AM 50 25 5
FM 50 25 5
SSB 150 75 15
Modulation
low-level Class B, Amplitude Modulation: AM.
Variable capacitance Frequency Modulation: FM.
Intermodulation Distortion SSB: 3rd order, more than —25 dB.
5th order, more than —35 dB.
SSB Carrier Suppression
50 dB
Unwanted Sideband
50 dB
Frequency Response
AM and FM: 450 to 2500 Hz.
Output Impedance
50 ohms, unbalanced.

RECEIVER
Sensitivity
SSB : 0.3 tiV for 10 dB (S+ N)/N at greater than V>-
watt of audio output.
AM: 1 juV for 10 dB (S + N)/N at greater than V>-
watt of audio output.
FM: 1.0 MVfor 20 dB (S + N)/N at greater than Y>-
watt of audio output.
Selectivity
AM/FM: 6 dB <§3 KHz, 50 dB @ 9 KHz.
SSB: 6 dB @ 2.1 KHz, 60 dB @ 3.3 KHz.
Image Rejection
More than 45 dB.
IF Frequency
10.695 MHz 1st IF, 455 KHz 2nd IF.
Adjacent-Channel Rejection
60 dB
RF Gain Control
30 dB adjustable for optimum signal reception.
Automatic Gain Control
Less than 10 dB change in audio output for inputs
(AGO
from 10 to 10.000 microvolts.
Squelch
Adjustable: threshold less than 0.5 uV.
ANL
Switchable.
Noise Blanker
RF type, effective on AM/FM and SSB
Clarifier Range
Coarse (TX/RX) more than ±10 KHz
Fine (RX) more than ±1 KHz
Audio Output Power
4 watts into 8 ohms.
Frequency Response
300 to 2800 Hz.
Built-in Speaker
8 ohms, round.
External Speaker
8 ohms; disables internal speaker when connected.
(Not Supplied)

Installation
LOCATION
Plan the location of the transceiver and microphone bracket before starting the
installation. Select a location that is convenient for operation and does not interfere with
the driver or passengers in the vehicle. In automobiles, the transceiver is usually
mounted below the dash panel, with the microphone bracket beside.it.
s
MOUNTING THE CONNECTION
The SS—7000 DXis supplied with a universal mounting bracket. When mounting the
bracket and radio to your car, make sure it is mechanically strong. Also provide a good
electrical connection to the chassis of the vehicle. Proceed as follows to mount the
transceiver:
1. After you have determined the most convenient location in your vehicle, hold the
SS—7000 DX with mounting bracket in the exact location desired. If nothing will
interfere with mounting it in the desired position, remove the mounting bolts. Before
drilling the holes, make sure nothing will interfere with the installation of the mounting
bolts.
2. Connect the antenna cable plug to the standard receptacle on the rear panel. Most
CB antennas are terminated with a type PL-259 plug and mate with the receptacle.
3. Connect the red DC power input wire (with the fuse) to + 13.8V DC. This wire
extends from the rear panel. In automobile installation, + 13.8V DC is usually
obtained from the accessory contact on the ignition switch. This prevents the set
being left on accidentally when the driver leaves the car and also permits operating
the unit without the engine running. Locate the accessory contact on most ignition
switches by tracing the power wire from the AM broadcast receiver in the car.
Connect the black DC power input wire to ground earth. This is usually the chassis of
the car.
4. Mount the microphone bracket on the right side of the transceiver or near the
transceiver, using two screws supplied. When mounting in an automobile, place the
bracket under the dash so the microphone is readily accessible.

