Sailor R1120 Instruction Book
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7-7
A/S S. P. RADIO . AALBORG . DENMARK
INSTRUCTION BOOK FOR
RECEIVER R1119/R1120
VALID FROM
S,N,
255239
CONTENTS:
GENERAL DESCRIPTION ....................................... 2
TECHNICAL DATA ............................................ 3
CONTROLS .................................................. 5
DIRECTION FOR USE .........................................
7
PRINCIPLE OF OPERATION .................................... 9
AERIAL TUNE PROCEDURE .....................................
SERVICE: ..................................................
1. MAINTENANCE ............................................
2.
NECESSARY TEST EQUIPMENT ...............................
3.
TROUBLE-SHOOTING .......................................
14
16
16
17
21
4. PERFORMANCE CHECK ...................................... 24
5. ADJUSTMENT PROCEDURE ................................... 33
6. NECESSARY ADJUSTMENT AFTER REPAIR ......................
7.
FUNCTION CHECK ......................................... 45
41
PIN CONFIGURATIONS ........................................ 50
ADJUSTMENT LOCATIONS ...................................... 52
CIRCUIT DESCRIPTION AND SCHEMATIC DIAGRAMS
PARTS LISTS
MAIN SCHEMATIC DIAGRAM
GENERAL DESCRIPTION
INTRODUCTION
SAILOR
A2, A2H, Al & Fl signals in the.frequency range
RI120
is a main receiver intended for reception of A3, A3H, A3A, A3J,
10
kHz to 30 MHz.
SAILOR RI120 uses a digital synthesizer for frequency generation, and thus
can be set to any frequency in the above mentioned frequency range. The digital synthesizer is controlled from a key board or the built-in continuous tu-
ning wheel, the frequency selected is displayed on a six segment liquid cry-
stal display (LCD). The frequency stability is controlled from one 10 MHz TCXO.
SAILOR RI120 is prepared for use in conjunction with telex and faximile equipment.
SAILOR RI120 is provided with higher order tunable RF filters to ensure good
duplex performance. 0
SAILOR RI120 has automatical RF filter selection.
SAILOR R1120 fits into SAILOR lg'l rack system.
SAILOR RI120 can be supplied with a selfcontaining cabinet H1225, and an
AC/DC power supply N1405 with automatic change-over from AC to DC.
TECHNICAL DATA
The receiver is fully synthesized and has a frequency resolution of 100 Hz.
The receiver has a speech clarifier with a frequency control range of 2150 Hz.
The receiver is intended for reception of the following wave types A3 (A3E),
A3H (H3E), A3A (R3E), A3J (J3E), A2 (A2A), A2H (H2A), Al (AlA), Fl (FlB) and
2.4Fl (FIG).
-
30
Frequency ranges:
10
kHz
MHz
Tuning error:
Frequency drift, short time:
Frequency drift, long time:
Frequency drift: 0 - 40°C:
IF band width:
/
1 SSB/A3J
less than 30 Hz
less than 5 Hz
less than 25 Hz per year
less than 25 Hz
Also possibility for better figures for frequency drift when using another TCXO.
T
Max. pass band
at -60 dB
Classification
of reception
old new
+
350
I
Hz
- 300
+
3400
Hz
Hz
A3A R3E
A3J J3E
Fl FlB
2.4F4 FlC
2 9.5 kHz
A3 A3E
A3H
Al AlA
+
2800
Hz
A2
A2H H2A
H3E
A2A
Options:
CW/Al
V.Narrow
AUX
Telex
AUX
Telex
AUX
Telex
AUX
LSB
max. cl90 Hz
+
1300
Hz
+
1700
Hz
+
1500
Hz +
+ 1900 Hz
+
1700
Hz +
+
2100
Hz +
-
350
Hz +
-
2700
Hz -
2
1700
Hz
2 600 Hz
+
1075
Hz
+
1925
Hz
1275
Hz
+
2125
Hz
1475
Hz
2375
Hz
300
Hz
3400
Hz
Al AlA
Al
AlA
SP TYPE
Cl022
Cl023
Cl024
Cl013
TECHNICAL DATA cont.:
Sensitivity, 20 dB SN/N:
MF, A3J :
MF, A3H : 430 dB/l uV
HF, A3J :
HF, A3H :
HF, Al/Narrow: < 5 dB/l uV
Adjacent Channel Selectivity:
A3J:
A3:
Blocking:
Cross Modulation:
Intermodulation:
Operation Temperature Range:
cl6
dB/l uV
<IO
dB/l uV
<24 dB/l uV
>50
dB at
)55
dB at
>75 dB at
>55
dB at
>75
dB at -20 and +20 kHz
-1
and +4 kHz
-2
and +5 kHz
-5
and +B kHz
-10
and
+I0
kHz
wanted signal 60 dB/l uV
blocking level
wanted signal
cross modulation level
3rd order intermodulation
intermodulation level
-15Oc to +55Oc
7110
dB/l uV
60 dB/l uV
>I00 dB/l uV
raf = 30 kHz
,$JO dB/l uV
l
Spurious rejection:
Spurious emission:
image rejection
IF rejection
all others
Pout < 0.1 nW into 50 ohm
>60
dB
>60
dB
>70 dB
Audio outputs:
Loudspeaker 4W into 8 ohms
Headphones
60
mW into 8 ohms
Line 0 dBm into 600 ohms
Automatic gain control:
AM AGC: attack time approx.
