Cobra Electronics 19 DX II manual Introduction, Specifications, Frequency Range

Introduction

Frequency Range

Your COBRA CB radio provides high-level, trouble-free performance over the following frequency assignments:

Channel	Channel Frequency	Channel	Channel Frequency
	in MHz		in MHz
1	26.965	21	27.215
2	26.975	22	27.225
3	26.985	23	27.255
4	27.005	24	27.235
5	27.015	25	27.245
6	27.025	26	27.265
7	27.035	27	27.275
8	27.055	28	27.285
9	27.065	29	27.295
10	27.075	30	27.305
11	27.085	31	27.315
12	27.105	32	27.325
13	27.115	33	27.335
14	27.125	34	27.345
15	27.135	35	27.355
16	27.155	36	27.365
17	27.165	37	27.375
18	27.175	38	27.385
19	27.185	39	27.395
20	27.205	40	27.405

These frequencies are generated and accurately controlled by a phase lock hoop (PLL) circuit, comprised of the latest state-of-the-art integrated circuit technology, ensuring high reliability and excellent frequency stability on the above channels.

To obtain maximum performance please read carefully the descriptions and operating instructions in this manual.

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Specifications
GENERAL
Channels	40.
Frequency Range	26.965 to 27.405 MHz.
Frequency Control	Phase-Locked Loop (PLL) synthesizer.
Frequency Tolerance	0.005%.
Operating Temp. Range	-22°F to +122°F (-30°C to +50°C).
Microphone	Plug-in type; Electret condenser.
Input Voltage	13.8V DC nom. (negative ground).
Current Drain	Transmit: AM full mod., 1.5A (maximum).
	Receive: (Squelched, 0.115A, full audio
	output 1.0A (nominal).
Size	6-5/8”D x 4-9/16”W x 1-13/16”H
	(165mm x 116 mm x 44 mm.)
Weight	3 lbs., 4 oz. (1.0 kg.).
Antenna Connector	UHF, SO-239.
Semiconductors	22 transistors, 17 diodes, 3 integrated
	circuits, 7 LEDs.
Meter	Indicates relative power output and
	received signal strength.
TRANSMITTER
Power Output	4 watts.
Modulation	High- and low-level Class B amplitude.
Frequency	300 to 3000 Hz.
Output Impedance	50 ohms, unbalanced.
Output Protection	Output transistors protected against
	mismatch up to 20:1.
RECEIVER
Sensitivity	Less than 1µV for 10dB(S + N)/N.
Selectivity	6 dB @ 7 KHz, 55dB @ 15 KHz.
Image Rejection	60 dB typical.
Adjacent CH. Rejection	50 dB, typical.
IF Frequencies	Double conversion, 1st:	10.695 MHz.
	2nd:	455 KHz.
Automatic Gain Control	Less than 10dB change in audio output for
(AGC)	inputs from 10 to 50,000µV.
Squelch	Adjustable; threshold less than 1µV.
Audio Output Power	3 watts.
Frequency Response	300-3000 Hz.
Distortion	Less than 10% @ 3 watts @ 1000 Hz.
Built-in Speaker	8 ohms, round.
External Speaker	8 ohms; disables internal speaker when
(Not Supplied)	connected.
PA SYSTEM
Power Output	4 watts into external speaker.
External Speaker for PA	8 ohms; a separate jack is provided.

(Not Supplied)

(Specifications subject to change without notice.)

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