Service Manuals, User Guides, Schematic Diagrams or docs for : Kenwood HF 50 MHz All Mode Transceiver HF 50 MHz All Mode Transceiver Kenwood TS-480HX & 480SAT B51-8667-00-BLSP
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TS-480HX/480SAT BLOCK DIAGRAM
PADDLE KEY
ANT1 ANT2 RF UNIT
X44-327
NB IN
DOT
KEY
DASH
KYS
~60MHz ~60MHz
PRE.OFF Q508
ATT ATT
2SC461
-12dB/-20dB Q153,154
RX 30k~1.705MHz
3SK131(M)x2
1.705MHz~
FINAL (ANT) (C/3) Add BC TRAP (E type)
PRE AMP ~60MHz
X45-365 (AT), 366 (200W)
AT Type ONLY OPTION
RX SW FILTER
1.705~2.5MHz 21.5MHz : Gain Change TX-RX (B
TX X57-663
Q156,157
Q160,161 Q253 D256 Q901
DET 2.5~4.1MHz 2SK520(K44)x4 XF151 3SK317 HSB88WS 3SK3
Vdet
AT Type
ONLY Idet
4.1~7.5MHz 73.095MHz
Q252 D254
LO2
TX ATT
VSF 2SC3356 ATT
DET 7.5~10.5MHz
VSR Q159
2SK2596 D9
LO1 D9
PGC
10.5~14.5MHz SW D/A IFGC
Q255 D/A
2SC3356
FINAL (FILTER) (B/3) 14.5~21.5MHz
X45-365 (AT), 366 (200W)
AGC
21.5~30.3MHz CKY
1.705~2.5MHz
CAR
30.0~49.0, 54.0~60.0MHz
2.5~4.1MHz
49.0~54.0MHz IC251
TA4107F IC8
IC802
NJ
4.1~7.5MHz POC + NJM2902V
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