Bang & Olufsen Beolit TR 36 User manual

1. () On/all Switch
To switch On the reo
ceiver. press this but- _
ton. To switch off,
press the same bullon
aeain.
1. Telescoping
Whips
3. Economy Indica-
tor
The greater tho red
area the more current
does the receiver con-
sume. '
4.1!IJ: Volume Con-
trol
S. Radicator
See detailed Inatruc-
tions In the section
RADICATOR.
6. ?: Sa_51Control
Advenctns this COn-
trol lrom the stop, In
the clockwise dlrec-
uon, Increases the baaa
range.
7. AM ~ial
8. Jack for External
Aerial
(Only plues with short
centre prones can be
used).
9, 't' Aerial Switch
(Auto button) and
AFe un 'off switch
(cull out AFe when
depressed).
10. Wave Band
To set the receiver to
the desired wave band.
preIs tbe bulton con-
cerned. Por Ustenin&
In the Ft-r· band, see
detailed instructions
under PM.
11. FM OiaJ
11. Tuning Control
Tune In the statlon
you want 10 listen 10.
Correct reproduction
will be obtained only
when the station has
been tuned in cor-
rectly. Adiust volume
II necessary.
13. , Treble Con-
trol
Advanclne this con-
uel Irom the stop, in
the clockwise direc-
tion Increases the
lreble range.
14. 0 Gramophone
Puoh-botton
15. Jack for
External Speaker
16. Jack for Gramo-
phone and
Tape Recorder

RAOICATOR
Your BEOUTTR 36 IS equipped with a Radicator. which indicates the battery
voltage and facilitates tuning.
To check the battery voltage. switch on the receiver and set its control so that
no station is being received. The easiest way of doing this is to depress the
medium-wave and short-wave buttons at the same time. The Radicator pointer
will go to the green section of the scale If the battery is OK If the pointer
goes only to the red scale section. the battery is spent andshould be replaced.
The set may still be able to work but it will not be capableof full performance.
and there Is a danqer that the dry cells may give off liquid. which may damage
the receiver.
To tune in a station, rotate the tuning control until the station you want to
listen to makes the Radicator pointer go as far to the right on the scale as
possible. When receiving on the built-In aerials of the receiver it is important
that you rotate the I eceiver and move it about until you find the position of
the receiver that Will bring the Radicator pointer as far to the right as possible.
Rotating the receiver and moving it about is especially important when you
want to listen to a weak station indoors as reception may vary considerably
between places only a few yards apart. due to water pipes. concrete reinforce-
ment. etc.
For direction finding (see section TAKING BEARINGS). the Radicator is used
as follows: While listening to the station whose direction you want to find.
tune for maximum Radicator indication (as far to the right as possible) and
then turn the receiver for minimum Radicator indication. - TheRadicatormakes
accurate direction finding easy.
RECEPTIONIN THE AM BA'NOS(Long. Medium. and Short Waves)
The receiver has a bullt-ln ferrite aerial which operates on long waves and
medium waves. On short waves. the riqht-hand one of the two FM whips func-
tions as AM aerial. For full sensitivity in the short-wave band the right·hand
whip should be pulled up to full length - without. however. laying it down flat.
Where reception is desired under poor conditions. for instance in a closed
motor-car or in a ferro-concrete building. best results will be obtained by con-
necting an external aerial to the receiver and cutting out the built-in ferrite
aerial on LW and MW by depressing the aerial button (the aerial button does
not deactivate the built-in whip on short waves).
If r.eceptionis poor indoors and no outdoor aerial is available. best results will
be obtained by placing the receiver near a window.
The ferrite aerial is mounted longitudinally in the receiver. and as It possesses
a certain amount of directivity the receiver should be rotated slowly back and
forth until best reception is obtained. Likewise. an undesired station can be
suppressed by similarly rotating the receiver for minimum signal from the
station in question. This may possibly reduce the signal from the desired sta-
tion as well. but since the angle over which the desired station is strong is
much greater than that in which the undesired station is suppressed. consider-
able improvement is possible with the procedure described.
When tuning to stations in the AM bands only the AM dial pointer will move.
TAKING BEARINGS
The directional properties of the receiver can be utilized for taking bearings.
The procedure is as follows: Tune in a station whose location you know. for
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instance one of the marine radio beacons operating between 300 and 320kc/s
in the long wave band. and then rotate the receiver for minimum signal. As
mentioned above. this direction is very well-defined. and the station will there-
fore be found on a straight line lengthwise through the receiver. Next. the
direction of the line through the station should be drawn on a map that is
oriented with respect to the four points of the compass. after which a
second bearing should be taken on another station. This bearing. too. should be
drawn on the map. and the location of the receiver will now be found as the
point where the two lines intersect. A check may be obtained by taking a third
bearlnq.
RECEPTION IN THE FM BAND
The built-In FM aerial is designed as a dipole consisting of two telescoping rod
sectlons.
If reception is poor. an lrnprovement may be obtained by pulling up the two dipole
sections beginning with the left-hand one. In some cases satisfactory reception
may be obtained by pulling only the left-hand section partly lip. A slight click
from a built-In ball lock indicates that the aerial has been pulled up to full
length. If reception is very poor. and for long-distance reception. you should
pull both dipole sections up to full length as described above and lay them
down In the horizontal plane. thereafter rotating the receiver for best reception.
If there is not enough room so that the aerial can be laid down flat. you may
leave it at an angle of 45 degrees. If you are in a closed car or a ferro-con-
crete building. where no improvement results from pulling the aerial up. you
will get better reception by connecting an cutside aerial to the aerial Jack.
which Is common to AM and FM.
4
On FM. the receiver has an automatic control circuit which keeps stations
correctly tuned, This circuit may be cut out by depressing the aerial button. (9)
When tuning to stations in the FM band. only the FM dial pointer will move.
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BATTERY
The receiver should be equipped with six dry cells (American standard: Type DJ_
The life of a set of dry cells is between 200 and 300 hours. depending. on the
type used and on the volume level at which the receiver is operated as the
current drain increases with the volume level.
Yo~ can replace the cells yourself - or you can have your dealer do the job
for you.
All six cells should be replaced at the same time. and the receiver may suffer
damage if left with spent cells In it. Regarding the proper time for battery
replacement. see the section RADICATOR.
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EXTIERNAl SPEAKER AND HEADPHON ES
The receiver has a jack (15) for connection of an external speaker or head-
phones. By connecting a good-quality external speaker you will get even better
volume and tonal performance than is possible with the small cabinet of J
transistor radio. By 'turning the plug over 180degrees you can choose whether
the built-in speaker is to be cut out while you are using the external speaker
or whether it is to operate together with the external speaker. A pair of head-
phones may likewise be plugged into the jack. but note that their impedance
should preferably be 5 ohms.
Jack plugs are obtainable at your dealer's.
5