IGNITION NOISE INTERFERENCE
Use of a mobile receiver at low signal levels is normally limited by the presence of
electrical noise. The primary source of noise in automobile installations is from the
generator and ignition system in the vehicle. Under most operating conditions, when
signal level is adequate, the background noise does not present a serious problem.
Also, when extremely low level signals are being received, the transceiver may be
operated with vehicle engine turned off. The unit requires very little current and therefore
will not significantly discharge the vehicle battery.
Even though the SS —7000 DX has ANL and NB controls, in some installations
ignition interference may be high enough to make good communications impossible.
The electrical noise may come from several sources. Many possibilities exist and
variations between vehicles require different solutions to reduce the noise.
ANTENNA
A vertically polarized, quarter-wavelength whip antenna provides the most reliable
operation and greatest range. Shorter, loaded-type whip antennas are more attractive,
compact and adequate for applications where the maximum possible distance is not
required. Also, the loaded whips do not present the problems of height imposed by a full
quarter-wavelength whip.
Mobile whip antennas utilize the metal body of the vehicle as a ground plane. When
mounted at a corner of the vehicle they are slightly directional, in the direction of the
body of the vehicle. For all practical purpose, however, the radiation pattern is
nondirectional. The slight directional characteristic will be observed only at extreme
distances. A standard antenna connector (type SO 239) is provided on the transceiver
for easy connection to a standard PL 259 cable termination.
If the transceiver is not mounted on a metal surface, it is necessary to run a separate
ground wire from the unit to a good metal electrical ground in the vehicle. When installed
in a boat,, the transceiver will not operate at maximum efficiency without a ground plate,
unless the vessel has a steel hull.
Before installing the transceiver in a boat, consult your dealer for information
regarding an adequate grounding system and prevention of electrolysis between fittings
in the hull and water.

TUNING THE ANTENNA FOR OPTIMUM SWR
Since there is such a wide variety of base and mobile antennas, this section will
strictly concern itself to the various types of mobile adjustable antennas.
Because the antenna length is directly related to the channel frequency, it must be
tuned to resonate optimally all 480 channels of the transceiver. Channel 1 requires a
longer antenna than Channel 480 because it is lower in frequency.
Due to the various methods of adjusting antennas for proper SWR we have chosen
what we think is the optimum method:
A. Antennas with adjustment screws (set screws).
1. Start with the antenna extended and tighten the set screw lightly enough so that the
antenna can Be lightly tapped with your finger for easy adjustment.
2. Set your SS-7000 DX to Channel 21. <s B band or D band or F band. Press the PTT
(push-to-talk) switch, and tap the antenna (making it shorter). The SWR meter will
show a lower reading each time the antenna is tapped. By continuing to shorten the
antenna you will notice the SWR reading will reach a low point and then start rising
again. This means that you have passed the optimum point for Channel 21. Extend
the antenna a short distance and again follow the procedure above.
When the lowest point has been reached, switch to Channel 1 @ A band or C
band or E band and then to Channel 40 <s C band or E band or G band and
compare SWR readings. They sould be almost equal.
B. Antennas which must be cut to proper length.
1. Follow the same procedure as above, but adjust the length by cutting in 1/8"
increments until a good match is obtained.
2. Be very careful not to cut too much at one time, as one it is cut, it can no longer be
lengthed.
3. The whip is easily cut by filing a notch all the way around and breaking the piece off
with pliers.
If you are having difficulties in adjusting your antenna, check the following:
A. All doors must be closed when adjusting the antenna.
B. Make sure the antenna base is grounded.
C. Check your coaxial cable routing (it may be pinched when routed into the car).

D. Try a different location on your car (keeping in mind the radiation pattern you wish).
E. Is the antenna perfectly vertical ?
F. Try a different location in your neighborhood. Stay away from large metal objects
when adjusting (metal telephone or light posts, fences, etc.)
External Speaker
The external speaker jack (EXT. SP) on the rear panel is used for remote receiver
monitoring. The external speaker should have 8 ohms impedance and be able to handle
at least 4 watts. When the external speaker is plugged in, the internal speaker is
disconnected.

