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Last modified 2022-04-12

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Cobra 1000 GTL (By Dynascan)

A picture of Cobra 1000 GTL (By Dynascan)


Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz
Channels / tuning steps:40
Frequency control:PLL (uPD2816)
Frequency stability:?%
Clarifier or Delta tune:1.5 KHz
Power supply:Mains: 120 VAC (Fixed power cord)
or 13.8 VDC (3-pin connector)
Current drain / power consumption:RX: 0.4-1 A @ 13.8 VDC
TX: 2 A @ 13.8 VDC
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):381*146*340 mm (15*5.75*13.38")
Weight:4.54 Kg (10 lb)
Other features:PA. ANL/NB. Tone control. Alarm clock. SWR meter.

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:80 dB
AF output power / speaker:3 W at 7% distortion / External only
External speaker connector:Two 3.5 mm, 8 ohm

RF output power:4 W
Modulation system:High and low-level class B amplitude modulation
FM deviation (Factory set):No FM
Spurious emissions:Better than -? dB
Microphone impedance / connector:600 ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV

Manufactured:Taiwan, 1978-19xx (Discontinued)
Main PCB:PC-407AB by Uniden
Sub PCBs: PC-300AA - Alarm board
PC-301AA - Switches board
PC-311AA - Headphone jack board
PC-367AA - LED channel display
PC-399AA - Speaker jack board
PC-400AA - Clock board
PC-403AA - Channel selector board
PC-408AA - Mike jack board
PC-410AB - Power supply board
Additional info:
Related documents: User manual (5.9 MB)
Schematic diagram (1.1 MB)
BOM (2 MB)
PLL: uPD2816
AF amplifier: TA7222
RF driver: 2SC2028
RF final: 2SC2029
Sams Photofact #:CB-235 (November 1978)
Modifications and fixes:
Options / Accessories:
CA-2000 Optional speaker