Tecsun PL-680 User manual

20150116
TECSUN
PL-680
TECSUN ELECTRONIC IND. LTD.
OPERATION MANUAL
PLL SYNTHESIZED RECEIVER
FM STEREO / MW / LW / SW-SSB / AIR BAND
TECSUN ELECTRONIC IND. LTD.
Address: Rm 11, 13/F, Block A, Hoi Luen Ind. Ctr.,
55 Hoi Yuen Road, Kwun Tong, Kowloon, Hong Kong.
E-mail: [email protected]
Website: www.tecsun.com.cn
TECSUN
RADIOS AUSTRALIA
TECSUN
24/9 Powells Road, Brookvale, NSW 2100 Australia Ph: [phone]
Email: [email protected] www.tecsunradios.com.au
TECSUN RADIOS AUSTRALIA

TECSUN RADIOS AUSTRALIA www.tecsunradios.com.au
FEATURES
FM-stereo/MW/LW/SW/SW SSB/AIR band with high sensitivity,
selectivity and user-friendliness
FM band coverage: 76 – 108 MHz
Shortware Single Side Band (SSB) with upper sideband (USB)
and lower sideband (LSB)
Equipped with Synchronous Detector and Dual Conversion
technology for MW band; this greatly enhances the receiver’s
sensitivity, selectivity, image rejection, and interference from
adjacent stations
FM/SW external antenna jack sensitivity selector: DX/Normal/
Local antenna gain
Multiple tuning methods
Store up to 2000 stations (manually, semi-automatic and fully
automatic)
Equipped with a high-sensitivity acoustic speaker with treble/bass
tone control switch (FM-stereo via earphone)
Auto Alarm-Off Timer: when the alarm goes off, the preset radio
station will play for 1-90 minutes
Sleep timer (1-120 minutes) to turn off the radio automatically
User-friendly interface
Built-in charging function
Powered by 4 x AA (R6) size batteries, DC 6V
Luxury carrying case
Dimensions: 188 x 116 x 31 mm
SPECIFICATIONS
8. Station Memory 2000M in total
800 memories for each band:
FM: 100M
MW: 100M
LW: 100M
SW: 200M
SSB: 200M
AIR: 100M
1200 memories for 12 memory pages (each page 100 memories)
11. Speaker: Φ77 mm / 16 Ohm / 1W Cone speaker
12. Earphone Jack: Φ3.5mm, 32 Ohm, Stereo type
13. Power supply:
Battery: UM3 or AA X 4
External adaptor: DC 6V, ≥ 300mA
14. Unit Dimensions: approx. 188(W) X 116(H) X 31(D) mm
9. Alarm Mode: alarm by radio only (2 presettings)
10. Quiescent Current
FM ＜ 50mA
MW/LW ＜ 70mA
SW ＜ 70mA
SSB ＜ 70mA
AIR ＜ 70mA
Standby ＜ 80uA
15. Weight: 475g (Batteries not included)
PL-680 25

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TABLE OF CONTENTS
PL-680 1
CONTROL LOCATIONS...................................................................................... 2
LCD DISPLAY 4
TUNING INTO STATIONS....................................................................................6
WORKING WITH STATION MEMORIES.............................................................8
SLEEP FUNCTION............................................................................................13
TIME SETTING..................................................................................................13
ALARM SETTING..............................................................................................14
SNOOZE FUNCTION........................................................................................15
INTELLIGENT LIGHT FUNCTION.....................................................................15
SETTINGS................................................................................16
FM ST. (FM STEREO).......................................................................................16
AM BW (BANDWIDTH)
ANT. GAIN..........................................................................................................17
TONE CONTROL...............................................................................................17
KEY-LOCK FUNCTION......................................................................................17
INTELLIGENT CHARGING FUNCTION
SINGLE SIDE BAND (SSB)...............................................................................18
SYNCHRONOUS DETECTOR
HOW TO IMPROVE FM / SW RECEPTION......................................................19
SYSTEM SETTINGS
IMPORTANT MATTERS FOR USING BATTERIES...........................................21
TROUBLE SHOOTING......................................................................................22
SPECIFICATIONS..............................................................................................23
.......................................................................................................
HOW TO TURN ON/OFF THE RADIO.................................................................5
Manual Station Tuning
Auto Browse Station
Direct Keypad Entry
Storing Stations Manually
Semi-Automatic
ATS (Auto Tuning Storage)
Memory Tuning Manually
Auto Browse Memory
Direct Key in Memory Address
Delete Single Memory Manually
Semi-Auto Delete Memory
Delete ALL Memories within a Page
LISTENING TO STORED STATIONS................................................................12
SETTING ALARM STATION
SETTING THE ALARM TIME
TUNING STEP
......................................................................................17
............................................................18
..........................................................................19
......................................................................................... 20
RESET PROCEDURE........................................................................................21
Station Storage

