Heathkit SB-104 User Manual

TABLEOFCONTENTS
TEST AND ADJUSTMENTS ............ 233 Identification Charts ................ 279
FINAL ASSEMBLY
................ 247 VFO and Buffer Circuit Boards ........... 281
INSTALLATION Circuit Board Service Policy
............. 281
Fixed Station Installation
............. 249 Converter Circuit Boards .............. 286
Mobile Station Installation
............ 251 Display Circuit Board ............... 288
OPERATION
/+ Counter C~rcuit Board ........... 291
Control Functions
................. 257 HFOIPremixer Circuit Board ............ 294
Tune-up
...................... 259 g Transmitter AudioIReg C~rcuit Board ........ 296
Receiving
..................... 260 C Transmitter IF Circuit Board ............ 298
Transmitting
.................... 261 driver Circuit Board ................ 300
-
..............
TROUBLESHOOTING
VFO Filter Circuit Board
302
............
Introduction .................... 263 ck3 ALCIOUTPUT circuit Board
304
~~~~~i~~ the T~~~~~~
............... 264 E Carrier GenIXtal Filter Circuit Board ......... 306
VFO~B~~~~~ ~~~~bl~~h~~~~~~ id^
......... 2c4 G~eceiver Front End Circu~t Board .......... 308
R~~~~~~~ T~~~~~~~~~~~~~~ id^ ........... 266 F Receiver IFIAudio Circuit Board
........... 310
............
Transmitter Troubleshooting Guide
268[di~ower Amplifier Circuit Board
312
.........
Display Troubleshooting Guide ........... 270 SPEC~F~CAT~ONS ................. 315
Voltage and Continuity Checks ........... 272 THEORY OF OPERATION ............. 319
Test Chart ..................... 273 CHASSIS PHOTOGRAPHS 321
.............
Checking Transistors and Diodes ........... 274 FUNCTIONS AND CHASSIS
MAINTENANCE ............. 275 INTERCONNECTIONS (fold-outfrom page) .... 327 .?,
Circuit Board Schematic Index ............ 275 WARRANTY ............. Inside front cover
Pin-out Diagrams
................ 276 CUSTOMER SERVICE ......... Inside rear cover

Heathkit SB-104 Specifications

General

Brand	Heathkit
Model	SB-104
Category	Transceiver
Language	English