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Last modified 2022-11-12

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Colt 444 AM/FM

A picture of Colt 444 AM/FM


Type:Citizen band / "Freeband" / Export transceiver
Frequency range: 26.515-27.855 MHz in three bands:
Lo:   26.515-26.955 MHz
Mid:   26.965-27.405 MHz
Hi:   27.415-27.855 MHz
Channels / tuning steps:120 (3*40)
Mode:AM / FM
Frequency control:PLL (uPD2810C)
Frequency stability:Max ? ppm
Clarifier or Delta tune:No
Power supply:13.8 VDC (Fixed power cord)
Current drain / power consumption:RX: 190-650 mA
TX: 0.7-1.9 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):180*60*198 mm (7.09*2.36*7.8")
Weight:2.3 Kg (5.07 lb)
Other features:

Receiver system: Double conversion superheterodyne
1st IF: 10.7 MHz
2nd IF: 455 KHz - Ceramic filter: CFU455H2 or LFB6
Sensitivity: AM: 1 uV (10 dB N/S+N)
FM: 0.7 uV (20 dB S/N)
Image rejection:
AF output power / speaker:4 W at ?% distortion / 8 ohm
External speaker connector:3.5 mm, 4-8 ohm

RF output power: Hi: 10 W
Mid: 5 W
Lo: 0.5 W
Modulation system:
Max FM deviation (Factory set):1.5 KHz (1.25 KHz, 20 mV)
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / 4-pin (Metal locking ring connector)
Microphone input level:20 mV @ 1.25 KHz

Manufactured:Japan, 198x-198x (Discontinued)
Main PCB:
Sub PCBs:
Additional info:
Related documents: User manual (5.9 MB)
Enhanced schematic diagram (1.5 MB)
Sams Photofact #:None
Modifications and fixes:
Options / Accessories:
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