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CONTROL LOCATIONS
2 PL-680

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1
5
8
2
9
7
3
10
13
15
16
17
18
19
20
21
25
11
22
23
26
6
24
4
14
27
12
PL-680 3
Note: For the silk-printing in red or orange on radio with brackets,
it means that you can only operate it when radio is off.
Power / Sleep button
Time set button
Timer A Alarm set button
Timer B Alarm set button
FM & SW Telescopic Antenna
Light / Snooze / Step button
VF / VM / SCAN
-/+ PAGE buttons
Air Band button
Single Side Band (SSB) button
Synchronous (SYNC) button
FM. ST & AM BW select button
FM / AM (MW, LW) / SW Band & ATS buttons
Delete / Enter button
Key lock button
Memory / Battery button
Hand Carry Strap
FM / SW Antenna Jack
ANT. Gain (DX / Normal / Local) switch
Treble / Bass Tone Control
Earphone Jack
DC 6V Jack
Metal Stand
Tuning Knob
SSB BFO knob
Volume knob
Reset button

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LCD DISPLAY
MHz
A B
SL EEP
kHz
Timer A
PAGE PRESET
mb
SLOW
Ni-MH
Battery
FM MW LW Shortwave BW
FAST
Timer B
Charge
0 1 2 3 4 5
SYNC
AIR
1 2 3 4 5 6 7
8
9
10
11
1213141516
18
19
17
0 1 2 3 4 5
0 1 2 3 4 5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
4 PL-680
19
Battery Consumption indicator
“ ” : Full
“ ” : Empty
Signal Strength indicator
“ ”: Strong Signal
“ ”: Weak Signal
Digital Number Display:
With radio off: Time & System settings
With radio on: Frequency or Error display
Sleep timer indicator
Alarm Timer A or B – Timer indicator
Charging Indicator
Digital Number Display:
With radio off: preset alarm time and charging time
With radio on: time, page & memory address, SW meter band displays.
SW meter band indicator
PAGE: Memory Page number
PRESET: Memory Address number
Alarm Timer A or B - On/Off indicator
Key-Lock indicator
Synchronous band detection
Single Side Band (SSB) indicator
USB: Upper Side Band
LSB: Lower Side Band
Tuning Speed:
Slow: Slow Tuning
Fast: Fast Tuning
KHz: frequency unit for MW, LW & SW
MHz: frequency unit for FM
AM Band width indicator
: AM Wide band
: AM Narrow band
FM, MW,LW and SW Band indicator
FM Stereo indicator
Air Band indicator
Ni-MH Rechargeable Battery indicator

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1. Open the battery compartment located on the back of the unit;
install 4 x UM3 AA size batteries observing the battery polarity
diagram on the back of the radio. Close the battery door.
Connect the unit to the regulated power supply.
2. Press the [POWER] button to turn on the radio.
Note:
If the radio is unable to power on, please check if the batteries are
installed correctly, battery capacity is sufficient, and the key lock
function is turned off; to deactivate the key lock function press & hold
the [ ] button.
Long press the power button to adjust the sleep timer setting.
PL-680 5
HOW TO TURN ON/OFF THE RADIO
~220V AC CORD
+
Press

