Eddystone 990R - Technical Data; General; Transistor Complement

TECHNICAL LATA
GENERAL
Intermediate
Frequency
.
10.7
MHz-
Power
Supply
.
Single-phase
AC mains
100/130
and
200/260V
(40-60
Hz) or
12V LC.
Transistor
Complement
-
(WB%
Equivalent
types
may
be used where
necessary)
Ref
Type
Manufacturer
Circuit
Function
TR1
AF239
Siemens
RP Amplifier.
TR2
AF239
Siemens
Mixer.
TR3
AF239
Siemens
Local Oscillator
1*
(VFO)
TR4
GM
290
Texas
Frequency
Multiplier.
TR5 GM
290
Texas
Local Oscillator
2.
(CRYSTAL)
TR6
GM
290
Texas
Crystal
Oscillator
Isolator.
TR7
GM
290
Texas
External
Oscillator Isolator.
.
TR8
GM378
Texas
Crystal
Calibrator.
TR9
GET880
Mullard
Tone
Modulator.
TRIO
GM290
Texas
IF
Pre-amplifier.
TR11
GM290
Texas Narrow
Filter Input
Switch.
TR12
GM378
Texas
Narrow
Filter Output Switch.
TR13
GM290
Texas Wide
Filter Input Switch.
TR14
GM378
Texas
Wide
Filter Output
Switch.
TR15
GM378
Texas
IF Amplifier.
TR16
0/1378
Texas
IF Amplifier.
•
TR17
cm
Fairchild
IP
Amplifier.
TR18
GM290
Texas
Emitter Follower
1.
(IP
OUTPUT)
TR18A
GM
290
Texas
Emitter Follower
2.
(FM ISOLATOR)
TR19
GM290
Texas
FM
Limiter
Driver.
TR20
GM290
Texas
FM
Limiter.
TR21
ASY29
Mullard
RF AGC
Amplifier.
TR22
ASY29
Mullard
IF
AGC
Amplifier.
TR23
GM378
Texas
Beat Frequency
Oscillator.
TR24
GM378
Texas
}
CW Detector.
TR25
GH378
Texas
j
TR26
GET880
Mullard
1st Noise- Amplifier.
TR27
GET880
Mullard
2nd Noise Amplifier.
TR28
TR29
2N3704
2N3704
Texas
1
Texas
j
Relay
Trigger
(Muting)
.
TR30
GM378
Texas
Video Amplifier
(l).
TR31
GM378
Texas
j
Video Amplifier
(2).
TR
32
GET880
Mullard
|
^
Amplifier.
)
6000
Channel
TR33
OC72
Mullard
AF Output
, 7
TR34
GET880
Mullard
AF Amplifier,
i
TR35
AC127
Mullard
AF Amplifier. 1
TR
36
AC128
Mullard
AF
Driver.
i
30
Channel.
TR37
!
AC
127
Mullard
7
i
Complementary
j
TR38
!
AC128
Mullard
J
1
!
AF
Output.
)
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-
3
-
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Frequency
Coverage
.
27-240 KHz in four
ranges.
Range 1
Range
2
Range
3
Range
4
130
75
-
46
-
24
O
iffiz
130
MHz
76
Mz
(Nominal)
.
(Nominal)
.
(Nominal)
*
27
-
46
Mz
(Nominal).