TECSUN

TECSUN
RADIOS AUSTRALIA

PL-680
PLL SYNTHESIZED RECEIVER
FM STEREO / MW / LW / SW-SSB / AIR BAND

OPERATION MANUAL

TECSUN RADIOS AUSTRALIA

TECSUN ELECTRONIC IND. LTD.
116
24/9 Powells Road, Brookvale, NSW 2100 Australia Ph: +61 2 9939 4377
Email: info@tecsunradios.com.au www.tecsunradios.com.au
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
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TABLE OF CONTENTS

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

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CONTROL LOCATIONS

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1 Power / Sleep button

2 Time set button
3 Timer A Alarm set button
4 Timer B Alarm set button
5 FM & SW Telescopic Antenna
6 Light / Snooze / Step button
7 VF / VM / SCAN
8 -/+ PAGE buttons
9 Air Band button
10 Single Side Band (SSB) button
11 Synchronous (SYNC) button
12 FM. ST & AM BW select button
13 FM / AM (MW, LW) / SW Band & ATS buttons
14 Delete / Enter button
15 Key lock button
16 Memory / Battery button
17 Hand Carry Strap
18 FM / SW Antenna Jack
19 ANT. Gain (DX / Normal / Local) switch
20 Treble / Bass Tone Control
21 Earphone Jack
22 DC 6V Jack

23 Metal Stand
24 Tuning Knob
25 SSB BFO knob
26 Volume knob
27 Reset button

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.

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LCD DISPLAY
1 2 3 4 5 6 7

Timer A
SL EEP
Timer B 8
0 1 2 3 4 5 Charge mb
PAGE PRESET
19 Ni-MH
Battery FAST 9
SLOW
18 kHz A B 10
AIR MHz
SYNC
17 FM MW LW Shortwave BW 11

16 15 14 13 12
1 Battery Consumption indicator
“ ” : Full
“ ” : Empty
2 Signal Strength indicator
“ 0 1 2 ”: Strong Signal
3 4 5

“ 0 1 2 ”: Weak Signal
3 4 5

3 Digital Number Display:

With radio off: Time & System settings
With radio on: Frequency or Error display
4 Sleep timer indicator
5 Alarm Timer A or B – Timer indicator
6 Charging Indicator
7 Digital Number Display:
With radio off: preset alarm time and charging time
With radio on: time, page & memory address, SW meter band displays.
8 SW meter band indicator
9 PAGE: Memory Page number
PRESET: Memory Address number
10 Alarm Timer A or B - On/Off indicator
11 Key-Lock indicator
12 Synchronous band detection
13 Single Side Band (SSB) indicator
USB: Upper Side Band
LSB: Lower Side Band
14 Tuning Speed:
Slow: Slow Tuning
Fast: Fast Tuning
KHz: frequency unit for MW, LW & SW
MHz: frequency unit for FM
15 AM Band width indicator
: AM Wide band
: AM Narrow band
16 FM, MW,LW and SW Band indicator
17 FM Stereo indicator
18 Air Band indicator
19 Ni-MH Rechargeable Battery indicator

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HOW TO TURN ON/OFF THE RADIO

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.

~220V AC CORD

2. Press the [POWER] button to turn on the radio.

Press

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.

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TUNING INTO STATIONS

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 flashing

Press the [VF/VM] button to enter the SL EEP

frequency mode (VF), the frequency Ni-MH

0 1 2 3 4 5

display flashes twice. Now rotate the

Battery

MHz
[TUNING] knob to select your desired FM

station. Frequency mode

METHOD 2: AUTO BROWSE STATION
1. Press the [VF/VM] button to enter the
frequency mode (VF), the frequency
display flashes twice. Searching
2. Press & hold the [VF/VM] button to Frequency flashing
browse to the next available station, SL EEP

pre-listening the station for five Ni-MH

0 1 2 3 4 5

seconds before continuing to browse.

Battery FAST

3. To stop the auto browse function,

MHz
FM

simply rotate the [TUNING] knob or

Auto browse station
press on the [VF / VM] button again
to confirm on your desired station.

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.

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TUNE IN STATIONS

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.

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WORKING WITH STATION MEMORIES

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.