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Press the [POWER] button to turn on your radio, then select your
desired band by pressing [FM], [AM], SW [ ] / [ ], or [AIR] button.
In case of receiving FM/AIR/SW broadcasting, fully extend the
telescopic antenna for a better reception. When receiving MW and
LW broadcasting, please rotate the radio or change its location to
achieve optimum reception. You can rotate the [VOLUME] knob to
adjust to an appropriate volume.
Now, you can turn into your favorite stations with any of the below
tuning methods:
METHOD 1: MANUAL STATION TUNING
Press the [VF/VM] button to enter the
frequency mode (VF), the frequency
display flashes twice. Now rotate the
[TUNING] knob to select your desired
station.
METHOD 2: AUTO BROWSE STATION
1. Press the [VF/VM] button to enter the
frequency mode (VF), the frequency
display flashes twice.
2. Press & hold the [VF/VM] button to
browse to the next available station,
pre-listening the station for five
seconds before continuing to browse.
3. To stop the auto browse function,
simply rotate the [TUNING] knob or
press on the [VF / VM] button again
to confirm on your desired station.
TUNING INTO STATIONS
MHz
SL EEP
Ni-MH
Battery
FM
0 1 2 3 4 5
flashing
Frequency mode
MHz
SL EEP
Ni-MH
Battery
FM
FAST
0 1 2 3 4 5
Auto browse station
flashing
Searching
Frequency
Notes:
1. While operating the “Auto Browse Station” function, you can press
the [MEMORY] button anytime to store the station into memory,
and the radio will keep on auto browsing the next available
station.
2. The "Auto Browse Station" function is not available for Air Band
and SW SSB frequencies.
6 PL-680

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METHOD 3: DIRECT KEYPAD ENTRY
1. Press the [VF/VM] button to enter the frequency mode (VF), the
frequency display flashes twice.
2. Press the numeric keys [0] - [9] to enter the station frequency
directly.
Notes:
1. Ignore the decimal point for FM band when inputting the
frequency numbers. For example, FM 89.3 MHz, just enter
8 9 3 .
2. If the entered frequency is not within the covered range, an error
symbol " " is displayed.
PL-680 7
TUNE IN STATIONS

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METHOD 1: STORING STATIONS MANUALLY
1. Press the [FM], [AM] (for MW and LW) or [SW] button for band
selection, then tune into your desired station.
2. Press the [MEMORY] button; the next available memory position
flashes.
3. Rotate the [TUNING] knob to specify your preferred memory
position.
4. Press the [MEMORY] button again to confirm. You can also wait
for 3 seconds to auto store the station into memory.
METHOD 2:
SEMI-AUTOMATIC STATION STORAGE
While operating the “Auto Browse
Station” (refer to page 06) function,
you can simply press the [MEMORY]
button to store the station into memory
to avoid unwanted stations.
NOTE: To store the station in a different memory page, press the
[ - PAGE + ] button.
8 PL-680
The PL-680 has 2000 station memories, which are organized over
12 memory pages.
1. Memory PAGE 0, noted as [P0], consists of 800 memories, 100
assigned for FM/MW/LW, 200 for SW & SSB and 100 for AIR
BAND.
2. Memory PAGE 1~12, noted as P1, P2, etc., each page consists of
100 memories, in total 2000 memories.
WORKING WITH STATION MEMORIES
FM
MW
LW
SW
SSB
AIR
PAGE P0
100
100
100
200
200
100
Memory for each Band ( 800) Memory among all Band (1200)
BAND
MEMORY
Each Memory
Page can store
100 Memories.
PAGE 01-12
ATS ATS
ATS is available
for all Memory
Pages (except
Air Band)
MHz
Ni-MH
Battery
FM
FAST
0 1 2 3 4 5
Auto browse station
flashing
Searching
Frequency