decay time approx.
35
80
mSec
mSec
Q Vin q 40 dB
SSB AGC:
TELEX AK: attack time approx.
attack time approx.
hang time approx.
decay time approx.
2
mSec
3 Set
2
80
mS
mS
IF frequencies:
1st
IF:
2nd IF:
10.6085
600
MHz & 16.6085 MHz
kHz
4
'CONTROLS R1120
ED
KEYBOARD
1
0
Enters the frequency into the frequency synthesizer. The frequency shall be
entered in kHz, and only if a fractional kHz is wanted it is necessary to ac-
tivate the decimal point key. Before a new frequency is entered~, and if a
wrong figure is keyed in all the display is cleared by means of the Clear key C.
After clearing and keying in a new frequency, the receiver is blocked. Fur-
thermor the zero key and the decimal point key controls the CONTINUOUS TUNING
10
&
.
,a
g
2
2
0
3
0
m
5
0
6-
0
HEADPHONES
Receptable for headphones.
LOUDSPEAKER ON/OFF
Switches ON or OFF the loudspeakers.
NOISE GENERATOR
Removes the keyboard controlled receiver blocking and the aerial, and acti-
vates the built-in noise generator.
DISPLAY
Displays the keyed figures and finally the actual receiving frequency.
METER
Shows the field strength of the incoming signal.
l
CONTROLS cont.:
7
0
8
0
9
0
l 10
0
RF TUNE
Tunes the band filter to the chosen frequency.
BFO
Adjusts the beat note in Al mode.
FILTER
Chooses the wanted bandwidth in Al- and A2 mode, and disables the BFO in the
AUX. position.
CONTINUOUS TUNING
Is activated by pressing the decimal point key on the KEYBOARD @ , and
tunes over the full frequency range
sing the zero key on the KEYBOARD
MODE SWITCH
Switches between reception of fixed
A3H - (A3H and A3), A2 (A2 and A2H) and Al signals.
The tuning wheel can be disabled by pres-
0
.
2182
kHz (Distress), A3J - (A3J and A3A),
12
0
0
0 l3
14
0
15
0
16
0
AF GAIN
Controls the AF output and turns the mains on/off.
RF GAIN
Controls the overall RF amplification in the receiver.
AGC
Changes between slow (ON) and fast (TELEX) release time for the SSB AGC system
or switches OFF the AGC.
CLARIFIER
Provides incremental tuning over a +I50 Hz frequency range.
DIMMER
Controls the light intensity from the DISPLAY and the METER.
6
DIRECTIONS FOR USE
INITIAL SETrINGS
Turn on the receiver on the AF GAIN
and turn the AF GAIN
(12)
to approx. middle position.
(12)
or on the power supply N1400 or
N1401
Turn the CLARIFIER (15) to the center position, the RF GAIN (13) fully clock-
wise and the AGC SWITCH (14) to position ON. Choose the wanted mode of recep-
tion on the MODE SWITCH
(II).
(For further description of mode filter - and AGC
selection, please examine the paragraphs below).
FREQUENCY CONTROL
The frequency is controlled from the KEYBOARD
wheel. The wanted frequency must be entered into the KEYBOARD
(I)
and the CONTINUOUS TUNING (10)
(1)
in kHz and
is then displayed on the liquid crystal DISPLAY (5). The decimal point is only
to be used when a fractional kHz is wanted. After- entering a frequency the receiver is blocked and the CONTINUOUS TUNING
(10)
wheel is disabled.