BAND Memory for each Band ( 800) Memory among all Band (1200)
MEMORY PAGE P0 ATS PAGE 01-12 ATS
FM 100
MW 100 Each Memory ATS is available
LW 100 Page can store for all Memory
SW 200 100 Memories. Pages (except
SSB 200 Air Band)
AIR 100

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.

NOTE: To store the station in a different memory page, press the

[ - PAGE + ] button.

METHOD 2: Searching
SEMI-AUTOMATIC STATION STORAGE Frequency flashing
While operating the “Auto Browse
Station” (refer to page 06) function, 0 1 2 3 4 5

you can simply press the [MEMORY] Ni-MH

Battery FAST

button to store the station into memory MHz

FM
to avoid unwanted stations.
Auto browse station
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WORKING WITH STATION MEMORIES

METHOD 3: ATS (AUTO TUNING STORAGE)

FM ATS:
1. Fully extend the telescopic antenna flashing
and press the [FM] button to select
FM band. SL EEP

2. To automatically store all available Ni-MH

Battery
0 1 2 3 4 5
PAGE PRESET

stations, press & hold the [FM] button; MHz

"PRESET" will flash in the top right FM

corner of the display while the frequency

starts running. The frequency stops running once the ATS
operation has completed. Rotate the [TUNING] knob to browse
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.

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.

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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, flashing
press & hold the [DELETE] button
with “ ” flashing; then press the 0 1 2 3 4 5
[DELETE] button to remove the Ni-MH
Battery
PAGE PRESET

unwanted memory address.

Note: Delete Single Memory

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.

METHOD 3: DELETE ALL MEMORIES WITHIN A PAGE

Press & hold the [DELETE] button for
3 seconds and notice both “Memory flashing
address” & “ ” flashing, then follow
with “Memory Page” and “ ” flashing
on the upper right corner of display.
0 1 2 3 4 5
Ni-MH PAGE PRESET
Battery

Press the [DELETE] button again to

delete all memory within the selected
page. Delete ALL Memory

Note:
If the [DELETE] button has not been pressed within 3 seconds to
confirm, it will exit the delete function automatically.

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WORKING WITH STATION MEMORIES

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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LISTENING TO STORED STATIONS

Select the band of your desired station, flashing

then press the [VF/VM] button to enter
the memory mode; the memory address
shows in the upper right corner of the
SL EEP

0 1 2 3 4 5
PAGE PRESET

display. Press the [- PAGE +] button to

Ni-MH
Battery

kHz
select the memory page in which to MW BW
search for stored stations using any of
the below memory tuning methods. Changing memory pages

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
flashing
browse to the next stored station,
pre-listening each station for five SL EEP

seconds before continuing to browse.

0 1 2 3 4 5
PAGE PRESET
Ni-MH
Battery

While browsing, "PRESET" flashes on MHz

the display. To stop browsing, rotate FM

the [TUNING] knob or press the Auto browse memory

[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.

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SLEEP FUNCTION

1. In POWER OFF mode, press & flashing

hold the [POWER] button untill SL EEP

the sleep timer symbol " "

SL EEP
Ni-MH
Battery
0 1 2 3 4 5

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). Time selection for sleep timer

Note: The default setting of the sleep timer is "ON ".

TIME SETTING

1. Press & hold the [TIME] button until

the hours indicator starts flashing. flashing
Rotate the [TUNING] knob to adjust
the hours, or directly input the time
Timer A

Ni-MH

by pressing the [ 0 – 9 ] numeric keys.

Battery

2. While the hours indicator is flashing,

press the [TIME] button again to Time setting
select the minutes indicator.
Rotate the [TUNING] knob to adjust
the minutes, or directly enter it by
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.

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ALARM SETTING (By Radio only)

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 “
A ” B

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, flashing

press the [TIMER A] button to select
the minutes indicator. Rotate the
SL EEP Timer A

Ni-MH

[TUNING] knob to adjust the minutes, Battery

or directly enter it by pressing the

[ 0 – 9 ] numeric keys.
Setting timer for alarm off
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.

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SNOOZE FUNCTION

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 " A " or " " symbol is displayed.
B

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.

INTELLIGENT LIGHT FUNCTION

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.

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TUNING STEP SETTINGS

There are three tuning step speed

settings: slow, fast, and intelligent (slow & flashing
fast). In Frequency Mode (VF), press &
hold the [STEP] button to select your
preferred setting.
Long-press
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.

