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Last modified 2024-11-04

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Cobra 148 GTL-DX

A picture of Cobra 148 GTL-DX with silver faceplate

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% @ -30 to +50°C (-22 to +122°F)
Clarifier or Delta tune:Coarse (RX/TX): ±7 KHz
Fine (RX): ±1 Hz
Power supply:11.7-15.9 VDC (Male 3-pin jack)
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.




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)
Squelch sensitivity:Less than 0.5 uV (Treshold)
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:TS "Minijack" (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
Max FM deviation (Factory set):±? KHz
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / 4-pin (Male locking ring jack)
Microphone input level:? 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. A small batch of late Mk1
serial numbers also start with 13.
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
Market / Approval: Export
No known approvals
Sams Photofact #:None
Modifications and fixes:
Reviews:
Options / Accessories:
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An inside picture of Cobra 148 GTL-DX Mk2

A picture of Cobra 148 GTL-DX with black faceplate
A rear picture of Cobra 148 GTL-DX