Thank you for purchasing this new transceiver.IMPORTANT:Please read this Instruction Manual carefully beforeplacing the unit in service.SAVE THIS INSTRUCTION MANUAL.The following _explicit definitions apply in thismanual:Note : If disregarded, inconvenience only, norisk of equipment damage or personal in-jury.Caution : Equipment damage may occur, but notpersonal injury.This InstructionManualcoversthefollowingmodels:TS-140S : HF TransceiverTS-680S : All Mode Multi BanderIllustrations show the TS-140S.CONTENTS1. BEFORE OPERATION ................0:0ccsesseeeeeeeeeee 3 5-5. BLOCK DIAGRAM .............:cccccesenssenneneees 292. SPECIFICATIONS AND ACCESSORIES u4 5-6. CIRCUIT DIAGRAM. ..........ceeeeee seen Insert2-1. SPECIFICATIONS 4 6. MAINTENANCE AND ADJUSTMENTS 312-2. ACCESSORIES 5 6-1. GENERAL INFORMATION ......... 313. INSTALLATION AND CONNECTION. 6 G2. SERVICE otis ccsmcsasiies 313-1. INSTALLATION .... 6 6-3. CLEANING..............0 313-2. CONNECTION . 6 6-4. IN CASE OF DIFFICULTY... -324. OPERATION... as 9 6-5. ORDERING SPARE PARTS.... -334-1. OPERATING CONTROLS . oo 6-6. ADJUSTMENTS............ 334-2. RECEIVER OPERATION. ...........:c00seeeeeeeees 16 7. OPTIONAL ACCESSORIES .. .354-3. 7-1. CW FILTER INSTALLATION..... 354-4.4-5.4-6.5-15-2. TRANSMITTER SECTION5-3. RECEIVER SECTION5-4. CIRCUIT BOARD DESCRIPTION7-2. TU-8 TONE UNIT INSTALLATION..... .357-3. IF-10C INTERFACE KIT INSTALLATION......367-4. OTHER ACCESSORIES ........... 378. REFERENCE..............00..... -408-1. ANTENNA INSTALLATION. -408-2. MOBILE OPERATION.............. 418-3. RADIO FREQUENCY ALLOCATION............ 43