Frequency Ranges, HH 37 ST Specifications

37st manual layout.5 10/1/98 9:56 AM Page 26

Frequency Ranges

The COBRA HH37 ST transceiver represents one of the most advanced AM two-way radios used as a Class D station in the Citizens Radio Service. This unit features advanced Phase Lock Loop (PLL) circuitry providing complete coverage of all 40 CB channels.

	Channel		Channel
CB	Freq.	CB	Freq.
Channel	In MHz	Channel	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

HH37 ST Specifications

GENERAL

CHANNELS . . . . . . . . . . . . . . . . . . CB - 40 CH

FREQUENCY RANGE. . . . . . . . . . CB - 26.965 TO 27.405 MHZ FREQUENCY TOLERANCE . . . . . 0.005 %

FREQUENCY CONTROL . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER OPERATING TEMPERATURE

RANGE. . . . . . . . . . . . . . . . . . . . . . -30° C TO + 50° C MICROPHONE. . . . . . . . . . . . . . . . ELECTRET, PUSH-TO-TALK INPUT VOLTAGE . . . . . . . . . . . . . 13.0V DC,INTERNAL BATTERIES

13.8 VDC,EXTERNAL

ANTENNA CONNECTOR. . . . . . . TYPE BNC

TRANSMITTER

POWER OUTPUT . . . . . . . . . . . . . 3.5 W AT 12 VDC - HIGH,0.8 W IN LOW

4.0W AT 13.8 VDC - HIGH,1.0 IN LOW

MODULATION . . . . . . . . . . . . . . . AM

FREQUENCY RESPONSE. . . . . . . 300 - 3000 HZ AT -6 DB

OUTPUT IMPEDANCE. . . . . . . . . 50 OHMS,UNBALANCED

RECEIVER

SENSITIVITY. . . . . . . . . . . . . . . . . . LESS THAN 1 uV FOR 10 DB S/N

IF FREQUENCY. . . . . . . . . . . . . . . DUAL CONVERSION

1 ST - 10.690 MHZ,2ND - 455 KHZ

AUDIO OUTPUT. . . . . . . . . . . . . . 500 mW MAXIMUM AT 10 % DISTORTION

FREQUENCY RESPONSE. . . . . . . 300 - 3000 HZ AT -6 DB

2ND IF IMAGE REJECTION. . . . . GREATER THAN 60 DB ADJACENT CH.REJECTION. . . . 50 DB MIN.

AUTOMATIC NOISE LIMITER. . . BUILT- IN

FREQUENCY CONTROL . . . . . . . PLL (PHASE LOCK LOOP)

MAX.SIGNAL TO NOISE RATIO . 58 DB WITH ST ON

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 DB WITH ST OFF