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1. Specifications
FM TUNER
SECTION
Tuning range
Usable sensitivity
50 dB S/N sensitivity
Signal to noise ratio
Distortion at 100 Hz
at 1 kHz
at 6 kHz
Intermodulation distortion
Capture ratio
Alternate channel selectivity
Image rejection
IF rejection
Spurious rejection
RF intermodulation rejection :
: 65 dB
: 45 dB
:50dB
: 40 dB
: 70 dB
: 3.2 wV/75 Q (21.3 cBf)
: 3.2 wV/75 Q (21.3 dBf)
AM suppression
Stereo separation at 100 Hz
at 1 kHz
at 10 kHz
Subcarrier rejection
Stereo threshold level
Muting threshold level
POWER
SPECIFICATIONS
_—
: 87.5 MHz — 108 MHz
: 0.9 wV/75 Q (10.3 dBf)
:Mono
1.8 uV/75Q
(16.3 dBf)
Stereo
8.7 uV/75 2
(30.0 dBf)
:Mono
81dB
Stereo
78dB
: 0.10 % (Mono),
0.15 % (Stereo)
: 0.08 % (Mono),
0.10 % (Stereo)
: 0.15 % (Mono and Stereo)
: 0.05 % (Mono),
0.08 % (Stereo)
: 1.0 dB
: 65 dB
: 90 dB
: 100 dB
: 100 dB
70 dB
(Mono and Stereo)
Frequency response
De-emphasis
Output level
Variable output
Fixed output
Recording level
Antenna input impedance
AM TUNER
SECTION
Tuning range
Usable sensitivity
Total harmonic distortion
Signal to noise ratio
Selectivity
Image rejection
IF rejection
Spurious rejection
Output level
Variable output
Fixed output
DIMENSIONS
WEIGHT (net)
: 50 Hz — 10 kHz +0.3 dB
30 Hz — 15 kHz +0.3 cB,
-0.8 dB
: 50 usec/75 usec
:0V—1.0 V/2.5 kQ
: 560 mV/2.5 kQ
: equivalent to 50 %
frequency modulation
: 75 Q unbalanced
: 525 kHz — 1605 kHz
: 300 pV/m (bar antenna)
50 uV (ext. antenna)
70.5%
: 50 dB
: 45 dB
: 45 dB
: 45 dB
: 45 dB
:0V — 0.6 V/2.5 kQ
: 350 mV/2.5 kQ
: 8.9 cm(H) x 45.0 cm(W) x
36.4 cm(D)
(3-8/16" x 17-3/16" x
14-4/16")
: 5.0 kg (11.0 Ibs.)
Design and specifications subject to change without notice.
Specifications in FM Tuner section are based upon IHF standard.
Designated Areas
Line Voltage & Frequency
Power Consumption
U.S.A.
CANADA
AC 120 V, 60 Hz
AC 120 V, 60 Hz
U.K., AUSTRALIA
CONTINENTAL
EUROPE
OTHER
AREAS
AC 240 V~, 50 Hz
AC 220 VV, 50 Hz
AC 110/120/220/240 V Selectable,
50/60 Hz
reer |
9W
9W
9W
9W
9W
2. Explanation of New Technology
2-(1) Phase Tracking Loop (PTL) FM Discriminator
A variety of circuitries have been applied to discriminators and various type of tuners incorporating these discriminators
have been marketed. Progress is being made in circuit integration of the discriminator and IF limiter portion as the IC to
secure their stability and reliability. The quadrature discriminator is mainly employed for such [Cs because of its stability
and productivity today. Common
ICs currently on the market are basically designed for quadrature type.
In the development of the tuner, unlike other audio equipment, stress is laid on raising the degree of harmony between
high fidelity and selectivity. One solution to this dilemma is to make the selectivity manually switchable between ''narrow"'
and ''wide''. However it is not a direct solution to improving the degree of harmony but it seems marketably acceptable.
The main
emphasis
in developing a tuner is to devise a discriminator circuit that is provided with both wide frequency
response and high interference rejection capability. Several approaches have been made toward reaching this ultimate goal.
ay oe
T-X5
No. 2468
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