Kenwood TK-7160 Modification Information

Also see for TK-7160: Instruction manual Service manual Specifications Brochure & specs Service manual

Contents

2 CONNECTING OPTIONAL DEVICESMOD (K)/Ver. 2.00 Confidential CONTENTS 272. Change configuration of the Scrambler Board.(1) The Scrambler Board (SC20-460) is shown inthe following figures.Top ViewBottom View(2) Adjust the audio level of the SC20-460 byreferring to the Installation Manual of theScrambler Board (SC20-460). C1 and R1 to R5installed on the back of the board must bereplaced with parts having the following valuesbefore adjusting the Audio level. (Refer to theSC20-460 Installation Manual for details.)Bottom ViewTable 2-18 SC20-460 Reconfiguration(3) Change the Scrambler Board configurationusing TR30-3060/ TR30-3061 softwareprovided by Transcrypt. The parameters can bechanged as below when adjusting Transmit,Receive and De-emphasis.• Miscellaneous Parameter #1 @ Bit Number4 (TX De-emphasis):Set to default “0”.• Miscellaneous Parameter #1 @ Bit Number3 (RX De-emphasis):Set to default “1”.Note: Refer to the system manual supplied with SC20-460.3. Prepare a cable with an 11-pin connector(E37-1080-x5) and a cable with a 12-pin connector(E37-1081-x5) for the SC20-460.Note: E37-1080-x5 (cable with 11-pin connector) andE37-1081-x5 (cable with 12-pin connector) are supplied asSERVICE PARTS.For RX For TXChange C1 to 1000 pF Change R2 to 15kΩChange R1 to 39kΩ Change R4 to 15kΩChange R3 to 330kΩSC20-460Cable with12-pin connectorCable with11-pin connector