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Last modified 2022-01-14

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Cobra 138 XLR (By Dynascan)

A picture of Cobra 138 XLR (By Dynascan)

SPECIFICATIONS

GENERAL
Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz
Channels / tuning steps:40
Mode:AM / SSB
Frequency control:PLL (uPD858C)
Frequency stability:0.001%
Clarifier or Delta tune:? Hz "Voice lock"
Power supply:11.7-15.9 VDC (3-pin connector)
Current drain / power consumption:RX: 1-2 A
TX: Max 2.5 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):200*60*267 mm (7.88*2.38*10.5")
Weight:2.27 Kg (5 lb)
Other features:PA. ANL/NB. Tone control. Dimmer.




RECEIVER SECTION
Receiver system: Single conversion superheterodyne
IF: 7.8 MHz
Sensitivity: AM: 0.75 uV (10 dB S+N/N)
SSB: 0.25 uV (10 dB S+N/N)
Selectivity: 4.2 KHz (-6 dB)
7 KHz (-60 dB)
Image rejection:50 dB
AF output power / speaker:3.5 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 (PEP)
Modulation system: AM: High- and low-level Class B
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 and Taiwan, 1977-1978 (Discontinued)
Main PCB:PC-196 By Uniden
Sub PCBs:
Additional info:FCC data: 138 XLR
Related documents:
Sams Photofact #:CB-126 (June 1977)
Modifications and fixes:
Reviews:
Options / Accessories:
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