GRAMOPHONE CONNECTION
The receiver has a Jack for connection of a gramophone (16). SWitching to
gramophone is done by depressing the gramophone push-button, Your dealer
can rewire your receiver to match your particular type of pick-up.
TAPE RECORDER CONNECTION
The receiver has a jack (16) for connection of a tape recorder. The jack is
wired so that It can be used for both recording and playback. For playback,
press the gramophone push-button.
The tape recorder is to be connected to the receiver through a cable
(obtainable at your dealer's).
b
AM Aerial:
TECHNICAL SPECIFICATIONS
FM Aerial:
Wave Bands:
Ext.ernal Speaker
Connection:
Gramophone Connection:
Battery Drain:
Battery:
Tape Recorder
Connection:
Speaker:
Dimensions In Inches:
Dimensions In rnm:
Power Output:
Weight:
Ferrite aerial for LW and MW. Telescoping whip
for SW. Jack for external aerial. Ferrite aerial may
be cut out on LW and MW.
Telescoping dipole. Jack for external aerial.
Long: 147- 320 kc/s, 204G-940 m.
Medium: 520-1600 kc/s, 578-188 m.
SW: 7- 16 Mc/s, 43- 19 m.
FM:
87,S- 108 Mc/s.
3.5 ohms, through DIN standard jack plug which
cuts out the built-in speaker.
Through DIN standard jack plug. Push-butlon
switching.
Low volume: approx. 16 mAo
50 mW output power: 57 mAo
6 American standard Type D dry cells.
Through DIN standard jack plug. Record and
Playback.
Oval 4.9X9.1 in. (125X230 mm).
12.9 in. wide, 8.8 in. high, 3.7 in. deep.
328 mm wide. 233 mm high, 95 mm deep.
1.4 watts.
7.8 Ibs. (3.55 kg) incl. of dry cells.

Transistors and Diodes:
Radlcator:
Sensitivities:
AF 106 Signal amplifier, FM
AF 124 Self-excited mixer, FM
1st IF amplifier, FM
AF 115 Self-excited mixer, AM
2nd IF amplifier, FM
AF 116 1st IF amplifier, AM
3rd IF amplifier, FM
AF 116 2nd IF amplifier, AM
AC 151 AF amp'lifier
AC 151 AF amplifier
AC 151 Driver for output stage
Two AC 153's in push-pull (output stage)
OA 79 Detector diode, AM
Two OA 79's Detector diodes, FM
BA 101 AFC diode
1.4 ST I Voltage stabilizer
Type 858 L 31 (R 101) comblned battery and
tuning indicator.
AM:
FM: 25 uV/m for 3 dB signal-noise separation. 3 uV/m for 26 dBsignal-noise separation.
PRINTED IN DENMARK
EKSPRCS ..TRYKKERIET. STRUI:R Form.252 264