Cobra 148 GTL

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Back by popular demand - The Original 148 GTL!

The Original 148 GTL is back...and better than ever! Professional driver-requested improvements include a front panel microphone connector for convenient in-dash installation, 9 foot microphone cord for easy reach anywhere within the cab, and tactile controls for added convenience and safety when adjusting functions.

Features

12 Watts SSB RF Power Output

12 watts RF power increases range capabilities with SSB operation.
4 watts (maximum FCC allowable) AM RF power output.

Front Pin Mic

Designed to maximize space in the compact environment of today's vehicles. The 4-pin front panel mic connector allows the 148 GTL to be installed above, in, or under dash conveniently and easily.

Dual Conversion AM Receiver

High quality transceiver designed to maximize frequency response and image/spurious rejection.

Tactile Controls

Allows you to actually feel where the dial is in it's rotation without taking your eyes off the road.

Additional Features:

Illuminated S/SWR/RF Meter
Switch--able Noise Blanker
Switch-able Noise Limiter
RF Gain Control
VoiceLock
SWR Control Calibration
Dynamike Control
Instant Channel 9
CB/PA Switch
3 Position Dim Switch

*Optional Accessories*
	Tune-up. (perform a tune-up to radio to increase power, audio and performance) AM carrier 5 watts and 30 watts peak power.	$25
	RFX-150 Final. (perform a tune-up to the radio. Increase power, audio and performance and a completely new final section consisting of even higher power MOSFETs) AM carrier 35 watts and 100+ watts peak power.	$165
	Tune-up and frequency conversion. (Modified for expanded frequency coverage / more channels)	$75
	Add a "Slider" option to your frequency conversion (Modified the Clarifier for ability to control frequency, requires complete frequency realignment)	$15
	Add a "Power" control or Watt knob (Modified to have variable AM power with a control placed in the rear)	$25
	Perform Receiver improvement mods. (These mods replace key RX parts for better sensitivity and lower noise)	$28
	Turner RK-56 Noise Canceling microphone. (wired for this radio with a 4 pin plug)	$55
	Astatic 636L Noise Canceling microphone. (wired for this radio with a 4 pin plug)	$29
	Astatic D104-M6b Amplified microphone. (wired for this radio with a four pin plug and a battery installed)	$56
	DM-452 Echo Amplified microphone (wired for this radio with a 4 pin plug)	$32
	Install an Echo board. (wired internal to the radio with dual controls on the outside to control speed and echo effects)	$60
	Install a Roger Beep tone board. (wired inside the radio with a switch for on/off)	$50
	Install a Roger Fart board. (wired inside the radio with a switch for on/off)	$50
	Install a Noise toy (wired inside the radio with a switch or pushbutton to trigger any 18 second sound byte you want)	$60
	Install a Noise toy as a background theme music (wired inside the radio with a switch to play any background music at very low volume so you can talk over it.)	$60
	Install Talkback (wired inside the radio so that when you talk you can hear yourself)	$10
	Add a Small External Speaker (plugs into back of the radio for improved sound)	$12
	Add a Large External Speaker (plugs into back of the radio for improved sound)	$18

GENERAL
Channels	40 AM, 40 LSB, 40 USB.
Frequency Range	26.965 to 27.405 MHz.
Frequency Control	Phase Lock Loop (PLL) synthesizer.
Frequency Tolerance	0.005%.
Frequency Stability	0.001%.
Operating Temperature Range	-22° F to +122° F (-30° C to +50° C).
Microphone	Plug-in dynamic; with push-to-talk switch and coiled cord.
Input Voltage	13.8V DC nominal, 15.9V max., 11.7V min. (positive or negative ground).
Current Drain Transmit:	AM full mod., 2.2A. SSB 12 watts PEP output, 2A.
Current Drain Receive:	Squelched, 0.25A Maximum audio output, 0.6A.
Size	2 3/8”(H) x 7 7/8”(W) x 9 1/4”(D).
	(6 cm (H) x 20 cm (W) x 23.5 cm (D)).
Weight	5 lbs. (2.27 kg).
Antenna Conductor	UHF, S0239 www.bellscb.com
Semiconductors	3 field effect transistors, 45 transistors, 63 diodes, 6 integrated circuits, 1 two color light emitting diode.
Meter	(3-in-1) Illuminated; indicates relative output power, received signal strength, and SWR.
TRANSMITTER
Power Output	AM, 4 watts. SSB, 12 watts, PEP.
Modulation	High-and low-level Class B, Amplitude Modulation.
Intermodulation Distortion	SSB: 3rd order, more than -25 dB. 5th order, more than -35 dB.
SSB Carrier Suppression	55 dB.
Unwanted Sideband	50 dB.
Frequency Response	AM and SSB; 300 to 2500 Hz.
Output Impedance	50 ohms, unbalanced.
Output Indicators	Meter shows relative RF output power and SWR. Transmit LED glows red when transmitter is in operation.
RECEIVER
Sensitivity	SSB: 0.25 µV for 10dB (S+N)/N at greater than 1/2-watt of audio output. AM: 0.5 µV for 10 dB (S+N)/ at greater than 1/2- watt of audio output.
Selectivity	AM: 6dB @ 3 KHz, 50 dB @ 9 KHz. SSB: 6 dB @ 1.1 KHz, 60 dB @ 2.3 KHz.
Image Rejection	More than 65 dB.
IF Frequency	AM: 7.8 MHz 1st IF, 455 KHz 2nd IF. SSB: 7.8 MHz.
Adjacent-Channel Rejection	60 dB AM & 70 dB SSB.
AM and SSB RF Gain Control	40 dB adjustable for optimum signal reception.
Automatic Gain Control (AGC)	Less than 10 dB change in audio output for inputs from 10 to 100,000 microvolts.
Squelch	Adjustable; threshold less than 0.25 µV.
ANL	Switchable.
Noise Blanker	RF type, effective on AM and SSB.
Voice Lock Range	±2.5 KHz.
Audio Output Power	4 watts into 8 ohms.
Frequency Response	300 to 2500 Hz.
Built-in Speaker	4 ohms, round.
External Speaker (Not Supplied)	8 ohms; disables internal speaker when connected.
PA Power Output	4 watts into external speaker. External Speaker for PA 8 ohms.