Tecsun PL-660 User Manual

www.tecsunradios.com.au
22...................................................................................PL-660
TROUBLE SHOOTING
QUESTIONS ANSWERS SOLUTIONS
Radio turn off while
listening.
- Batteries have no
power
- Sleep timer is being
activated.
- Replace all batteries.
-Turn on the radio again.
During ATS, some
station cannot be
stored.
Some stored station
with noise.
- Frequency of stations
are too weak.
- There is interference
near by your area.
- Search the station
manually.
- Low down the antenna
or move to other location
and try again.
Only limited FM
stations can be
received.
-FM frequency might be
set as 76~90MHz
accidentally.
- Turn off the radio, press
& hold the [FM SET]
button to select the
accurate FM frequency
range.
Poor AM reception in
USA.
- USA is using 10kHz
AM tuning step not
9kHz.
- Turn off the radio
press the [9/10kHz]
button to select
accurate tuning step.
The sound of SW
SSB broadcasting is
too low.
The default bandwidth
is Narrow band.
Press the [AM BW]
button to select the Wide
band.
Can not turn on the
radio.
- Batteries have no
power
- Installing batteries
incorrectly
- Key knob function is
being activated.
- Replace all batteries
new one.with
- Observing the
polarities of battery,
then re-install all
batteries again.
- Press the [ ] button
to deactivated it.

Tecsun PL-660 Specifications

Frequency Range

FM frequency range	76~108 / 87~108 MHz
MW frequency range	522~1620 / 520~1710 kHz
LW frequency range	100~519 kHz
SW frequency range	1711~29999 kHz
AIR frequency range	118~137 MHz

Sensitivity

FM sensitivity	Less than 3 uV
MW sensitivity	Less than 1 mV/m
LW sensitivity	Less than 5 mV/m
SW sensitivity	Less than 20 uV
SSB sensitivity	Less than 1 uV
AIR sensitivity	Less than 5 uV

Selectivity and S/N Ratio

FM selectivity	＞ 30 dB (±200 kHz)
MW/LW selectivity	＞ 40 dB (±9 kHz)
SW selectivity	＞ 40 dB (±5 kHz)
FM S/N ratio	Less than 60 dB
MW/LW S/N ratio	Less than 45 dB
SW S/N ratio	Less than 50 dB

AM Frequency

SSB, AM 1st IF	55.845 MHz
AM 2nd IF	455 kHz
FM IF	10.7 MHz

Output Power

Speaker output power	≥ 450 mW
Earphone output power	≥ 10 mW
FM Stereo crosstalk	Less than 20 dB