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Last modified 2022-06-06

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Mega Star MG-990TW

A picture of Mega Star MG-990TW with silver faceplate

SPECIFICATIONS

GENERAL
Type:Citizen band / "Freeband" / Export transceiver
Frequency range: 25.615-28.315 MHz in six bands
A: 25.615-26.055 MHz
B: 26.065-26.505 MHz
C: 26.515-26.955 MHz
D: 26.965-27.405 MHz
E: 27.415-27.855 MHz
F: 27.865-29.305 MHz + 10 KHz
Channels / tuning steps:271 (Including +10 KHz "Alphas")
Mode:AM / FM / SSB / CW
Frequency control:PLL
Frequency stability:0.001% @ -30 to +50C (-22 to +122F)
Clarifier or Delta tune:Coarse (RX/TX): ? KHz
Fine: 1 KHz
Power supply:11.7-15.9 VDC (3-pin connector)
Current drain / power consumption:RX: 0.3-1.2 A
TX: Max 6 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):? mm (?")
Weight:? Kg (? lb)
Other features:ANL/NB. Roger beep. +10 KHz switch. Dual echo. SWR meter.




RECEIVER SECTION
Receiver system: Single conversion superheterodyne (SSB/CW)
IF: 10.695 MHz
Double conversion superheterodyne (AM/FM)
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity: AM: 1 uV (10 dB S+N/N)
FM: 1 uV (20 dB S+N/N)
SSB: 0.25 uV (10 dB S+N/N)
Selectivity: AM/FM: 3 KHz (-6 dB), 9 KHz (-50 dB)
SSB: 2.1 KHz (-6 dB), 3.3 KHz (-60 dB)
Image rejection:65 dB
AF output power / speaker:4 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power: AM: 10 W
FM: 10 W
SSB: 25 W (PEP)
Modulation system:
FM deviation (Factory set):? KHz
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Malaysia and Vietnam, 199x-20xx
Main PCB:
Sub PCBs:
Additional info:
Related documents:
Sams Photofact #:None
Modifications and fixes:
Reviews:
Options / Accessories:
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A picture of Mega Star MG-990TW with black faceplate