After keying in a frequency you must press the NOISE GENERATOR (4) and adjust
RF TUNE (7) for maximum reading on the METER (6). For frequencies below 150 kHz
chosen there is no tuning to be done on the RF TUNE (7), just press NOISE GENERATOR (4) to unblock the receiver.
Now the wanted frequency is selected and the receiver front end is tuned. The
CLARIFIER (15) controls the frequency between the
For searching over a frequency range the CONTINUOUS TUNING
vated by pressing the decimal point key on the KEYBOARD
frequency is found the CONTINUOUS TUNING
(10)
100
Hz steps selectable.
(10)
wheel is acti-
(1).
When the desired
wheel can be disabled by pres-
sing the zero key on the KEYBOARD (I).
The CONTINUOUS TUNING (IO) wheel is able to tune the receiver over the full
frequency range
10
kHz to 30 MHz. It is necessary to follow the frequency tuning wheel with the front end tuning on the RF TUNE (7). Each time you pass a
band limit by means of the CONTINUOUS TUNING
limits: 150 kHz, 530 kHz, 1.6 MHz, 4 MHz, 7 MHz,
(10)
the receiver blocks. (Band-
14 MHz and 30 MHz). To unblock
the receiver again you must press the NOISE GENERATOR (4) and adjust the RF-
TUNE (7) for maximum METER (6) reading.
l
,P
s
>
s
0
DISTRESS
With the controls set as described under INITIAL SETTINGS above just turn the
MODE SWITCH
(II)
to DISTRESS
(2182
kHz.1 position.
Now the receiver is ready
for reception on the distress frequency, mode selection (AM) and front end tu-
ning is automatically done in the receiver.
SSB TELEPHONY
For normal telephony purpose turn the MODE SWITCH
(II)
to A3J (SSB) position.
Now SSB reception of normal upper sideband is established.
For SSB telephony purpose the preferable AGC
(14)
position is ON.
DIRECTIONS FOR USE cont.:
It is possible by means of the RF GAIN
(13)
to control the attack level for the
AGC system in such a way that signals below a certain level not attacks the AGC
system.
In noisy environments it can be advantageous to switch OFF the AGC (14) and con-
trol the gain by the RF GAIN
(13)
to avoid that noise impulses activates the AGC
circuit.
Another possibility for gain regulation under strong repetitive noise impulses
is to switch the AGC
(14)
to the TELEX position and turn the RF GAIN
(13)
fully
clockwise.
The AGC system now regulates the amplification down immediately and thus prevents the noise impulse to be heard in the loudspeaker. When the noise impulse
disappears again the amplification increases rapidly. This fast AGC system sup-
presses effectively noise impulses,
but for SSB purpose it furthermore introduces some distortion because of the missing hang time in this position. For that
reason it is only advantageous to use the TELEX AGC system when your environ-
ments is so noisy that the ON pos. is unusable.
GENERAL BROADCASTING
With the controls set as described under INITIAL SETTINGS above, turn the MODE
SWITCH
ency or search by means of the CONTINUOUS TUNING
(11)
to A3H (AM) position. Now you are ready to key in a wanted frequ-
(IO)
as described under FRE-
QUENCY CONTROL.
TELEX IN SSB MODE
For telex reception the receiver is operating as described under SSB TELEPHONY.
Because of the nature of the telex signal (it contains no envelope modulation)
is the most advantageous AGC
(14)
choice the TELEX one. The extremely good
noise performance of this AGC is fully utilized because no distortion can be
introduced.
Special attention must be paid to the frequency selected. The telex service fre-
quencies listed by the authorities are assigned frequency. For that reason you
must set the frequency either 1700 Hz or 1500 Hz below the assigned frequency,
depending upon the telex equipment used.
TELEX IN AUX, MODE IF TELEX FILTER IS FISTED
As in the TELEX IN SSB MODE except that the MODE SWITCH
(11)
is set to posi-
tion Al (CW) and the FILTER SWITCH (9) to position AUX.
WDLILATED TELEGRAPH
With the controls set as described under INITIAL SETTINGS above, turn the MODE
SWITCH
The AGC system now chosen is the SSB one,
(11)
to position A2 (MCW) and the FILTER SWITCH (9) to INTERMEDIATE.
and you must set the AGC (14) to the
most suitable position (ON or TELEX) after the present noise conditions.