NOTE: intelligent tuning step is not available for Air Band.

TUNING
STEP SLOW TUNING STEPS FAST TUNING STEPS
Slowly rotate the [TUNING] knob Quickly rotate the [TUNING] knob
BAND
FM 0.01 MHz 0.1MHz
MW 1kHz 9kHz / 10kHz
LW 1kHz 9kHz
SW 1kHz 5kHz
AIR 1kHz 25kHz

FM ST. (FM STEREO)

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.

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AM BW (BANDWIDTH)

Press the [AM BW] button to select your desired bandwidth for MW,
LW, SW, and SSB.

Wide Band
It has better audio fidelity when receiving
strong signals or local stations. SL EEP

0 1 2 3 4 5
Ni-MH
Battery

Narrow Band kHz

It is suitable to receive weak and long Shortwave BW

distance stations as the narrow band is

able to limit the interference from AM Bandwidth Indicator
adjacent strong signals and reduce
background noise.

ANT. GAIN

While listening to SW, push the

[ANT.GAIN] switch to "DX"
ANT. GAIN
position for normal listening. For DX
stations with a strong signal or NORMAL
strong electrical interference, push LOCAL
the [ANT.GAIN] switch to either
"NORMAL" or "LOCAL" to achieve
TONE
better sensitivity.
TREBLE
BASS

TONE CONTROL

Push the [TONE] switch upward for “TREBLE” listening, downward

or “BASS” tone.

KEY LOCK FUNCTION

To activate the key lock function, press & hold the [ ] button;
the " " symbol appears on the display.
Press & hold the [ ] button again to unlock.

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INTELLIGENT CHARGING FUNCTION

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.

SINGLE SIDE BAND (SSB)

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.

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SYNCHRONOUS DETECTOR

When receiving AM broadcasting, if there is interference from

adjacent strong signals, you can activate the SYNC function to
improve the reception.
1. Press the [SYNC] button to select between “ SYNC ” or “ SYNC ” for
optimum reception.
2. To deactivate the SYNC function, press the [SYNC] button until
both " SYNC " and " SYNC " symbols are no longer on the display.

Notes: If the "SYNC" symbol keeps flashing, this indicates that the
radio signal is too weak or the frequency is deviant. It is
recommended to deactivate synchronous detection as it is
unable to function properly.

HOW TO IMPROVE FM / SW RECEPTION

Use the external wire antenna to plug into the [FM & SW ANTENNA]
jack, then position the opposite end outside the window for better FM
and SW reception.

external antenna for FM & SW

Window wall

FM & SW ANTENNA

Caution: Do not place the external antenna outdoors during a thunderstorm!

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SYSTEM SETTINGS (In Power Off Mode)

SETTING FM FREQUENCY RANGE:

Press & hold the [FM SET] button until 88-108MHz, 76-108MHz
or 87-108MHz appears on the display. Press the [FM SET] button to
select a suitable frequency range for FM.

TURN ON/OFF THE LW:

To turn ON/OFF LW, press & hold the [LW ON/OFF] button until "LW
ON" or "LW OFF" appears on the display.

SETTING MW (AM) TUNING STEP:

To select your desired AM tuning steps, press & hold the [9/10kHz]
button until "9kHz" or "10kHz" appears on the display.

TURN ON/OFF THE INTELLIGENT LIGHT FUNCTION

The Intelligent Light Function is activated by default, which will
illuminate the backlight for 5 seconds after operating any button or
knob. To deactivate, press & hold the [LIGHT SET] button until "OFF"
appears on the display; repeat the operation to reactivate.

Note: After deactivating the Intelligent Light Function, the

[LIGHT/SNOOZE] button can still be used to turn on/off the
back light.

TURN ON/OFF THE CHARGING FUNCTION

Using Regular Batteries for power supply:
In radio off mode, press & hold the [BATTERY] button until "CHA
OFF" is shown on the display. When the charging mode is
deactivated, "Ni-MH Battery" does not appear below the battery
consumption indicator.

Using Rechargeable Batteries for power supply:

In radio off mode, press & hold the [BATTERY] button until "CHA ON"
is shown on the display. When the charging mode is activated,
“Ni-MH Battery" appears below the battery consumption indicator.
Note: The default setting is for using rechargeable batteries. For a
correct battery power indication when using regular batteries,
deactivate the charging function.

