CountyComm GP-5 User manual

GP-5/SSB
FM Stereo / MW / SW-SSB DSP RECEIVER
By: CountyComm Inc.
Government Products Group
OPERATION MANUAL
Revised 1-15-2015
www.countycomm.com

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Functional Block Diagram
The GP-5/SSB uses DSP si47XX Microchips (from Silicon Labs, located just blocks from
CountyComm, Inc. in the Silicon Valley, USA) to digitalize analog AM/FM/SSB radio signals
using modern technology mixed with rock solid radio engineering principles. The DSP
improves the radio's sensitivity, selectivity, Signal to Noise ratio and interference rejection.

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TABLE OF CONTENTS
CONTROL LOCATIONS.....................................................4,5
LCD DISPLAY.....................................................................5,6
GETTING STARTED ..........................................................7
TUNING THE RADIO..........................................................8
●ETM (Easy Tuning Mode)
●Manual tuning
●Auto scan stations
SINGLE SIDE BAND (SSB)................................................10
WORKING WITH MEMORIES............................................10
●ATS - Auto Tuning Storage
●Manually storing station
●Semi-auto storing station
DELETE MEMORY..............................................................11
●Manual delete memory
●Semi auto-delete memory
●Delete all memory
SLEEP FUNCTION..............................................................11
SETTING CLOCK................................................................12
SETTING THE ALARM TIME..............................................12
TURN OFF THE ALARM.....................................................12
DISPLAY MODE..................................................................12
KEY LOCK FUNCTION.......................................................13
FM ST. (FM STEREO) BUTTON.........................................13
SYSTEM SETTING.............................................................13
USING THE EXTERNAL ANTENNA...................................14
USING THE INTELLIGENT CHARGING FUNCTION.........15
TIPS FOR USING BATTERIES...........................................16
TROUBLE SHOOTING........................................................16
SPECIFICATIONS...............................................................17

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CONTROL LOCATIONS

5
1Power on/off
2Multifunctional tuning knob
3Band selector and Auto Tuning Storage
4Volume knob
5USB Charging port (Warning: NiMH batteries only)
6Battery compartment
7BFO / Fine tuning step set / FM ST. (Stereo) button
8VF/VM (View Frequency/View Memory) & Scan button
9ETM (Easy Tuning Mode) button
10USB / LSB button / Batteries type selector
11Memory button (Storing radio stations)
12Lock / Display button
13DELETE & 9/10kHz MW step set button
14ALARM On/Off & Setting
15TIME Setting
16FM & SW telescopic antenna (Spares available at www.countycomm.com)
17AM antenna jack
18Earphone jack
19Removable belt clip
LCD DISPLAY
1Battery Level indicator / Charging indicator
2Sleep timer indicator
3Alarm on/off indicator
4Temperature (Temp.)
5Signal indicators
dBµ: signal strength unit
dB : Signal to Noise Ratio (S/N) unit
6Alarm time indicator
7SW meter band indicator

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8Preset memory address
9ETM indicator
10Key-lock indicator
11kHz: frequency unit for MW (AM Broadcast Band) & SW
MHz: frequency unit for FM
12Digital number display (4 Digits)
Display With Radio OFF Shows: local time, alarm time, temperature
Display With Radio ON Shows: local time, signal strength / SNR, alarm time, temperature,
memory address, meter band, SSB fine tuning frequency.
13Digital number display
Display With Radio OFF Shows: Local time
Display With Radio ON Shows: Frequency display, band display
14FM stereo status indicator
15Band indicator
16Rechargeable battery indicator

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GETTING STARTED:
1. Installing batteries:
The battery compartment is located on the back of the GP-5/SSB. To remove the battery
compartment cover, apply thumb pressure and slide it towards the bottom of the radio. Install
three AA fresh alkaline batteries into the battery compartment, observing the battery polarity
diagram on the back of the radio. Display screen should show battery capacity, time, etc.
2. Short press or quickly press the [POWER] button to turn the radio on or off.

