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Yaesu FT-990

A picture of Yaesu FT-990

SPECIFICATIONS

GENERAL
Type:Amateur HF transceiver
Frequency range: TX: 10-160 m + WARC
RX: 0.1 - 30 MHz
Tuning steps:10 / 100 Hz, 1 / 10 / 100 KHz
Frequency stability:10 ppm @ -10 to +50C (14 to 122F)
0.5 ppm option with TCXO-2
Mode:AM / FM / SSB / CW / RTTY / Packet
Channels / memory management: 90 regular
RAM storage with lithium battery backup
Repeater shift / offset:100 KHz
Power supply:Mains: 100-117 / 200-234 VAC (3-pin IEC C14 connector)
or 13.8 VDC (6-pin Molex connector)
Current drain / power consumption:RX: 60 VA (Mains) or 1.6 A @ 13.8 VDC
TX: Max 470 VA (Mains) or max 20 A @ 13.8 VDC
Antenna impedance / connector:50 ohm (16.5-150 ohm with ATU) / SO-239
Dimensions (W*H*D):368*129*335 mm (14.49*5.08*13.19")
Weight:13 Kg (28.66 lb)
Other features: NB. VOX. Attenuator. Iambic keyer. Automatic antenna tuner.
CTCSS/PL 88.5 Hz TX for repeater access.




RECEIVER SECTION
Receiver system: Triple conversion superheterodyne
1st IF: 47.21 MHz
2nd IF: 10.94 MHz
3rd IF: 455 KHz
Sensitivity: AM (6 KHz BW, 10 dB S/N)
0.1-0.25 MHz: 10 uV
0.25-0.5 MHz: 2 uV
0.5-1.8 MHz: 4 uV
1.8-30 MHz: 1 uV
FM (12 dB SINAD)
28-30 MHz: 0.5 uV
SSB/CW (2.4 KHz BW, 10 dB S/N)
0.1-0.25 MHz: 4 uV
0.25-0.5 MHz: 1 uV
0.5-1.8 MHz: 2 uV
1.8-30 MHz: 0.25 uV
Selectivity: Available bandwidths

ButtonModes-6 dB-60 dB
2.4 KHzAll except FM2.2 KHz4.0 KHz
2.0 KHzAll except AM/FM1.8 KHz3.6 KHz
500 HzCW/RTTY/Packet500 Hz1.8 KHz
250 HzCW/RTTY240 Hz700 Hz
--AM Wide6 KHz15 KHz
Image rejection:80 dB
AF output power / speaker:2 W at 10% distortion / 4 ohm
External speaker connector:3.5 mm, 4-8 ohm




TRANSMITTER SECTION
RF output power:

Max pwr
AM:25 W
FM:100 W
SSB (PEP):100 W
CW:100 W
RTTY/Packet:100 W
Modulation system: AM: Low-level (Early stage)
FM: Variable reactance
SSB: Balanced, filtered carrier
Max FM deviation (Factory set):2.5 KHz
Spurious emissions:Better than -50 dB
Microphone impedance / connector:500-600 ohm / 8-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1991-1999 (Discontinued)
Additional info:New price, october 1991 in Sweden: SEK 21815:-
Related documents: User manual (6.6 MB)
Service manual (52.6 MB)
Modifications and fixes:
Reviews: Practical Wireless: December 1991, page 20
QST: March 1991
Options / Accessories:
DVS-2
FIF-232C
FP-25
LL-5
MD-1C8
SP-6
TCXO-2
XF-10.9M-202-01
XF-455K-251-01
YH-77ST
Digital voice recording system
CAT system interface
Internal AC power supply
Phone patch unit. For SP-6
Desk microphone
External speaker with filters. Phone patch option
High stability master reference oscillator. 0.5 ppm
SSB filter. 2 KHz
CW narrow filter. 250 Hz
Lightweight headphones
A rear picture of Yaesu FT-990