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PL-680 9
METHOD 3: ATS (AUTO TUNING STORAGE)
FM ATS:
1. Fully extend the telescopic antenna
and press the [FM] button to select
FM band.
2. To automatically store all available
stations, press & hold the [FM] button;
"PRESET" will flash in the top right
corner of the display while the frequency
starts running. The frequency stops running once the ATS
operation has completed. Rotate the
all stored FM stations.
MW/LW ATS:
1. Press the [AM] button to select MW/LW band.
2. Press & hold the [AM] button to perform ATS on the MW or LW
band.
[TUNING] knob to browse
MHz
SL EEP
PAGE PRESET
Ni-MH
Battery
FM
0 1 2 3 4 5
flashing
SW ATS:
Fully extend the telescopic antenna and press the SW [ ] or [ ]
button to select SW band. There are two modes for SW ATS tuning:
Mode A: Press & hold the [ ] button to ATS the stations within all
meter bands
Mode B: Press & hold the [ ] button to ATS the stations within
present meter band only.
Notes:
1. While performing ATS in FM, MW/LW or SW (mode A) bands,
previously stored stations are replaced by the newly found
stations.
2. While performing ATS in SW (mode B) band, previously stored
stations are not replaced. Instead, all newly found stations are
stored in blank memory positions.
3. If the surrounding area has too much interference or many
mirror/blank stations are stored during ATS, try to contract the
telescopic antenna (for FM and SW) or rotate the radio (for MW
and LW). Also try to push the [ANT. GAIN] switch into "NORMAL"
or "LOCAL" position. Then perform ATS again.
WORKING WITH STATION MEMORIES

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10 PL-680
WORKING WITH STATION MEMORIES
DELETE MEMORY
Press the [VF/VM] button to enter the memory mode; the memory
address shows in the upper right corner of the display.
METHOD 1: DELETE SINGLE MEMORY
Rotate the [TUNING] knob to select
the memory that you want to delete,
press & hold the [DELETE] button
with “ ” flashing; then press the
[DELETE] button to remove the
unwanted memory address.
Note:
If “ " is flashing more than 3 seconds without confirmation, it will
exit the delete function automatically.
METHOD 2: SEMI-AUTO DELETE MEMORY
Press and hold the [VF / VM] to auto browse stations, then you can
press the [DELETE] button anytime to direct delete the unwanted
station; the radio will keep on auto browsing the next available
station until you press any other button to stop this function.
0 1 2 3 4 5
Ni-MH
Battery
PAGE PRESET
Delete Single Memory
flashing
METHOD 3: DELETE ALL MEMORIES WITHIN A PAGE
Press & hold the [DELETE] button for
3 seconds and notice both “Memory
address” & “ ” flashing, then follow
with “Memory Page” and “ ” flashing
on the upper right corner of display.
Press the [DELETE] button again to
delete all memory within the selected
page.
Note:
If the [DELETE] button has not been pressed within 3 seconds to
confirm, it will exit the delete function automatically.
flashing
0 1 2 3 4 5
Ni-MH
Battery
PAGE PRESET
Delete ALL Memory

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WORKING WITH STATION MEMORIES
PL-680 11
AUTO SORTING MEMORY
To sort all stored stations automatically, turn the device off, then
press and hold the [ ] button for 2 seconds until the memory page
number in the upper right corner starts running.
This function is able to:
1. Remove duplicate stations. Especially useful after storing stations
manually, as you might store a station more than once.
2. Sorting the sequence of stored stations.
– In page P0, select your desired band to find all stored stations in
sequence of frequency (from low to high).
– In page 01-12, all stored stations are sorted in band sequence
(FM, SW, MW, Air band, LW) and placed in sequence of frequency
(from low to high).

