Roberts | R737 | Specifications | Roberts R737 Specifications

Roberts R737 Specifications
Sound for Generations
ROBERTS
R737
3 Band Digital Preset Portable Radio
Please read this manual before use
Controls (top panel)
1
2
3
4
5
6
7
8
9
10
11
FM
12
13
15
14
S T
MHz
STANDBY
21
1. Headphone socket
2. Volume control
3. Tone control
4. Standby button
5. Mode button
1
20
6. Mono button
7. Sleep button
8. Memory button
9. Light button
10. Tuning indicator
19
18
17
11. Liquid crystal display
12. Tuning up button
13. Telescopic aerial
14. Power button
15. Tuning down button
16
16. FM button
17. MW button
18. LW button
19. Preset buttons
20. + 5 button
21. Standby switch
Controls (LH end)
Liquid crystal display
b
a
FM MW LW
c
ST
M
d
MHz
kHz
STANDBY
DC 9V
f
PIN -ve
e
PU9-B
22
INPUT 240V
50Hz
OUTPUT 9V
300mA
+
22.DC Socket
-
a. Waveband indicator
b. Stereo indicator
c. Memory indicator
d. Low battery indicator
e. Sleep time indicator
f. Standby indicator
2
General
Headphones
Do not allow this unit to be exposed to water, steam or sand. Do not leave
the unit where excessive heat could cause damage such as in a parked car
where the heat from the sun can build up even though the outside
temperature may not seem too high. It is recommended that the FM band
be used were ever possible as better results in terms of quality and freedom
from interference will usually be obtained than on the MW or LW bands.
A 3.5mm socket (1) is provided for use with either stereo headphones or an
earpiece. Inserting a plug into this socket automatically mutes the internal
loudspeaker.
Mains adaptor
Plug the adaptor into a 13A mains outlet. Plug the lead from the adaptor into
the DC socket (22). The battery will be automatically disconnected.
The mains adaptor should be disconnected from the mains supply when not
in use.
Batteries
Remove the battery cover on the base by releasing the catches and lifting
the cover up and out. Insert six IEC R14 (C size) cells into the compartment.
Replace the battery cover.
The radio switching off and the low battery indicator (d) showing in the
display are all signs that the batteries need replacing. Battery replacement
should be carried out within 2 minutes otherwise clock/memory settings will
be lost.
In order to maintain the clock and memory functions it is important that
batteries are fitted at all times.
We would recommend for economy, that the R737 is used via the
Mains adaptor whenever possible with battery operation for occasional or stand-by use only.
Aerials
On FM fully extend the telescopic aerial (13), angle and rotate for best
reception.
On MW and LW stations are received on the built in ferrite rod aerial, rotate
the entire radio to the position giving best reception.
The telescopic aerial is inoperative on MW and LW.
3
Setting the clock
Ensure the batteries are fitted and the power switch (14) is off.
Press and hold the mode button (5) until the display starts to flash. Release
the mode button. You now have 5 seconds to start the next procedure
otherwise the display will stop flashing and return to showing normal time.
Whilst the display is flashing use the tuning up button (12) to adjust the
minutes and the tuning down button (15) to adjust the hours. After approx.
5 seconds the display will stop flashing and return to a normal time display.
The time is displayed in 24 hour format.
Search tuning
Press the power button (14) to turn on the receiver.
Select a waveband. Turn the volume control (2) until sound is audible.
Press and hold either the tuning up (12) or tuning down button (15) for more
than 1 second to start the search tuning facility. The receiver will continue
searching until a station of reasonable strength is found. To search for
additional stations it is only necessary to repeat the above operation.
Search tuning may be stopped by a single press of either the tuning up or
tuning down buttons.
FM
Adjust the volume (2) and tone controls (3) to the desired level and tone of
sound.
Manual tuning
MHz
Press the power button (14) to turn on the receiver.
Select a waveband. Turn the volume control (2) until sound is audible.
Pressing the tuning up (12) or tuning down (15) buttons intermittently will
change the frequency up or down in steps. Each step is equal to 50kHz on
the FM band 9kHz on the medium waveband and 1kHz on the long
waveband.
Adjust the volume (2) and tone controls (3) to the desired level and tone of
sound.
Tuning indicator
The tuning indicator (10) will light up when stations are correctly tuned.
4
Memory tuning
You may store up to 25 stations in memory. 10 on FM, 10 on medium wave
and 5 on long wave.
Tune in the desired station as previously described.
Press the memory button (8) to open the memory a flashing 'M' will appear
in the display. While the 'M' is flashing press one of the preset buttons on
which you want to store the station. Press the memory button (8) to store
the station and close the memory. Repeat this procedure for the other 4
presets.
Note memory tuning can only be carried out while the 'M' in the display is
flashing.
On FM and MW a further 5 stations can be preset.
To set preset memory 6.
Press the memory button (8) to open the memory a flashing 'M' will appear
in the display. While the 'M' is flashing press the +5 button (20) and then
press preset button 1. Press the memory button (8) to store the station and
close the memory. The display will show 6 in the top right hand corner.
To set preset memory 7.
Press the memory button (8) to open the memory a flashing 'M' will appear
in the display. While the 'M' is flashing press the +5 button (20) and then
press preset button 2. Press the memory button (8) to store the station and
close the memory. The display will show 7 in the top right hand corner.