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Trouble Shooting: Radio Will Not Power On:
If the radio will not turn on, check that the batteries good, and are installed correctly, or the lock
function had been applied with symbol " " displayed on screen.
TUNING THE RADIO
Once your radio has been powered up, then select your desired band by quickly pressing the
[FM], [MW], SW [ ] or [ ] button. When listening to FM or SW stations, fully
extend the telescopic antenna for a better reception.
You can turn to your favorite station with any of the below tuning methods:
Method 1: ETM (Easy Tuning Mode)
The ETM function allows you to tune into stations easily and temporally store them into the
ETM storage; 100 stations for FM/MW (MW=AM Broadcast Band) & 250 stations for SW.
Note: Scanned stations will not be stored in the regular 450 memories, but will remain in the
ETM temporary storage until next ETM scanning within each band.
HOW TO USE ETM
1. Turn on the radio, and select your desired band by
pressing the FM, MW or SW [ ] or [ ] button.
2. Quickly press the [ETM] button and [ETM] shows on
the display to enter Easy Tuning Mode.
3. Press and hold the [ETM] button until the display
starts scroll automatically scanning the stations within
present band.
4. When the frequency display stops scrolling, turn the
[TUNING] knob to listen to those those scanned stations.
5. Quickly press either the [VF/VM] button with memory page shows in the upper right corner
and the disappearance of ETM on the display to exit ETM mode.
Note: FM stations: When you are in a different city or country, you should perform the ETM
function again. This will not delete any of the stations already within the memory.
MW station: It is recommended to perform the ETM function both during daytime, as well as
night time, because propagation is different. (It is usually better at night.)
SW station: It is also recommended to perform the ETM function in the morning, afternoon as
well as night time, because propagation on short wave bands variable are and there are
usually more stations that can be heard broadcasting in the late afternoon/evening.

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Method 2: MANUAL TUNING
Turn on the radio, quickly press the [VF/VM] button to switch into frequency mode. Rotate the
[TUNING] knob to select your station.
FAST/SLOW tuning is shown in the chart below for each band.
Method 3: AUTO BROWSE- STATION
1. Turn on the radio and quickly press the [VF/VM] button with
the frequency flashing.
2. Long press the [VF/VM] button to scan from one station to
another, staying on each station for about 5 seconds.
3. To stop auto browse function, simply press the [VF/VM]
button.
Note: When the radio is searching & stops at a station, just
press [MEM.] button once to store it in memory.
Method 4: AUTO BROWSE- MEMORY
Note: Read [Working with Memory] before using this function.
1. Turn on the radio, quickly press the [VF/VM] button with
memory page shows in the upper right corner and disappears
in 5 seconds.
2. Long press [VF/VM] button with " PRESET " flashing to
scan from one preset memory to another, staying on each
station memory for about 5 seconds.
3. To stop auto search memory, simply press the [VF/VM]
button.

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SINGLE SIDE BAND (SSB)
1. In any mode, press the [USB/LSB] button to select SSB
reception; press again to select USB/LSB.
2. Turn the [TUNING] knob to search stored SSB stations.
3. Press the [BFO] button, when “U” / “L” flashes on the display,
turn the [TUNING] knob to adjust the reception.
When it is off, press and hold the [BFO] button to set the fine
tuning step. (P.15)
Exit SSB Mode:Press and hold the [USB/LSB] button to exit.
WORKING WITH MEMORIES
There are total 550 preset memories within radio. For FM, MW and SSB, each band has 100
preset memories; and 250 preset memories for SW.
Method 1: ATS - Auto Tuning Storage Turn on the radio and
elect the band that you want to ATS to take place in, either FM or
MW.
Long press the [FM] or [MW] button and notice that the
"PRESET" number (001) appears in the display's upper right
corner with the presets to the right increasing as the band is
scanned and frequencies are stored into memory.
There are two modes for SW ATS function:
Mode A: In SW band, long press the [A / ] button to ATS the
stations within all meter bands.
Mode B: In SW band, long press the [B / ] button to ATS the stations within present meter
band only.
Note:
During ATS process in FM, MW or SW (mode A), pre-stored radio stations will be replaced
automatically by the new searched stations.
With ATS in SW (mode B), those existing memories will not be replaced; all the newly found
radio stations would be stored in the blank memories addresses.
Method 2: MANUALLY STORING STATION
1. Tune to your desired station, press the [MEM.] button once and notice the PRESET number
flashing in the upper right corner of the display.
2. While it flashing, press the [MEM.] button to store it into the memory or wait for 3 seconds to
store it automatically. If you want to store it into another PRESET memory, just rotate the
tuning knob of your choice, and press the [M] button to confirm.

