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Last modified 2016-10-15

Yaesu FT-902DM

A picture of Yaesu FT-902DM

SPECIFICATIONS

GENERAL
Type:Amateur HF transceiver
Frequency range: 10-160 m + WARC in 12 bands
1.8-2.0 MHz (160 m)
3.5-4.0 MHz (80 m)
7.0-7.5 MHz (40 m)
10.0-10.5 MHz (30 m)
14.0-14.5 MHz (20 m)
18.0-18.5 MHz (17 m)
21.0-21.5 MHz (15 m)
24.5-25.0 MHz (12 m)
28.0-28.5 MHz (10 m A)
28.5-29.0 MHz (10 m B)
29.0-29.5 MHz (10 m C)
29.5-29.9 MHz (10 m D)
Tuning steps:Continuous
Mode:AM/FM/SSB/CW/FSK
Channels/memory management:1 RX and 1 TX
Repeater shift/offset:No dedicated. Use VFO A/B split (with FV-902) or memory split
Power supply:13.5 VDC or mains: 100 / 110 / 117 / 200 / 220 / 234 VAC
Current drain/power consumption: RX: 1.1 A with heater off, 5 A with heater on (13.5 VDC)
RX: 45 W with heater off, 70 W with heater on (117 VAC)
TX: Max 21 A (13.5 VDC)
TX: Max 320 W (117 VAC)
Antenna impedance/connector:50-75 ohms / SO-239
Dimensions (W*H*D):342*154*324 mm (13.46*6.06*12.76")
Weight:18 Kg (39.7 lbs)
Other features:NB. 25 KHz calibrator. VOX. Built-in Curtis 8044 keyer
8.9 MHz IF output.




RECEIVER SECTION
Receiver system:Single conversion superheterodyne
IF: 8.9875 MHz
Sensitivity: AM: 1 uV (10 dB S/N)
FM: 0.3 uV (20 dB quieting)
SSB/CW/FK: 0.25 uV (10 dB S/N)
Selectivity
(Width control at 0):
AM: 6 KHz (-6 dB), 12 KHz (-60 dB) with optional AM filter installed
FM: 12 KHz (-6 dB), 24 KHz (-60 dB)
SSB: 2.4 KHz (-6 dB), 4 KHz (-60 dB)
CW: 600 Hz (-6 dB), 1.2 KHz (-60 dB) with optional CW filter installed
Image rejection: 10 m: better than 50 dB
12-160 m: better than 60 dB
AF output power/speaker:3 W at 10% distortion / ? ohms
External speaker connector:4-16 ohms




TRANSMITTER SECTION
RF output power: AM/FM/FSK: ~40 W (80 W DC input)
SSB/CW: ~100 W (180 W input)
Modulation system:AM: Low power stage
FM: Variable reactance
SSB: Balanced
Max FM deviation:5 KHz
Spurious emissions:Less than -40 dB
Microphone impedance/connector:500-600 ohms / 4-pin




MISCELLANEOUS
Manufactured:Japan, 1981-1982 (Discontinued)
Additional info:Tube hybrid: 1*12BY7A driver and 2*6146B finals
Related documents:User manual (4 MB)
Apparently, no specific service manual was printed for this radio.
However, an addendum to the FT-901DM service manual was
released that deals with the differencies.
Modifications:
Options/Accessories:
DC-901
FC-902
FTV-901R
FV-901R
SP-901
SP-901P
XF-8.9HC
YD-148
YO-901
YR-901
DC-DC converter
Antenna tuner
VHF/UHF transverter
External synthesized VFO with 40 memories
External speaker
External speaker with phone patch
CW narrow filter, 600 Hz
Desk microphone, 500 ohms/50 kohms switchable
Station monitor
CW/RTTY reader