Roberts Radio Portable Radio R737 User Guide

R737  
3 Band Digital Preset Portable Radio  
Please read this manual before use  
 
Controls (LH end)  
Liquid crystal display  
b c  
S T M  
a
FM MW LW  
d
MHz  
kHz  
STANDBY  
DC 9V  
PIN -ve  
f
e
PU9-B  
INPUT 240V  
50Hz  
OUTPUT 9V  
300mA  
22  
+
-
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  
beusedwereeverpossibleasbetterresultsintermsofqualityandfreedom  
from interference will usually be obtained than on the MW or LW bands.  
A3.5mmsocket(1)isprovidedforusewitheitherstereoheadphonesoran  
earpiece. Inserting a plug into this socket automatically mutes the internal  
loudspeaker.  
Mains adaptor  
Plugtheadaptorintoa13Amainsoutlet.Plugtheleadfromtheadaptorinto  
the DC socket (22). The battery will be automatically disconnected.  
Themainsadaptorshouldbedisconnectedfromthemainssupplywhennot  
in use.  
Batteries  
Remove the battery cover on the base by releasing the catches and lifting  
thecoverupandout.InsertsixIECR14(Csize)cellsintothecompartment.  
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  
shouldbecarriedoutwithin2minutesotherwiseclock/memorysettingswill  
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 occa-  
sional 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.  
Pressandholdeitherthetuningup(12)ortuningdownbutton(15)formore  
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.  
MHz  
Manual tuning  
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.  
FM  
M
Note memory tuning can only be carried out while the 'M' in the display is  
flashing.  
MHz  
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  
Firstselectthewavebandthenpresstherequiredpresetbutton. Presets6-  
10 are accessed by pressing the +5 button followed by the required preset  
button.e.g.torecallpresetmemory8pressthe+5buttonfollowedbypreset  
button 3. Preset memories 6-10 are only available on FM and MW.  
 
5
Setting the standby time  
Ensure that the receiver is switched off. Press the mode button (5) once,  
STANDBY  
the  
symbol in the display will start to flash.  
STANDBY  
Press and hold down the mode button (5) until the  
symbol and the  
timeshowninthedisplaybegintoflash.Releasethemodebutton.Younow  
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  
symbol is  
STANDBY  
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  
shown in the display.  
symbol is  
STANDBY  
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.  
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  
Thelowbatteryindicator(d)onthedisplaywillflashandtheradiowillswitch  
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.  
FM  
S T  
M
Note: FM stereo is only available via the headphone socket.  
MHz  
Light  
Pressing the light button (9) will turn on the light and illuminate the display  
for approximately 10 seconds.  
 
7
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 symbol will flash in the display.  
Afterapproximately5secondsthedisplaywillreverttoshowingfrequency.  
Frequency Coverage  
STANDBY  
FM87.5  
MW  
-1H08zM  
522 - 1620kHz  
144 - 281kHz  
LW  
With the radio switched off pressing the mode button (5) will display the  
standby time. The symbol will flash in the display. After approxi-  
mately 5 seconds the display will revert to showing time.  
Circuit Features  
STANDBY  
Loudspeaker  
Output Power  
100mm 8 ohms  
1 watt into 8 ohms  
Headphone socket  
3.5mm dia  
Aerial  
System FMTelescopic  
aerial  
MW  
LW  
Built-in Ferrite aerial  
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  
97-99WortonRoad  
IsleworthMiddlesex  
TW7 6EG  
Technical Helpline:- 020 8758 0338 (Mon-Fri during office hours)  
Issue 5  
 

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