Yaesu FT-747 Transceptor
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Modelo:
FT-747
Fecha:
0
Categoría:
Grupo:
Descripción:
Type manuel:
Manual de servicio
Páginas:
26
Tamaño:
15.58 Mbytes (16338990 Bytes)
Idioma:
english
Revisión:
Manuel-ID:
Fecha:
Formato:
Documento Scaneds, en parte leyendo mal, no parcialmente legible.
Fecha de subida:
2014 07 27
MD5:
01f0ab8563d1411a0b58d629a8d08fed
Descargas:
4377
Información
TOP COVER REMOVAL ... 2
EXPLODED VIEW ... 3
MAIN UNIT ... 4
Parts Layout 4
Circuit Diagram 5
FILTER UNIT ... 7
Parts Layout 7
Circuit Diagram 7
NB UNIT ... 7
Parts Layout 7
Circuit Diagram 7
LOCAL UNIT ... 8
Parts Layout 8
Circuit Diagram 9
100W PA UNIT ... 10
Parts Layout 10
Circuit Diagram 10
LPF UNIT ... 11
Parts Layout 11
Circuit Diagram 11
DISPLAY UNIT ... 12
Parts Layout 12
Circuit Diagram 13
CONNECTION DIAGRAM ... 14
LEVEL DIAGRAM ... 15
Transmit 15
Receive 16
SIGNAL PATH ... 17
SSB MODE ... 17
CW MODE ... 18
AM MODE ... 19
FM MODE ... 20
ALIGNMENT ... 21
I. Local Unit 23
II. Main Unit - Receiver 24
III. Main Unit - Transmitter 26
IV. Noise Blanker Unit 27
V. 100W PA Unit (Idling Current) 27
VI. LPF Unit (CM Coupler Balance) 28
VII. Main Unit (AFP - Automatic Final Protection) 28 PARTS
LIST 29
This manual is intended to serve as a supplement to the
FT-747GX Operating Manual. Detailed information regarding
functions, installation, interconnections and operation has
been provided in the Operating Manual, and is not reprinted
herein. Therefore, this supplement is not intended to serve
as an independent reference, but to be used in conjunction
with the information provided in the Operating Manual.
Because there are nearly two hundred and fifty semiconductor
devices in the FT-747GX
circuit description information is
provided in the form of numerous block diagrams. We hope
that this manner of providing functional information proves
to be more convenient for the owner and technician than
would a lengthy verbal description. Those readers unfamiliar
with the basic types of analog and digital circuits that
serve as the building blocks of the FT-747GX are encouraged
to study instructional material, such as that provided in
handbooks on amateur radio and digital circuit design,
before attempting to understand the design of the FT-747GX,
Each block in the block diagrams represents one such basic
circuit. General information on integrated circuits and
their applications is available in the data provided by the
1C manufacturers. Specific circuit details are provided in
the schematic diagrams in this manual.