16

FREQUENCY RANGE

The COBRA HH33 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 as shown below.

CB

Channel Freq.

CB

Channel 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

 

 

 

 

17

HH-33 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 + 65° C

MICROPHONE

ELECTRET, PUSH-TO-TALK

INPUT VOLTAGE

12V VDC, INTERNAL BATTERIES

 

13.8 VDC, EXTERNAL

ANTENNA CONNECTOR

TYPE BNC

TRANSMITTER

 

POWER OUTPUT

3.5 W AT 12 VDC - HIGH, 1.0 W IN LOW

4.0W AT 13.8 VDC - HIGH, 1.0 IN LOW

MODULATIONAM

FREQUENCY RESPONSE

300 - 3000 HZ AT -6 DB

OUTPUT IMPEDANCE

50 OHMS, UNBALANCED

RECEIVER

 

CB

 

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)

Page 9
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Cobra Electronics HH 33 operating instructions Frequency Range, HH-33 Specifications

HH 33 specifications

Cobra Electronics HH 33 is a rugged and reliable handheld VHF marine radio designed for boating enthusiasts, commercial fishermen, and marine professionals. Its compact size and lightweight design make it a convenient choice for users looking for portability without sacrificing performance. This handheld radio stands out for its exceptional range, robust features, and built-in technologies that enhance communication and safety on the water.

One of the standout features of the HH 33 is the inclusion of both NOAA Weather channels and alerts. This functionality allows users to stay informed about weather conditions, providing vital information that can affect boating plans or safety. The radio automatically switches to the local NOAA weather channel, ensuring that mariners are always apprised of real-time weather updates and emergency alerts.

With 6 watts of output power, the HH 33 boasts an impressive transmission range, effectively allowing communication over considerable distances. This power is particularly beneficial in emergency situations, where reliable communication can be critical. The radio comes equipped with a high-performance antenna, enhancing its overall signal clarity and reach.

The Cobra HH 33 showcases a user-friendly design, featuring a large, backlit LCD display that ensures visibility even in low-light conditions. The intuitive button layout enhances usability, allowing quick access to essential functions like channel selection, squelch control, and volume adjustment. Additionally, the radio features a built-in rechargeable battery that extends operational time, making it an efficient choice for long trips.

Another notable characteristic of the HH 33 is its ability to operate in various marine communication modes, including Dual Watch and Tri-Watch functions. These features enable users to monitor multiple communications simultaneously, ensuring that important messages are never missed. The radio is also buoyant, meaning if dropped overboard, it will float, making retrieval easier.

Moreover, with its robust casing and IPX7 waterproof rating, the Cobra HH 33 is designed to withstand harsh marine environments. This durability ensures that the device can endure splashes, rain, and even brief submersion, providing peace of mind for users in unpredictable weather conditions.

In summary, the Cobra Electronics HH 33 is a well-rounded handheld VHF marine radio that combines portability, advanced features, and reliability. With its exceptional range, NOAA alerts, user-friendly design, and rugged construction, it is an invaluable tool for anyone taking to the waters. Whether for leisure or professional purposes, the HH 33 is equipped to enhance communication and safety on any maritime adventure.