Kenwood TS-990SE, Information

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Transmitter
Output power CW/SSB/FSK/PSK/FM (AM) 200 W (50 W)
Modulation SSB:Balanced, AM:Low Power, FM:Reactance
Maximum frequency deviation (FM) wide:Less than ±5 kHz, narrow:Less than ±2.5 kHz
Spurious emissions HF (Harmonics) : Less than -60 dB
HF (others) : Less than -50 dB
50 MHz: Less than -66 dB
Carrier suppression Less than -60 dB
Unwanted sideband suppression Less than -60 dB
Transmit frequency response Within -6 dB (200 ~ 2700 Hz)
Microphone impedance 600 Ω
XIT variable range ±9.999 kHz
Receiver
Circuit type Main Sub1 *2 Sub2 *3
Double Double Triple
superheterodyne superheterodyne superheterodyne
Intermediate 1st IF 8.248 MHz 11.374 MHz 73.095 MHz
frequency 2nd IF (FM) 24 kHz / (455 kHz) 24 kHz 10.695 MHz
3rd IF (FM) - - 24 kHz / (455 kHz)
Sensitivity SSB, CW, FSK, PSK Less than 0.5 μ V (0.13 ~ 0.522 MHz)
(S/N 10 dB) Less than 4 μ V (0.522 ~ 1.705 MHz)
Less than 0.2 μ V (1.705 ~ 24.5 MHz)
Less than 0.13 μ V (24.5 ~ 30 MHz)
Less than 0.13 μ V (50 ~ 54 MHz)
AM (S/N 10 dB) Less than 6.3 μ V (0.13 ~ 0.522 MHz)
Less than 32 μ V (0.522 ~ 1.705 MHz)
Less than 2 μ V (1.705 ~ 24.5 MHz)
Less than 1.3 μ V (24.5 ~ 30 MHz)
Less than 1.3 μ V (50 ~ 54 MHz)
FM (12 dB SINAD) Less than 0.22 μ V (28 ~ 30 MHz)
Less than 0.22 μ V (50 ~ 54 MHz)
Image Rejection Ratio (50 MHz) Less than 70 dB (60 dB)
IF Rejection Ratio Less than 70 dB
Selectivity SSB More than 2.4 kHz (-6 dB)
(LO:200 / HI:2800 Hz) Less than 4.4 kHz (60 dB)
CW, FSK, PSK More than 500 Hz (-6 dB)
(WIDTH:500 Hz) Less than 1.2 kHz (-60 dB)
AM More than 6.0 kHz (-6 dB)
(LO:100 / HI:3000 Hz) Less than 12 kHz (-50 dB)
FM More than 12 kHz (-6 dB)
Less than 25 kHz (-50 dB)
RIT variable range ±9.999 kHz