Operation
CONTROL FUNCTIONS
There are Thirteen controls and five indicators on the front panel of your SS-7000
DX.
FRONT PANEL
1. OFF/ON/VOLUME (inner dual concentric). Turn clockwise to apply power to the
unit and to set the desired listening level. During normal CB operation, the
VOLUME control is used to adjust the output level obtained either at the
transceiver speaker or the external speaker, if used.
2. SQUELCH (outer dual concentric). This control is used to cut off or eliminate
receiver background noise in the absence of an incoming signal. For maximum
receiver sensifivity it is desired that the control be adjusted only to the point where
the receiver background noise or ambient background noise is eliminated. Turn
fully counterclockwise then slowly clockwise until the receiver noise disappears.
Any signal to be received must now be slightly stronger than the average received
noise. Further clockwise rotation will increase the threshold level which a signal
must overcome in order to be heard. Only strong signals will be heard at a
maximum clockwise setting.
3. MIC GAIN (inner dual concentric). Adjusts the microphone gain in the transmit
and PA modes. This controls the gain to the extent that full talk power is available
several inches away from the microphone.
4. RF GAIN CONTROL (outer dual concentric). Use to reduce the gain of the RF
amplifier under strong signal conditions.
5. CLARIFIER. Allows variation of the receiver operating frequencies above and
below the assigned frequency. Although this control is intended primarily to tune
in SSB signals, it may be used to optimize AM/FM signals as described in the
Operating Procedure paragraphs. Coarse operates both TX/RX but Fine only in
RX.

6. MODE (AM/FM/USB/LSB) SWITCH. This switch is used to select AM, FM, USB
or LSB mode of operation. Unless the station with which communication is desired
is equipped with SSB, the AM or FM mode is normally used. The mode selector
switch changes the mode of operation of both transmitter and receiver
simultaneously. Turn to "Receiving SSB signals" for a further explanation of single
sideband.
7. BAND SELECTOR. This switch selects A, B, C, D, E, F or G band of operation
and PA.
8. CHANNEL SELECTOR. This switch selects any one of the forty Citizens Band
channels desired. The selected channel appears on the LED readout directly left
side the Channel Selector knob.
10. CHANNEL INDICATOR. Numbered LED indicates the selected channel you
wish to operate on.
11. FREQUENCY COUNTER. The frequency counter indicates the selected channel
you wish to operate on.
12. TX INDICATOR. Lights up when transmitting.
13. AWI INDICATOR. The ANTENNA WARNING INDICATOR provided to indicate
someting unusual conditions of the antenna portion such as shorted, opened or
miss mataching, etc. When the ANTENNA WARINING INDICATOR Lighted up,
please cut the power switch OFF and check the antenna portion.
14. S & RF INDICATOR. This indicator indicates received signal strength and
transmitter RF output power.
15. TONE SWITCH. This switch is used to shape the audio response to the
operator's prefence. Bass is increased in the on position (LED Light up) and
treble is increased in the off position.
16. ROGER BEEP SWITCH. When this switch is placed in the ROGER BEEP
position (LED light up), your radio automatically transmits the audio sign at the
end of your transmission. The listener can note easily your transmission is over
through the sign.
17. ANL SWITCH. When this switch is placed in the ANL position (LED Light up),
the automatic noise limiter in the audio is activated. The ANL may be used when
noises generated from such sources as atmospheric discharge, electronic
machinery etc., are present.
HI
MID
LO
AM
50 watts
25 watts
5 watts
FM
50
25 "
5 "
SSB
150
75 "
15 "
6. I'OW KR SELECTOR. This switch selects the desired RF power output.

18. NB SWITCH. This switch activates the noise blanker circuit when placed in NB
position (LED Light up). The noise blanker is very effective for repetitive impulse
noise such as ignition interference.
REAR PANEL
19. ANTENNA. Accepts 50 ohm coaxial cable with a type PL-259 plug to be
connected.
20. EXT SP. Accepts 8 ohm, 4 watt external speaker to be connected. When
external speaker is connected to this jack, the built-in speaker is automatically
disconnected.
21. PA SP. Used to connect a PA speaker (8 ohm 4W) for PA operation. Before
operating PA you must first connect a PA speaker to this jack.
22. POWER. Accepts 13.8V DC power cable with built-in fuse (20 amp.) to be
connected.

