Kenwood TS-990S Service Manual
Also see for SP-990: Instruction manual
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TS-990S16CIRCUIT DESCRIPTIONSSB/FMat Slope Tune [Hz]SSB/PSK*2at VBT [Hz] AM [Hz] CW [Hz] FSK [Hz] FSKtoneFSKshiftCenterfrequencyLOW CUT HI CUT WIDTH SHIFT IFBW LOW CUT HI CUT IFBW WIDTH IFBW SHIFT(L) SHIFT(H) WIDTH IFBW1275Hz170Hz 1360HzzH5731zH0020720520008-07205k6k5.2007200010500010zH52400500305057-07208k6k0.3001072001108002105 1487.5Hz100 1400 100 1200 270 200 4.0k 15k 100 270 -700 100 400 500 850Hz 1700Hz200 1600 150 1300 270 300 5.0k 15k 150 270 -650 150 500 5002125Hz170Hz 2210Hz300 1800 200 1400 270 200 270 -600 200 1000 2.7k 200Hz 2225Hz400 2000 250 1500 270 250 270 -550 250 1500 2.7k 425Hz 2337.5Hz500 2200 300 1600 500 300 500 -500 300 850Hz 2550Hz600 2400 400 1700 500 400 500 -450 350700 2600 500*3 1800 500 500*1 500 -400 400800 2800 600 1900 2.7k 600 2.7k -350 450900 3000 1000 2000 2.7k 1000 2.7k -300 5001000 3400 1500 2100 2.7k 1500 2.7k -250 5504000 2000 2210 2.7k 2000 2.7k -200 6005000 2200 2.7k 2500 2.7k -150 6502400 2.7k -100 7002600*4 2.7k -50 7502800 6k 8003000 6k Initial value*1 In CW mode, the DSP filter width is displayed as 500Hz; however, the DSP filter width is actually 600Hz.*2 LOW CUT: Low-cut frequency; HI CUT: High-cut frequency; WIDTH: Bandwidth; SHIFT: Center frequency (SSB);SHIFT (L/H): Amount of change from the center frequency (CW); IFBW: Bandwidth with the roofing filter set to AUTO (default value).*3 The initial value of PSK mode is 500 Hz.*4 The initial value of SSB (WIDTH/SHIFT) mode is 2600 Hz.Item XF5: L71-0674-05 XF6: L71-0673-05Nominal center frequency 8.248MHz 8.248MHzPass bandwidth ±250Hz or more at 6dB ±135kHz or more at 6dBAttenuation bandwidth ±1.4kHz or less at 60dB ±400Hz or less at 60dBRipple 2dB or less 2dB or lessInsertion loss 4dB or less 6dB or lessGuaranteed attenuation 70dB or more at fo±48kHz 70dB or more at fo±48kHzCenter frequency deviation Within fo±100Hz Within fo±50HzTerminating impedance 50Ω 50ΩItem CF1: L72-0376-05 CF2: L72-0372-05Nominal center frequency 455kHz 455kHzPass bandwidth ±4.5kHz or more at 6dB ±6kHz or more at 6dBAttenuation bandwidth ±10kHz or less at 50dB ±112.5kHz or less at 50dBRipple 2dB or less 3dB or lessInsertion loss 6dB or less 6dB or lessGuaranteed attenuation 35dB or more at fo±100kHz 35dB or more at fo±100kHzCenter frequency deviation - -Terminating impedance 2kΩ 2kΩTable 9 (2/2) IF filter specificationsTable 10 RX IF filter settings |
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