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DELETE MEMORY CHANNELS
Method 1: MANUAL DELETING MEMORY
1. Turn on the radio and press the [VF/VM] button causing PRESET stations appears in the
display's upper right corner.
2. Rotate the [TUNING] knob to select the memory that you want to delete.
3. Long press [DEL.] button with " " flashing in the display, press the [DEL.] button
again to confirm.
Note: If " " is flashing more than 3 seconds without confirmation, it will exit the delete
function automatically.
Method 2: SEMI AUTO-DELETE MEMORY
In VM mode, long press the [VF/VM] button to activate the Auto-Browse function of memory.
Once previewing your
unwanted station, simply press the [DEL.] button with " " shows for 2 seconds and
then keep on browsing other stations. To stop the browsing
function, quickly press the [VF/VM] button to exist.
Method 3: DELETE ALL MEMORY
Quickly press the [VF/VM] button to enter VM / Memory mode,
long press the [DEL.] button for 3 seconds with " "
shows on the upper right corner of the display, press again the
[DEL.] button to remove all memory.
Note: If " " is flashing more than 3 seconds without
confirmation, it will exit the delete function automatically.
SLEEP FUNCTION
1. In POWER OFF mode, press & hold the [POWER] button
until the sleep timer symbol “ ” flashes on the display.
2. Rotate the [TUNING] knob immediately to select a sleep
timer from 1 - 120 minutes, or select “ ” for POWER ON
mode (NO sleep timer).
Note: The default setting of the sleep timer is “ ”.

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SETTING THE CLOCK
1. Long press the [TIME] button until you see the hour flashing. Rotate the [TUNING] knob to
set the correct hour, then quickly press the [TIME] button and notice the minutes are flashing.
2. While it's flashing turn the [TUNING] knob to set the correct minutes, then press [TIME].
SETTING THE ALARM TIME
1. Long press the [ALARM] button until both the HOUR & AL flashing, rotate the [TUNING]
knob to adjust the hour, then quickly press [ALARM] with the minutes flashing.
2. Rotate the [TUNING] knob to adjust the minutes and quickly press the [ALARM] button with
the " " symbol flashing.
3. Rotate the [TUNING] knob to select 1 ~ 90 minutes to set the Auto Alarm Off Timer.
4. Quickly press the [ALARM] button to confirm and notice " " shows on display to activate
the alarm by radio.
5. To turn off the alarm function, repeat quickly pressing the [ALARM] button and notice "
" disappear.
Setting the alarm to wake with the radio on
1. Turn on the radio, tune into your favorite alarm radio station. Please set the volume at the
noticeable level.
2. quickly press [MEM.] button and notice the PRESET number flashing in the upper right
corner of the display.
2. While it flashing, press the [ALARM] button and notice " " symbol is flashing for couple
seconds. Now this alarm radio station is set.
TURNING OFF THE ALARM
When the radio is turned on by the alarm function with radio, you can quickly press [POWER]
button to continue listening radio afterwards.
Quickly press [POWER] again to turn off the radio.
DISPLAY MODE
With radio OFF: Quickly press the [DISPLAY] button to view Temperature and Alarm time.
With radio ON: Quickly press the [DISPLAY] button to view Alarm time, Temperature, Local
time, signal strength/ SNR.

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KEY LOCK FUNCTION
Long press the [ ] button with " " symbol appears in the display to lock up all keys /
buttons. Long press it again with the symbol disappears to unlock the keys/buttons.
FM ST. (FM STEREO) BUTTON
While listening to FM station via stereo earphones, quickly press the [FM.ST] button with "
" appears over the left side of the frequency in the display to activate the STEREO
mode once it receives the FM stereo station.
SYSTEM SETTING
Setting the frequency range for the FM band
Turn off the radio, long press [FM] button, until 87.5-108MHz, 76-108MHz, or 87-108MHz
appears in the display. Quickly keep pressing on the [FM] button to select suitable frequency
range for your local FM.
MW (AM Broadcast) step setting
Turn off the radio, long press [9/10kHz] button until "9kHz" or "10kHz" appears in the display.
By long pressing again, the alternative band step would be shown. The temperature is also
shown on screen at the same time.
In general practice, the frequency step of 10kHz is to be used for broadcasting MW (AM) as
well as the temperature in the degree of Fahrenheit ( ) to be used in the North America.
In order to provide convenience to the end users, the "10kHz" of frequency step is default to be
displayed with temperature in the degree of Fahrenheit ( ) together as well as "9kHz" to be
displayed with temperature in the degree of Centigrade ( ) together.
If the display shows "10kHz" with degree of Fahrenheit ( ),
which means this radio is set to 10 kHz step for MW(AM) with temperature in Fahrenheit ( )
which is for the North America region.
Turn On/Off LW
Turn off the radio, long press the [9/10kHz] button to set the AM tuning step to 9K, then long
press the [MW] button and notice “MW 150 ~ 1620” shows to activate the LW.
Turn ON/OFF charging function & exchange battery
consumption display Press & hold the [ ] key with
" " & " " shows up to activate the consumption display of rechargeable
batteries and the built-in charging system. Press & hold the [ ] key with " "