Repeat this procedure for presets 8-10.
To recall a station from preset memory
First select the waveband then press the required preset button. Presets 610 are accessed by pressing the +5 button followed by the required preset
button. e.g. to recall preset memory 8 press the +5 button followed by preset
button 3. Preset memories 6-10 are only available on FM and MW.
5
FM
M
MHz
Setting the standby time
Ensure that the receiver is switched off. Press the mode button (5) once,
the STANDBY symbol in the display will start to flash.
Press and hold down the mode button (5) until the STANDBY symbol and the
time shown in the display begin to flash. Release the mode button. You now
have 5 seconds to start the next procedure otherwise the display will stop
flashing and return to showing normal time.
While the display is flashing use the tuning up button (12) to adjust the
minutes and the tuning down button (15) to adjust the hours. After approx.
5 seconds the display will stop flashing and return to a normal time display.
The time is displayed in 24 hour format.
STANDBY
Waking up to the bleeper
Set the standby time as previously described. Set the standby switch (21)
to the 'bleep' position. Press the standby button (4) until the
STANDBY
symbol is shown in the display.
When the standby time is reached the bleeper will sound. The bleeper will
continue to sound for approx. 59 minutes or until the power button (14) is
pressed. The standby time (alarm) can be permanently switched on or off
by pressing the standby button (4). When the
STANDBY
symbol is
visible in the display, the standby time (alarm) is active.
Waking up to the radio
Set the standby time as previously described. Tune the radio to the required
station and set the volume level. Set the standby switch (21) to the 'radio'
STANDBY
position. Press the standby button (4) until the
symbol is
shown in the display.
When the standby time is reached the radio will turn on and will continue to
operate for approx. 59 minutes or until the power button (14) is pressed.
STANDBY
The standby time (alarm) can be permanently switched on or off by pressing
STANDBY
the standby button (4). When the
symbol is visible in the
display, the standby time (alarm) is active.
6
Sleep timer
The R737 has a built in sleep timer which will automatically switch off the
receiver after the preset time has elapsed.
Switch on the receiver and select the required station. Press and hold
down the sleep button (7) the timer will count down from 90 minutes in 10
minute steps. Release the sleep button when the desired sleep time is
reached. Sleep timer operation is shown by the
symbol in the display.
A further press of the sleep button will cancel the sleep timer.
Low battery indicator
The low battery indicator (d) on the display will flash and the radio will switch
off when the batteries are in need of replacement.
Stereo FM operation
Switch on the receiver and tune in the required station. Plug the earphones
supplied into the headphone socket (1). Press the mono button (6) until
the stereo indicator (b) in the display lights up. If the station being received
is weak some hiss may be audible, to reduce the hiss press the mono
button (6) to return to mono operation.
Note: FM stereo is only available via the headphone socket.
Light
Pressing the light button (9) will turn on the light and illuminate the display
for approximately 10 seconds.
7
FM
S T
M
MHz
Displaying the time
Specifications
While the radio is playing the time may be displayed by pressing the mode
button (5) once. After approximately 5 seconds the display will revert to
showing frequency.
Power Requirements 9.0V
Batteries
6 x IEC R14 (C size)
Battery Life
Approx. 60 hrs. of listening for 4 hours a day at
normal volume using alkaline cells.
Displaying the standby time
While the radio is playing the standby time may be displayed by pressing
the mode button (5) twice. The STANDBY symbol will flash in the display.
After approximately 5 seconds the display will revert to showing frequency.
With the radio switched off pressing the mode button (5) will display the
standby time. The STANDBY symbol will flash in the display. After approximately 5 seconds the display will revert to showing time.
Frequency Coverage
FM
87.5 -108MHz
MW
522 - 1620kHz
LW
144 - 281kHz
Circuit Features
Loudspeaker
100mm 8 ohms
Output Power
1 watt into 8 ohms
Headphone socket
3.5mm dia
Aerial System FM
Telescopic aerial
MW
Built-in Ferrite aerial
LW
Built-in Ferrite aerial
The Company reserves the right to amend the specification without notice.
8
Notes:
9
Guarantee
This instrument is guaranteed for twelve months from the date of delivery to the original owner against failure due to faulty workmanship or component
breakdown, subject to the procedure stated below. Should any component or part fail during this guarantee period it will be repaired or replaced free
of charge.
The guarantee does not cover:
1. Damage resulting from incorrect use.
2. Consequential damage.
3. Receivers with removed or defaced serial numbers.
N.B. Damaged or broken telescopic aerials will not be replaced under guarantee.
Procedure:
Procedure: Any claim under this guarantee should be made through the dealer from whom the instrument was purchased. It is likely that your Roberts'
dealer will be able to attend to any defect quickly and efficiently but should it be necessary the dealer will return the instrument to the company’s service
department for attention. In the event that it is not possible to return the instrument to the Roberts' dealer from whom it was purchased, please contact
Roberts Radio service department at the address shown on the rear of this manual before taking further action.
These statements do not affect the statutory rights of a consumer.
10
ROBERTS RADIO TECHNICAL SERVICES DEPARTMENT
97-99 Worton Road
Isleworth Middlesex
TW7 6EG
Issue 5
Technical Helpline:- 020 8758 0338 (Mon-Fri during office hours)
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