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Last modified 2023-08-03

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Cobra 78X (By Dynascan)

A picture of Cobra 78X (By Dynascan)

SPECIFICATIONS

GENERAL
Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz
Channels / tuning steps:40
Mode:AM
Frequency control:PLL (TC9109P)
Frequency stability:0.005% @ -30 to +50°C (-22 to +122°F)
Clarifier or Delta tune:No
Power supply:13.8 VDC (3-pin connector)
Current drain / power consumption:RX: 0.25-1 A
TX: Max 1.5 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):152*54*188 mm (6*2.12*7.38")
Weight:1.27 Kg (2.8 lb)
Other features:PA. ANL.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity:0.5 uV (10 dB S+N/N)
Selectivity:7 KHz (-6 dB)
10 KHz (-60 dB)
Image rejection:70 dB
AF output power / speaker:3 W at 7% distortion / 16 ohm
External speaker connector:3.5 mm, 8 ohm




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




MISCELLANEOUS
Manufactured:Korea, 197x-197x (Discontinued)
Main PCB:PC-437AB by Uniden
Sub PCBs:PC-449AA - Channel selector board
Additional info:FCC data: 317
Related documents: User manual (4.7 MB)
AF amplifier: MB3712
PLL: TC9109P
RF driver: 2SC2028
RF final: 2SC2029
Sams Photofact #:CB-236 (December 1978)
Modifications and fixes:
Reviews:
Options / Accessories:
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A rear picture of Cobra 78X rear label (By Dynascan)