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shows up &" " disappear to activate the consumption display of alkaline batteries and
turn off the built-in charging function.
Note: This radio default is to use alkaline batteries for power supply. If using rechargeable
batteries, you should switch the radio in “Rechargeable Battery” mode in order to show the
correct power capacity.
Set the fine tuning step
Turn off the radio, press and hold the [BFO] button to show the current fine tuning step, turn
the [TUNING] knob to adjust.
- " " indicates that the fine tuning step of SSB is 50Hz.
- " " indicates that the fine tuning step of SSB is 20Hz.
- " " indicates that the fine tuning step of SSB is 10Hz.
USING THE EXTERNAL ANTENNA
Enhancing FM/SW reception
Attach the clip on type “external FM/SW antenna” to the Telescopic antenna of GP-5/SSB,
then extend the wire and hang on another end to the window or wall to enhance the
FM/SW reception.
Caution: Don't install external FM/SW antenna in the area of frequent lightning storms.

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Enhancing AM/LW reception
Plug in the AM/LW external antenna into the AM Antenna jack, then rotate the antenna for best
AM/LW reception of your selected frequency.
USING THE INTELLIGENT CHARGING FUNCTION
Caution: Don't charge Alkaline batteries in the radio. This can cause a hazard, and damage
your radio.
To Charge NiMH Batteries: With radio off, install 3 x UM3 (AA) rechargeable batteries and
then press & hold the [ ] key with " " & " " displays to activate the
built in charging function.
1. Use any 5V external adaptor with USB plug to connect this radio, the symbol " " will
advance from the bottom to top during power charging. It stops when batteries are fully
charged.
2. You can also use any USB cable to connect the radio with your PC for charging.
Notes for charging power:
All three 3 batteries should always be used as a group to power this radio. Don’t mix batteries:
new and old, from different manufacturers and different chemistrys.

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IMPORTANT MATTERS FOR USING BATTERIES
1. If your radio is stored for a long time without batteries the clock may need to be reset, but
your pre-stored memory channels will continue to be stored.
2. When the battery power is low, the " " symbol in the display will flash to alert you to
change batteries.
3. Never mix old and new batteries. This can damage your radio.
4. When storing your radio for a long period of time, remove the batteries to prevent damage
caused by leaking batteries.
TROUBLE SHOOTING
Problem
ANSWERS
SOLUTIONS
Radio will not turn on.
-Dead Battery
-Batteries not installed
properly.
-Power button is
locked.
-Replace with new batteries.
-Check polarity and re-install
the batteries.
-Press [ ] button to
unlocked.
Radio shuts off when you
are listening.
-Dead Batteries
-Sleep timer is
activated.
-Replace the batteries.
-Turn on the radio again.
Can not store some
stations using ATS
Some station store with
noise using ATS.
-Stations are too
weak.
-There is nearby
interference in your
area.
-Search the station manually.
- Move to another location
and try again.
Only limited FM stations
can be received in Japan.
-FM frequency is
76~90MHz for
Japan.
-Turn the radio off and long
press the [FM SET]
button, quickly press [FM
SET] button again to select
76~108MHz.
Poor AM Broadcast
Reception in USA.
-USA uses 10kHz
step for AM.
-Turn off the radio press the
[9/10kHz] button to select
10kHz.
When the alarm activates
(alarm by radio), there is
only noise with the
broadcast.
-You did not set the
proper radio station
for the alarm.
-Or
The radio station is off
the air
-Preset your alarm station
properly (see the above
setting).
-Make sure it has radio
broadcast in your location.
-Or set the alarm by buzzer.

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SPECIFICATIONS
1. Frequency range
FM 87~108 MHz
Japan 76~108 MHz
Eu, USA 87.5~108MHz
MW 522~1620 (150~1620) kHz
USA 520~1710 kHz
SW 1711~29999 kHz
2. Sensitivity
FM (S/N=30dB) Less than 3µV
MW (S/N=26dB) Less than 1mV/m
LW (S/N=26dB) Less than 10mV/m
SW (S/N=26dB) Less than 30µV
SSB (S/N=10dB) Less than 3µV
3.Selectivity
FM 60 dB
MW 60 dB
LW 60 dB
SW 60 dB
4. FM Stereo crosstalk Less than 25 dB
5. Memory 550
6. Output 350 mW
7. Power UM3 or AA X 3
USB 5V DC
8. Speaker Φ40mm, 500mW/16 Ohm
9. Earphone Jack Φ3.5mm, 8~32 Ohm, Stereo type
10. Dimensions Approx. 53(W) X 159(H) X 26(D) mm
11. Weight 128g (Batteries not included)