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Last modified 2021-05-29

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Cobra 148 GTL-DX (By Dynascan)

A picture of Cobra 148 GTL-DX with silver faceplate (By Dynascan)

SPECIFICATIONS

GENERAL
Type:Citizen band / "Freeband" / Export transceiver
Frequency range: 26.515-27.855 MHz in three bands
Low: 26.515-26.955 MHz
Mid: 26.965-27.405 MHz
High: 27.415-27.855 MHz
Channels/tuning steps:120 (3*40)
Mode:AM / FM / SSB / CW
Frequency control:PLL (Mk 1: MB8719. Mk 2: MC145106)
Frequency stability:0.001%
Power supply:11.7-15.9 VDC (3-pin connector)
Current drain/power consumption:RX: 300-700 mA
TX: Max 2.2 A
Antenna impedance/connector:50 ohm / SO-239
Dimensions (W*H*D):200*60*235 mm (7.88*2.38*9.25")
Weight:2.27 Kg (5 lb)
Other features: NB/ANL. SWR-meter. Tone hi-cut. Channel 9 switch.
Coarse clarifier: 7 KHz (RX/TX). Fine clarifier: 1 KHz (RX only)




RECEIVER SECTION
Receiver system: Single conversion superheterodyne (SSB/CW)
IF: 10.695 MHz
Double conversion superheterodyne (AM/FM)
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity: AM: 0.5 uV (10 dB S+N/N)
FM: 1 uV (20 dB S+N/N)
SSB/CW: 0.25 uV (10 dB S+N/N)
Selectivity: AM/FM: 6 KHz (-6 dB), 9 KHz (-50 dB)
SSB/CW: 2.1 KHz (-6 dB), 3.3 KHz (-60 dB)
Image rejection:65 dB
AF output power/speaker:4 W at ?% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power:AM/FM/CW: 5 W
SSB: 12 W (PEP)
Modulation system:AM: High and low level class B
FM: Variable capacitance
SSB: Balanced
FM deviation:? KHz
Spurious emissions:Less than -? dB
Microphone impedance/connector:? ohm / 4-pin (Metal locking ring connector)
Microphone input sensitivity:? mV




MISCELLANEOUS
Manufactured:Taiwan, 198x-199x (Discontinued)
Main PCB: Mk 1
PC-879AB by Uniden
Single-sided. Through-hole components
Mk 2
PB-010AA and AB by Uniden
Single-sided. Through-hole components
Sub PCBs: Mk 1
PC-880AA - Channel selector board
PC-881AA - LED display board
PC-958AA - SWR board
Mk 2
PC-266AA - Microphone jack board
PC-880AA - Channel selector board
PC-881AA - LED display board
PC-958AA - SWR board
Additional info: Mk1 serial numbers generally start with 03 while Mk2 serial
numbers generally start with 13.
See also the "Fake" version
Related documents: User manual (961 KB)
Service manual (22 MB)
MK 1 & 2 AF amp: TA7222P
Mk 1 & 2 RF driver: 2SC2166
Mk 1 RF final: 2SC1969
Mk 2 RF final: 2SC2312
Sams Photofact #:None
Modifications and fixes:
Reviews:
Options/Accessories:
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An inside picture of Cobra 148 GTL-DX Mk2 (By Dynascan)

A picture of Cobra 148 GTL-DX with black faceplate (By Dynascan)