CountyComm GP-7/SSB User manual
COUNTYCOMM
GOVERNMENT PRODUCTS GROUP
GP-7/SSB
CAGE: 5VKB6
FM STEREO / LW / MW / SW-SSB RECEIVER
Operation Manual
www.countycomm.com
CONTENTS
GETTING STARTED
GP-7/SSB at a glance ........................................................................... 1
Powering your device ............................................................................ 6
Charging the battery .............................................................................. 6
Setting the clock .................................................................................... 7
Setting the FM frequency range ............................................................ 7
Setting the MW (AM) frequency range and tuning step ......................... 7
Enabling/Disabling longwave (LW) ....................................................... 7
USING THE DEVICE
Turning the device on/off ....................................................................... 8
Volume control ...................................................................................... 8
VF (View Frequency) and VM (View Memory) ...................................... 8
Using the radio's antennas .................................................................... 8
Tuning into stations ............................................................................... 9
Manual tuning .................................................................................... 9
Auto scan .......................................................................................... 9
Direct keypad entry ........................................................................... 9
SW / SSB meter band selection ...................................................... 10
Working with station memories ............................................................ 10
Storing stations manually ................................................................ 10
Auto Tuning Storage (ATS) .............................................................. 11
Storing stations during auto scan .................................................... 12
Listening to stored stations .................................................................. 12
Recalling stored stations ................................................................. 12
Memory scan ................................................................................... 12
Deleting stored stations ........................................................................ 13
Deleting a single station .................................................................. 13
Deleting stations during memory scan ............................................ 13
Deleting all stored stations .............................................................. 14
MISCELLANEOUS
Synchronous detection: An introduction ............................................... 23
Troubleshooting .................................................................................... 26
Lithium battery safety instructions ........................................................ 27
Radio maintenance .............................................................................. 27
GP-7/SSB specifications ..................................................................... 28
Enhanced Tuning Mode (ETM+): An introduction ............................... 14
Using ETM+ to scan and store stations .............................................. 17
Listening to stations in the ETM+ memory .......................................... 17
Deleting a single ETM+ station ........................................................... 17
Auto sorting memory ........................................................................... 18
Single sideband (SSB) ........................................................................ 18
Synchronous detection (SYNC) .......................................................... 18
AM bandwidth selection ....................................................................... 19
FM stereo/mono selection ................................................................... 19
FM de-emphasis time constant ........................................................... 19
Display mode ....................................................................................... 20
Add seconds to the clock .................................................................... 20
Display backlight ................................................................................. 20
Setting the sleep timer ......................................................................... 20
Activating/Deactivating the alarm ........................................................ 20
Setting the alarm time ......................................................................... 21
Setting the alarm station ...................................................................... 21
Snooze function ................................................................................... 22
Keylock ................................................................................................ 22
Temperature unit display (Celsius or Fahrenheit) ................................ 22
OTHER SETTINGS AND FEATURES
1
GP-7/SSB - Location of Controls
DISPLAY/ : Display mode / Keylock
TIME: Set / Display clock
ALARM: Alarm setting
POWER: Power switch / Sleep timer
[ 0 ] - [ 9 ]: Numeric keys
[ 1 ] / [ FM SET ]: FM range setting
[ 2 ] / [ LW SET ]: Enable/Disable LW
[ 3 ] / [ 9/10kHz ]: MW step setting
[ 4 ]: FM de-emphasis switch
[ 8 ]: Display seconds on clock
[ 0 ] / : Organize memory
[ M ]: Store stations
[ /DEL. ]: Confirm/Delete
2
GP-7/SSB - Location of Controls
LSB: Lower sideband
USB: Upper sideband
SYNC: Synchronous detection
SSB: Enable/Disable SSB mode
Band selection / ATS
[ MW/LW ]: MW/LW
[ FM/ST. ]: FM/Stereo switch
[ < ], [ > ]: SW meter band selection
SSB sideband selection
[ STEP / ]: Tuning step selection / Display backlight
[ AM BW ]: AM bandwidth selection
[ VF/VM ]: View Frequency View Memory
ETM: Enhanced Tuning Mode
3
GP-7/SSB - Location of Controls
External MW/LW
ferrite bar antenna
: Stereo headphone jack
LW/MW ANTENNA:
Socket for external MW/LW
ferrite bar antenna
FM/SW telescopic whip antenna
Belt clip
TUNING: Multifunctional knob
VOLUME: Multifunctional knob
DC-IN 5V: DC input/charging
Battery compartment
dB : Signal strength unit
dB: Signal-to-noise ratio unit
S/N: Signal-to-noise ratio
AL: Alarm time
mb: SW/SSB meter band
PRESET: Memory location
Temp.: Temperature
Charge: Charging indicator
μ
Display indication examples:
ETM time-specific memory: (LW/MW)
(SW)
Signal strength/Signal to noise ratio:
SW/SSB meter band:
Memory storage location:
Auto sorting memory:
Clock time:
Alarm time:
Already passed charging time:
Temperature: (Celsius)
(Fahrenheit)
4
PL-368 at a Glance – Display
GP-7/SSB - Display Set
Frequency band, Sideband indicator
FM
MW: Medium Wave (AM) SW: Shortwave
LSB: Lower sideband USB: Upper sideband
: FM LW: Longwave
When displayed: FM stereo
When not displayed: FM mono
Battery indicator:
: Full capacity
: Low battery
: : Sleep timer activated
: Alarm activated
: Synchronous detection enabled
Displays time/frequency
: Keylock
: Tuning step indicator
: Enhanced Tuning Mode
: SW / MW / LW unit display
: FM unit display
5
GP-7/SSB - Display indication
6
Powering Your Device
This device is powered by a BL-5C 3.7V rechargeable lithium (Li-ion)
battery. Open the battery compartment and install the battery following the
correct polarity. The device can also be powered by connecting a
DC 5V/0.5A power adapter to the micro-USB type-B socket.
Note: Connecting an external power supply causes interference when
listening to radio frequencies. If experiencing reception difficulties,
disconnect the external power supply and use a battery instead.
Attention! If you use a power adapter, assure that is appropriately certified
and meets the standard requirements for an adapter in your region.
Charging the Battery
When the battery icon is displayed as “ ”, this indicates that battery
power is about to run out. Please charge it in time. To charge the BL-5C
rechargeable lithium (Li-ion) battery, connect a DC 5V/0.5A charger to the
USB socket on the right side of the radio using a micro-USB type-B
charging cable. When charging, the charging time is displayed at the top
right corner of the display while the “Charge” indicator flashes. When
charging is complete, the battery symbol is displayed as “ ” and the
charging indicator "Charge " stops flashing.
Notes:
Assure that the charger is appropriately certified and meets the standard
requirements in your region.
To avoid electrical noise interference, it is recommended not to charge
the battery and listen to radio broadcasts at the same time.
If the device is not used for a prolonged period of time, it is advisable to
charge the battery once every 3 months for about 4 hours. This may
extend battery life.
This manual suits for next models
1
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