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Last modified 2022-01-14

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Colt 485 "Black Shadow SSB"

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


Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz
Channels / tuning steps:40
Mode:AM / SSB
Frequency control:PLL (PLL02A)
Frequency stability:0.003% @ -30 to +50C (-22 to +122F)
Clarifier or Delta tune:800 Hz
Power supply:10.5-16 VDC (2-pin connector)
Current drain / power consumption:RX: 0.5 to 1.5 A
TX: Max ? 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. ANL/NB.

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

RF output power: AM: 4 W
SSB: 12 W (PEP)
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

Manufactured:Japan, 1978-197x (Discontinued)
Main PCB:PTBM048AOX by Cybernet Electronics Corporation
Sub PCBs: PTLD010COX - LED display board
PTSW020COX - Channel selector board
Additional info:FCC data: Colt 485
Related documents: User manual (2.9 MB)
Schematic diagram (138 KB)
Sams Photofact #:CB-227 (October 1978)
Modifications and fixes:
Options / Accessories:
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