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RADIOS BB OUTDOORS COURSE 2006. PART 1 CB RADIOS.

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Presentation on theme: "RADIOS BB OUTDOORS COURSE 2006. PART 1 CB RADIOS."— Presentation transcript:

1 RADIOS BB OUTDOORS COURSE 2006

2 PART 1 CB RADIOS

3 Why talk about radio’s Useful for when others are out of site, and for emergency situations. Mobile Phones often won’t work in the bush Just about everything these days uses radio waves, so it’s good to know something about them. For example Televisions AM/FM radios, CB’s, remote control cars, GPS systems, mobile phones, garage remotes, etc all use work with radio waves

4 SOME RADIO’S HAND HELD CB RADIO UHF VECHICLE CB RADIO UHF MILITARY MANPACK VHF RADIO 4WD WITH LONG DISTANCE HF RADIO

5 CB RADIOS CB stands for Citizens Band. These are a common two way radio anyone can get their hands on. You can’t just use any frequency for any purpose. Different frequencies are set aside for different uses. CB’S can be Hand held, or mounted in vehicles or buildings. There are two main types of CB 27MHZ and 477 MHZ CB’s are often used by truck drivers, or on construction or work sites, in vehicles by 4WDers, by trail bike riders, hikers, farmers etc…

6 Hand held and vehicle mounted Hand held CB Vehicle mount CB and antennas, common in 4WD’s trucks etc

7 Types of CB Radio in Australia 27 MHZ (HF) – Generally longer range, larger antennas, less features. (‘old’ type) 477 MHZ (UHF)– Clearer, line of sight, shorter range, more compact size, more features. MOST COMMON (‘new’ type)

8 RANGE 27 MHZ - up to about 30km 477 MHZ Km. Handheld units up to 5km. These figures will vary depending on particular situation

9 Channel usage in Australia 27 MHZ CB’s CHANNELMHZUSE FOR Conversation Conversation Conversation Conversation Conversation Conversation Conversation Road EMERGENCY Conversation Call Conversation Conversation Conversation Conversation Call Conversation Conversation Conversation You can’t use just any channel for any usage here are the rules Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation Conversation

10 CHANNELMHZUSE Repeaters Repeaters Repeaters Repeaters Repeaters/EMERGENCY Repeaters Repeaters Repeaters Conversations Conversations Calling Conversations Conversations Conversations Conversations Conversations Conversations Conversations Conversations Conversations Conversations DATA ONLY DATA ONLY 24477Conversations Conversations Conversations Conversations Conversations Conversations Conversations Repeaters Repeaters Repeaters Repeaters Repeaters/EMERGENCY Repeaters Repeaters Repeaters Conversations Highway/Road 477 MHZ UHF Designated channel usage

11 Only use EMERGENCY channels for EMERGENCIES! When in range of repeaters, only use repeater channels as repeaters Use Call channel to establish initial communications, then move to another channel DATA channels only for data, no voice Channel usage in Australia

12 Using a CB Before you leave Do a Radio Check, call each other to check it is all working. Choose a channel to use, make sure everyone knows which one. Choose the correct channels for conversations and Emergency. Check Radio condition and batteries. Having trouble communicating? Use a higher power setting. Go to the top of a hill or raise your antenna higher. Speak clearly and slowly if necessary. Try moving closer to the other person. You will may get better comm’s over large areas of water and flat or wet ground than dry ground or forests. Do not waste batteries, but in an emergency don’t stop trying either. Look after your radio and it’s antenna. It could be your best lifeline in an emergency.

13 Using a CB Communicating 27MHz CB’s generally have better range than 477MHz CB’s but are not as clear (due to the lower frequency). Don’t interrupt in the middle of conversations, it gets very confusing. Please don’t fill the air waves with immature crap. Note For long distance outback travel you would use a HF radio or Satellite phone. CB radio range is too short.


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