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flashing
Select the band of your desired station,
then press the [VF/VM] button to enter
the memory mode; the memory address
shows in the upper right corner of the
display. Press the [- PAGE +] button to
select the memory page in which to
search for stored stations using any of
the below memory tuning methods.
METHOD 1: MANUAL MEMORY TUNING
Rotate the [TUNING] knob to tune around the stored stations.
METHOD 2: AUTO BROWSE MEMORY
Press & hold the [VF/VM] button to
browse to the next stored station,
pre-listening each station for five
seconds before continuing to browse.
While browsing, "PRESET" flashes on
the display. To stop browsing, rotate
the [TUNING] knob or press the
[VF/VM] button again.
METHOD 3: DIRECT KEY IN MEMORY ADDRESS
Press the numeric keys [0] - [9] to enter the memory address
directly, and then press the button to confirm.
Note: If the display shows “ ” symbol after entering the
number, it means the entered memory page/address does not exist.
LISTENING TO STORED STATIONS
BW
kHz
MW
SL EEP
PAGE PRESET
Ni-MH
Battery
0 1 2 3 4 5
Changing memory pages
flashing
Auto browse memory
MHz
SL EEP
PAGE PRESET
Ni-MH
Battery
FM
0 1 2 3 4 5
12 PL-680

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PL-680 13
1. In POWER OFF mode, press &
hold the [POWER] button untill
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 (the radio will be turned
on after 1 second).
Note: The default setting of the sleep timer is "ON ".
SLEEP FUNCTION
SL EEP
Ni-MH
Battery
0 1 2 3 4 5
SL EEP
flashing
Time selection for sleep timer
1. Press & hold the [TIME] button
the hours indicator starts flashing.
Rotate the [TUNING] knob to adjust
the hours, or directly input the time
by pressing the [ 0 – 9 ] numeric keys.
2. While the hours indicator is flashing,
press the [TIME] button again to
select the minutes indicator.
Rotate the [TUNING] knob to
the minutes, or directly enter
pressing the [0 – 9] numeric keys.
3. Short press the [TIME] button to confirm,
or wait for 3 seconds to automatically
confirm the time setting.
until
adjust
it by
TIME SETTING
Ni-MH
Battery
Timer A
Time setting
flashing

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14 PL-680
flashing
SETTING THE ALARM STATION:
1. Turn on the radio, then tune into your favorite station and adjust
your desired alarm volume level.
2. Press the [MEMORY] button and then immediately press the
[TIMER A] or [TIMER B] button and notice “ ” or “ ”
flashing on the display to confirm the preset alarm station.
SETTING THE ALARM TIME
1. Press & hold the [TIMER A] button
until the hours indicator starts
flashing in the upper right corner of
the display. Rotate the [TUNING]
knob to adjust the hours, or directly
enter the alarm time by pressing the
[ 0 – 9 ] numeric keys.
2. While the hours indicator flashes,
press the [TIMER A] button to select
the minutes indicator. Rotate the
[TUNING] knob to adjust the
or directly enter it by
[ 0 – 9 ] numeric keys.
3. Press the [TIMER A] button again,
then rotate the [TUNING] knob to
select from 1 - 90 minutes to set the
"Alarm Off Timer". This is the time
duration after which the radio will be
turned off automatically.
4. Press the [ALARM] button to confirm
the setting or wait for 3 seconds, the
unit will automatically confirm the
alarm setting.
Note: Follow the above instructions using the [TIMER B] button to
set a second alarm.
minutes,
pressing the
ALARM SETTING (By Radio only)
Ni-MH
Battery
A
SL EEP
Timer A
Setting timer for alarm off
AB

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PL-680 15
When the alarm goes off, press the [LIGHT/SNOOZE] button to
temporarily turn off the alarm. The alarm will go off again after 5
minutes.
Notes:
1. To turn off/on the alarm, press the [TIMER A] or [TIMER B] button;
the alarm is activated when the " " or " " symbol is displayed.
2. When the alarm goes off, press the [POWER] button once to
deactivate the "Alarm Off Timer"; press it twice to turn off the
radio.
3. If the preset alarm is activated when you are listening to the radio,
it will automatically switch to that station when the alarm goes off.
SNOOZE FUNCTION
AB
This device has an intelligent backlight function, meaning the
backlight is lid for about 5 seconds after operating any
keys or knobs.
TURN ON/OFF THE BACKLIGHT:
Press the [LIGHT/SNOOZE] button to illuminate the LCD for 30
seconds. Press it again to turn off the backlight.
Notes:
1. When the unit is powered by batteries, to reduce power
consumption, please try to avoid setting the backlight to 30-
seconds illumination.
2. When the unit is turned off, the 30-seconds illumination function is
turned off as well.
INTELLIGENT LIGHT FUNCTION