PRESS-TO-TALK MICROPHONE
The receiver and transmitter are controlled by the press-to-talk switch on the
microphone. Press the switch and the transmitter is activated, release switch to receive.
When transmitting, hold the microphone two inches from the mouth and speak clearly in
a normal "voice". The radios come complete with low-impedance (600 ohm) dynamic
microphone.
OPERATING PROCEDURE TO RECEIVE
1. Be sure that power source, microphone and antenna are connected to the proper
connectors before going to the next step.
2. Turn unit on by tuning VOLUME control clockwise on SS-7000 DX
3. Set the VOLUME for a comfortable listening level.
4. Set the MODE switch to the desire mode.
5. Listen to the background noise from the speaker. Turn the SQUELCH control slowly
clockwise until the noise JUST disappears (no signal should be present). Leave the
control at this setting. The SQUELCH is now properly adjusted. The receiver will
remain quiet until a signal is actually received. Do not advance the control too far, or
some of the weaker signals will not be heard.
6. Set the CHANNEL selector switch to the desired channel.
7. Set the RF gain control fully clockwise for maximum RF gain.
8. Adjust the CLARIFIER control to clarify the SSB signals or to optimize AM/FM
signals.
OPERATING PROCEDURE TO TRANSMIT
1. Select the desired channel of transmission.
2. Set the MIC GAIN control fully clockwise.
3. If the channel is clear, depress the push-to-talk switch on the microphone and speak
in a normal voice..
RECEIVING SSB SIGNALS
There are four types of signals presently used for communications in the Citizens
Band: AM, FM, USB, and LSB. When the MODE switch on your unit is placed in the AM
position, only standard double-sideband and in FM position, only frequency deviation,
full carrier signals will be detected. An SSB signal may be recognized while in the AM or
FM mode by its characteristic "Donald Duck" sound and the inability of the AM or FM
detector to produce an intelligible output. The USB and LSB modes will detect upper
sideband and lower sideband respectively, and standard AM signals.

SSB reception differs from standard AM reception in that SSB receiver does not
require a carrier or opposite sideband to produce an intelligible signal. A
single-sideband transmitted signal consists only of the upper or the lower sideband and
no carrier is transmitted. The elimination of the carrier from the AM signal helps to
eliminate the biggest cause of whistles and tones heard on channels which make even
moderately strong AM signals unreadable. Also; SSB takes only half of an AM channel,
therefore two SSB conversations will fit into each channel, expanding the 280 AM
channels to 560 SSB channels. The reduction in channel space required also helps in
the receiver because only half of the noise and interference can be received with
100% of the SSB signal.
An SSB signal may be received only when the listening receiver is functioning in the
same mode. In other words, an upper sideband signal (USB) may be made intelligible
only if the receiver is functioning in the USB position.
If a lower sideband (LSB) signal is heard when the receiver is in the USB mode, no
amount of tuning will make the signal intelligible. The reason for this may be
understood if you consider that when modulation is applied tc the transmitter's
microphone in the USB mode, the transmitter's output frequency is increased whereas
in the LSB mode the transmitter's output frequency is decreased. The result in listening
to the receiver is that when the MODE switch is in the proper position (either USB or
LSB), a true reproduction of single tone of modulation will result, and if the tone is
increased in frequency (such as a low-pitched whistle a high-pitched whistle) you will
hear the increase in the output tone of the receiver. If the incorrect mode is selected, an
increase in tone of a whistle applied to the transmitter will cause a decrease in the
resultant tone from the receiver.
Thus when a voice is used in place of a whistle or tone, in the proper listening mode
the voice will be received correctly whereas in the incorrect mode, the voice will be
translated backwards and cannot be made intelligible by the voice lock control. When
listening to an AM transmission, a correct sideband is heard in either mode since both
upper and lower sideband are received.
Once the desired SSB mode has been selected, frequency adjustment may be
necessary in order to make the incoming signal intelligible, the CLARIFIER control
allows the operator to vary frequency above and below the exact-center frequency of
the received signal. If the sound of the incoming signal is high or low pitched, adjust the
operation of the CLARIFIER. Consider it as performing the same function as a
phonograph speed control. When the speed is set to high, voices will be high-pitched
and if set too low, voices will be low-pitched. Also, there is only one correct speed that
will make a particular record produce the same sound that was recorded. If the record
is played on a turntable that rotated in the wrong direction (opposite sideband) no
amount of speed control (CLARIFIER) will produce an intelligible sound.
An AM signal received while listening in one of the SSB modes will produce a
steady tone (carrier) in addition to the intelligence, unless the SSB receiver is tuned to
exactly the same frequency by the CLARIFIER control. For simplicity it is
recommended that the AM modes be used to listen to AM signals.