Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S9CIRCUIT DESCRIPTION● IFA=73MFrequency: 0.03 ~ 60MHzSUB RX IFASLO1AD9951 (SDEN1)USB USB-DATA LSB LSB-DATA CW CW-R PKS PKS-R FSK FSK-R AM FM(FM-DATA)Filter offset 1 +(SDSPFC) +(SDSHIFT ) -(SDSPFC) -(SDSHIFT) +(CW SHIFT) -(CW SHIFT) 0 0 -(FSK SHIFT/2) -(FSK SHIFT/2) 0 0RIT (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT)SUB CAR IF10M_2.7k +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) - -● IFB=11MFrequency: 0.03 ~ 21.5MHzSUB RX IFBSLO1AD9951 (SDEN1)USB USB-DATA LSB LSB-DATA CW CW-R PKS PKS-R FSK FSK-RFilter offset 1 +(SDSPFC) +(SDSHIFT) -(SDSPFC) -(SDSHIFT) +(CW SHIFT) -(CW SHIFT) 0 0 -(FSK SHIFT/2) -(FSK SHIFT/2)RIT (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT) (SRIT)SUB CAR IF11M_2.7k +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2)IF11M_500 +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3)SLO3AD9835 (SDEN2)USB USB-DATA LSB LSB-DATA CW CW-R PKS PKS-R FSK FSK-R AM FM(FM-DATA)Filter offset 1 +(SDSPFC) +(SDSHIFT) -(SDSPFC) -(SDSHIFT) +(CW SHIFT) -(CW SHIFT) 0 0 0 0 0 0SUB CARIF10M_2.7k +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) - -IF11M_2.7k +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) +(SCAR2) - -IF11M_500 +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) +(SCAR3) - -( SRIT): Sub RIT frequency variable amount (–9.99~+9.99kHz)(FSK SHIFT): FSK shift width frequency (170Hz, 200Hz, 425Hz, 850Hz, and initial value: 170Hz)(CW SHIFT): CW shift amountCAR correction: SSB IF-Filter adjustment range(SCAR1): IF 10.695MHz SSB IF fi lter (2.7kHz) correction value(SCAR2): IF 11.374MHz, IF fi lter (2.7kHz) correction value(SCAR3): IF 11.374MHz, IF fi lter (500Hz) correction value(SDSPFC): Varied with the DSP fi lter set value(SDSHIFT): DATA mode shift width frequency set valueTable 2 SLO1/SLO3 (When receiving) frequency shift data● IF=73MFrequency: 0.03 ~ 60MHzTXTLO1DDS AD9835 (SDEN3)USB USB-DATA LSB LSB-DATA CW CW-R PKS PKS-R FSK FSK-R AM FM (FM-DATA)Filter offset 1 +1.5k +1.5k -1.5k -1.5k 0 0 0 0 -(FSK SHIFT/2) -(FSK SHIFT/2) 0 0XIT (XIT) (XIT) (XIT) (XIT) (XIT) (XIT) (XIT) (XIT) (XIT) (XIT) (XIT) (XIT)CAR *1 IF10M_2.7k +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) - -SLO3DDS AD9835 (SDEN2)USB USB-DATA LSB LSB-DATA CW CW-R PKS PKS-R FSK FSK-R AM FM (FM-DATA)Filter offset 1 +1.5k +1.5k -1.5k -1.5k 0 0 0 0 0 0 0 0CAR IF10M_2.7k +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) +(SCAR1) - -(XIT): XIT frequency variable amount (–9.99~+9.99kHz)(FSK SHIFT): FSK shift width frequency (170Hz, 200Hz, 425Hz, 850Hz, and initial value: 170Hz)CAR correction: SSB IF-Filter adjustment range(CAR1): IF10.695MHz SSB Normal Filter correction valueTable 3 TLO1/SLO3 (When transmitting) frequency shift data