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flashing
16 PL-680
There are three tuning step speed
settings: slow, fast, and intelligent (slow &
fast). In Frequency Mode (VF), press &
hold the [STEP] button to select your
preferred setting.
The intelligent tuning step notices when
you rotate the [TUNING] knob in a slow or
fast way. When rotating fast, the tuning
steps will be larger.
TUNING STEP SETTINGS
TUNING
STEP
SLOW TUNING STEPS
0.01 MHz
1kHz
0.1MHz
9kHz / 10kHz
9kHz
5kHz
Slowly rotate the [TUNING] knob
25kHz
1kHz
1kHz
1kHz
FM
MW
LW
SW
AIR
BAND
FAST TUNING STEPS
1. When listening to radio broadcastings through stereo earphones,
press the [FM.ST] button to activate the stereo function; the " "
symbol appears on the display. If the FM signal is too weak, it is
advised to turn off the stereo function by pressing the [FM ST.]
button again; the " " symbol disappears.
2. When listening to FM stereo through a speaker, it is advised to
turn off the stereo function to improve sound quality.
3. The stereo function will not be activated and the " " symbol
will not appear if the FM station is not in stereo broadcasting.
FM ST. (FM STEREO)
Long-press
NOTE: intelligent tuning step is not available for Air Band.
Quickly rotate the [TUNING] knob

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PL-680 17
Wide Band
It has better audio fidelity when receiving
strong signals or local stations.
Narrow Band
It is suitable to receive weak and long
distance stations as the narrow band is
able to limit the interference from
adjacent strong signals and reduce
background noise.
AM BW (BANDWIDTH)
While listening to SW, push the
[ANT.GAIN] switch to "DX"
position for normal listening. For
stations with a strong signal or
strong electrical interference, push
the [ANT.GAIN] switch to either
"NORMAL" or "LOCAL" to achieve
better sensitivity.
ANT. GAIN
SL EEP
kHz
Ni-MH
Battery
Shortwave BW
0 1 2 3 4 5
Press the [AM BW] button to select your desired bandwidth for MW,
LW, SW, and SSB.
AM Bandwidth Indicator
TONE
TREBLE
BASS
ANT. GAIN
DX
NORMAL
LOCAL
Push the [TONE] switch upward for “TREBLE” listening, downward
or “BASS” tone.
TONE CONTROL
To activate the key lock function, press & hold the [ ] button;
the " " symbol appears on the display.
Press & hold the [ ] button again to unlock.
KEY LOCK FUNCTION

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18 PL-680
In power off mode, install 4 x UM3 (AA size) rechargeable (Ni-MH)
batteries to activate the built-in charging function. Connect the
external adaptor to start charging the batteries. The symbol " " will
advance from down to up while charging. It stops when the batteries
are fully charged.
When using non-rechargeable batteries, please turn off the charging
function; press & hold the [BATTERY] button, the " " symbol
disappears from the display.
Notes:
1. Before using new Ni-MH rechargeable batteries for the first time,
please charge them overnight. This will increase battery life.
2. Do not use batteries of different capacities at the same time.
3. Do not try to charge non-rechargeable batteries. This will damage
both the batteries and the device.
4. Please do not use an external adaptor with a different voltage, this
will damage the device.
5. When charging, if the external power adapter and the battery cover
become hot, this is normal.
INTELLIGENT CHARGING FUNCTION
1. In Shortwave mode, press the [SSB] button repeatedly to select
Upper Side Band (USB) or Lower Side Band (LSB).
USB” showing on the display indicates USB selection.
LSB” showing on the display indicates LSB selection.
USB” and “LSB” disappearing means switching to SW.
2. Enter the SSB frequency directly by pressing the numeric keys
[0 – 9].
3. Then fine tune the [SSB BFO] knob to achieve better sound fidelity.
“
“
“
SINGLE SIDE BAND (SSB)