TELEGRAPHY
With the controls set as described under INITIAL SETTINGS above, turn the MODE
SWITCH
(11)
to Al (CW) position and turn the FILTER SWITCH (9) to suitable band-
width. Now the receiver is ready for telegraphy reception and the BFO (8) is ope-
rational and can be tuned to a desirable beat note. For the same reasons as de-
scribed in the telex paragraph the most advantageous AGC
(14)
choice is the ON one.
e
PRINCIPLE OF OPERATION
9
Jj
RECEIVER Rllzo
The SAILOR
with
10.6085
The signal from the aerial is led through the BAND FILTER UNIT to the
FIRST MIXER, where the aerial signal is mixed with the fLO1 signal having frequency resolution of 1 kHz, and thus giving a 1st IF frequency
range from
R1120
or
10.6081
is a fully synthesized double superhetereodyne receiver
16.6085
MHz 1st IF and 600 kHz 2nd IF.
MHz to
10.6090
MHz or
16.6081
MHz to
16.6090
MHz.
PRINCIPLE OF OPERATION cont.:
The signal is then led through a double monolitic crystal filter to the
SECOND MIXER, where the signal is mixed with the fL02 signal having con-
tinuous tuning in the frequency range from
or
16.00795
600
kHz.
The
16.6085
13.9999
The protluced 2nd IF signal is led through one of the five filters available on the IF FILTER UNIT. The switching takes place electronically by
means of the MODE and/or the FILTER SWITCH.
The signal is then passed on to the IF2 AMPLIFIER and DETECTOR. The IF
amplifier consists of 3 AGC controlled amplifier stages. The detector for
both AM and SSB reception is an envelope detector, and in the SSB and CW
mode the carrier is reinjected in such a way that the incoming signal is
converted to an A3H signal.
MHz to
MHz
MHz and
16.00915
1st
IF is selected in the frequency range
10.6085
MHz, and thus giving a 2nd IF frequency of
MHz in the range
10.00795
14.0000
MHz to
MHz to 29.9999 MHz.
10.00915
0.0100
MHz to
MHz
l
The reinjected carrier in SSB mode is 600 kHz
ference oscillator, and in CW mode the carrier signal from the beat fre-
quency oscillator BFO is used.
kHz and 601.8 kHz.
The AGC DETECTOR AND AMPLIFIER consists of the AM AGC system and the hang
AGC system.
The audio frequency signal is fed from the detector to the AF FILTER AND
AMPLIFIER, consisting of an audio filter,
power amplifier, which delivers signal to the fixed AF output (0 dBm),
the headphones and the speakers.
FREQUENCY GENERATION
The necessary frequencies are generated by two frequency synthesizers according to the phase locked principle.
Local oscillator signal fLO, to FIRST MIXER is generated in the phase locked
loop
Local oscillator signal fL02 to SECOND MIXER is generated in the phase locked
loop 2 and has a resolution of
steps by means of the CLARIFIER.
1
and has a resolution of 1 kHz.
This frequency can be varied between 599.5
100
Hz, and continuous tuning over the 100 Hz
derived
a preamplifier and an output
from the 10 MHz re-
LOOP
The voltage controlled oscillator (VCO) generates the necessary local oscilla-
tor signal to FIRST MIXER in twelve 2 MHz bands selected by the BAND CONTROL
UNIT. Inside each 2 MHz band the VCO frequency fLOl
trolled voltage derived from the PHASE DETECTOR and filtered out in the LOOP 1
FILTER.
1
is controlled by a DC con-
10
PRINCIPLE OF OPERATION cont.:
The PHASE DETECTOR compares two signals, a variable frequency f
rence f+equency fR,. The reference frequency fR1 is the IO MHz
divided down to 1 kHz.
The variable frequency fV1 is generated from the VCO frequency fL0, in the
following way:
In the LOOP 1 MIXER the counter frequency fTl is produced as the difference between the VCO frequency fLO, and the frequency fHARM which is a multiple of 2
MHz derived from the 10 MHz TCXO.
= fLOl - fHARM = fLOl
fT1
For each 2 MHz band a new fLOl and fHARM is selected by the BAND CONTROL UNIT,
and it always results in a 2 MHz variation of the frequency fTl to PROGRAMMABLE
DIVIDER.
The frequency fT1 is divided down by a dividing figure NJ in the PROGRAMMABLE
DIVIDER to the variable frequency fV,.
fVl z fTl/Nl = 1 kHz
The working principle in a phase locked loop is as follows:
A frequency error between the variable frequency fV1 and the reference fre-
quency fRl will via the PHASE DETECTOR and the LOOP 1 FILTER cause a DC
control voltage controlling the VCO frequency and consequently the variable
frequency fV1 so that fV1 follows the reference frequency fR1 in frequency.