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RESET PROCEDURE

If not functioning properly, you can reset the device by sticking a

pointed object (such as a straightened paper clip) into the reset hole
and gently press the [RESET] button.

Note: Resetting the device will not delete any station memories.

IMPORTANT MATTERS FOR USING BATTERIES

1. When the device is not powered by batteries or the adaptor for a

long time, the clock setting is lost, but the stored radio stations
are saved.
2. When battery power is low, the " " symbol starts flashing to
alert you to charge the batteries or change to new ones. The
device turns off automatically when all power is gone.
3. Do not mix new and used batteries, this may damage the radio
and display an incorrect power capacity.
4. In order to avoid leakage, always remove the batteries when the
unit will not be used for a long period of time.

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TROUBLE SHOOTING

QUESTIONS ANSWERS SOLUTIONS

Cannot turn on the - Batteries have no - Replace all batteries

radio. power with new ones.
- Batteries are installed - Take note of the correct
incorrectly. polarity direction, then
reinstall the batteries.
　
- Key lock function is - Press the [ ] button
activated. to deactivated it.

Radio turns off while - Batteries have no - Replace or charge all

listening. power batteries.
- Sleep timer is -Turn the radio on again.
activated.

During ATS, some - Frequency of stations - Search the station

stations cannot be is too weak. manually.
stored.
Some stored stations - There is interference - Contract the antenna or
have noise. near by your area. move to other location
and try again.

Only few FM stations - FM frequency may - Turn off the radio, press
can be received. have been set to & hold the [FM SET]
76 - 90MHz button to select the
accidentally. accurate FM frequency
range.

Poor AM reception in - USA uses 10kHz AM - Turn off the radio

USA. tuning steps, the press the [9/10kHz]
device may still be set button to select
to 9kHz. accurate tuning step.

The sound of SW The default bandwidth Press the [AM BW]

SSB broadcasting is is Narrow band. button to select the Wide
too low. band.

22 PL-680
TECSUN RADIOS AUSTRALIA www.tecsunradios.com.au

TROUBLE SHOOTING

QUESTIONS ANSWERS SOLUTIONS

When the alarm goes -Did not set the proper -Preset your alarm
off, there is only noise radio station for the station properly
in the broadcasting. alarm.
-Or there is no -Make sure it is possible
broadcasting at that to receive radio
frequency. broadcastings at your
location.

The charging time The rechargeable Replace the old

becomes shorter and batteries are getting old. rechargeable batteries
shorter. with new ones.

Radio malfunction. There may be some Remove the batteries.

form of interference, Reinstall the batteries
causing the microchip once the device's display
to not function properly. has turned off completely.
If the device is still not
working, please press
the reset button with a
pointed object.

PL-680 23
TECSUN RADIOS AUSTRALIA www.tecsunradios.com.au

SPECIFICATIONS

1. Frequency Range:
FM: 76~108 / 87~108 MHz Step: 0.01MHz /0.1 MHz
MW: 522~1620 / 520~1710 kHz
Tuning Step: 9K for North America or other countries/10K for South America
LW: 100~519 kHz Step: 1 kHz/ 9 kHz
SW: 1711~29999 kHz Step: 1 kHz/ 5 kHz
AIR:118~137MHz Step: 1kHz / 25 kHz

2. Sensitivity
FM (S/N=30dB) Less than 3uV
MW (S/N=26dB) Less than 1mV/m
LW (S/N=26dB) Less than 5mV/m
SW (S/N=26dB) Less than 20uV
SSB(S/N=10dB) Less than 1uV
AIR (S/N=10dB) Less than 5uv

3. Selectivity
FM ＞ 30 dB (±200kHz)
MW/LW ＞ 40 dB (±9kHz )
SW ＞ 40 dB (±5kHz

4. S/N Ratio
FM Less than 60dB
MW/LW Less than 45dB
SW Less than 50dB
5. AM Frequency
SSB, AM 1st IF: 55.845MHz
2nd IF: 455 kHz
FM: 10.7MHz

6. FM Stereo crosstalk Less than 20 dB

7. Output Power
Speaker ≥ 450 mW
　 Earphone ≥ 10 mW

24 PL-680
TECSUN RADIOS AUSTRALIA www.tecsunradios.com.au

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)

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

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

15. Weight: 475g (Batteries not included)

PL-680 25