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Last modified 2024-04-10

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Superscope Aircommand CB-640

A picture of Superscope Aircommand CB-640

SPECIFICATIONS

GENERAL
Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz
Channels / tuning steps:40
Mode:AM
Frequency control:PLL (uPD861)
Frequency stability:?%
Clarifier or Delta tune:±? KHz
Power supply:13.8 VDC (Fixed power cord)
Current drain / power consumption:RX: 300 mA (Squelched)
TX: Max 1.5 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):192*54*230 mm (7.56*2.12*9.06")
Weight:2.08 Kg (4.6 lb)
Other features:SWR-meter. Delta tune. CH9 dual watch.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 9.785 MHz
2nd IF: 455 KHz
Sensitivity:0.5 uV (10 dB S+N/N)
Selectivity:
Image rejection:50 dB
AF output power / speaker:6 W at ?% distortion / 8 ohm
External speaker connector:




TRANSMITTER SECTION
RF output power:4 W
Modulation system:
Max FM deviation (Factory set):No FM
Spurious emissions:Better than -60 dB
Microphone impedance / connector:? ohm / 5-pin (Male locking ring jack)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan (By Marantz), 1977-197x (Discontinued)
Main PCB:
Sub PCBs:
Additional info:
Related documents:
Sams Photofact #:CB-239 (December 1978)
Modifications and fixes:
Reviews:
Options / Accessories:
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A rear picture of Superscope Aircommand CB-640