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Last modified 2022-01-14

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Colt 485 DX "Black Shadow SSB"

A picture of Colt 485 DX ''Black Shadow SSB''

SPECIFICATIONS

GENERAL
Type:Citizen band / "Freeband" / Export transceiver
Frequency range: 26.965-27.855 MHz in two bands:
Lo: 26.965-27.405 MHz
Hi: 27.415-27.855 MHz
Channels / tuning steps:80 (2*40)
Mode:AM / SSB
Frequency control:PLL (PLL02A)
Frequency stability:Max ? ppm
Clarifier or Delta tune:800 Hz
Power supply:13.8 VDC (2-pin connector)
Current drain / power consumption:RX: ? mA
TX: ? A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):190*64*254 mm (7.5*2.5*10")
Weight:2.72 Kg (6 lb)
Other features:PA. NB.




RECEIVER SECTION
Receiver system: Single conversion superheterodyne (SSB)
IF: 10.695 MHz
Double conversion superheterodyne (AM)
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity: AM: 1 uV (10 dB S/N)
SSB: 0.3 uV (10 dB S/N)
Selectivity: AM: 4 KHz (-5 dB)
SSB: 2 KHz (-5 dB)
Image rejection:50 dB
AF output power / speaker:3 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power: AM: 4 W
SSB: 12 W
Modulation system: AM: High and low level class B amplitud modulation
SSB: Balanced
Max FM deviation (Factory set):No FM
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1978-198x (Discontinued)
Main PCB:PTBM048AOX by Cybernet Electronics Corporation
Sub PCBs:
Additional info:
Related documents:PLL: PLL02A
Sams Photofact #:CB-227 (October 1978) NB! Non-DX version
Modifications and fixes:
Reviews:
Options / Accessories:
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A rear picture of Colt 485 DX Black Shadow SSB