=
fR1
fVl
- (m x 2 MHz) q N1 x 1 kHz
q 1
kHz
The VCO frequency fL0, is now phase locked on a fixed frequency to the re-
ference frequency fRJ and has therefore the same accuracy as this.
Changing of the VCO frequency fLO1 by 1 kHz is carried out by changing the
dividing figure N1 in the PROGRAMMABLE DIVIDER by one.
fLol q fHARM + (N, X 1 kHz)
Principle of programming:
The PROGRAMMABLE DIVIDER contains a counter circuit counting down from a
start figure 2000 + PI and stops at the stop figure St. Each time the coun-
ter reaches the stop figure S,,
TOR, and the counter starts counting down again from the start figure 2000 +
PI. Division of fTl by N1 is now achieved.
fv, = fT,/N,;
a pulse (fV1) is fed to the PHASE DETEC-
N, = 2000 + P1 - S1
l
PRINCIPLE OF OPERATION cont.:
The BAND CONTROL unit selects the correct VCO- and HARMONIC FILTER range.
Inside each 2 MHz band the programmable figure PI, is encoded from the
KEY BOARD CONTROL unit in BCD code representing the frequency within the
2 MHz band.
l
Start figure: 2000 + Pi; 04P1
&I999
Stop figure: SI = -609
N, =
2000
+ Pl - S, q P1 + 2609
Output frequency from Loop
1:
fLOl = m x 2 MHz + (PI + 2069) x 1 kHz; 7rmd18
LOOP 2
The voltage controlled crystal oscillator (VCXO) generates the necessary
local oscillator signal to SECOND MIXER. The VCXO is in the Loop 2 system
phase locked to the internal
10
MHz reference frequency.
The phase locked loop principle is the same as for the Loop 1 system. The
only difference is that there are two mixers in the feed-back path, where
the one injection signal is a fixed
10
MHz 0~
16
MHz signal and the other
one fCL is the CLARIFIER signal.
The CLARIFIER has a frequency variation of
2150
Hz which results in a
2150 Hz variation of the VCXO frequency fLO2.
Principle of programming:
The frequency shift in Loop 2 is controlled from the
0.1
kHz code from the
KEY BOARD CONTROL UNIT.
The PROGRAMWBLE DIVIDER counts up from the start figure P2 to the stop
figure S2.
The
0.1
kHz code controls the start figure P2 to the PROGRAMMABLE DIVIDER.
Start figure: OhP2rz9
Stop figure: s2 q 20
Dividing figure:
N2 = S2
- P2 q 20 - P2
12
PRINCIPLE OF OPERATION cont.:
Output frequency from Loop 2:
fLO2 T:
fLO2 =
fLC2 =
10
MHz + fCL
10.007 MHz +I50
10.009
MHz
or:
fL02 =
fL02 :
fL02
RECE IVING FREQUENCY
fUX
- fIFl
16
MHz + fCL 2150 Hz + (N2 x 0.1 kHz)
16.007
q 16.009
MHz
MHz 2150 Hz - P2 x 0.1 kHz
FRX
+I50 Hz + (N2 x 0.1 kHz)
+150
-
+I50
Hz + (20 - P,) x
Hz - (P2 x 0.1 kHz)
Hz -I- (20 - P2) x 0.1 kHz
0.1
kHz
FOR RECEIVER R1119 & RlliO
+
fIF2
fLo2
f
IF2 = 0.600
10.009
fL02 =
fIF1
fLOl
For
16.009 MHz c 150
i
q
fIF2 + fio2 =
= m x 2 MHz + (P, + 2609) x 1 kHz,
0.0100
fFiX = fLOl - fIFl
MHz
MHz +
MHzLfRXL
= (m-4) x 2
150
Hz - (P;! x
Hz - (P2 x
lO.& 9 MHz - (P2 x
16.609
t
13.9999
MHz - (P, x
MHz
MHz + (P, + 0,l P2) x 1 kHz
For 14.0000 MHztfRXL29.9999 MHz
f
RX = fL02 - fIFl
=
(m-7)
x 2
MHz + (PI +
0,l
0,l
kHz)
kHz)
0,l
0,l
7Lmd18
0,l
kHz)
kHz)
P2) x 1 kHz
13
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