UHF RADIOS
Technical Requirements for UHF CB Radios All alpineSAR members must have a radio
The following are the requirements for a BSAR-compatible UHF CB Radio:
- Access to all 38 UHF voice channels with the capability to use repeater channels as required
- Simple and intuitive to use
- Must allow use of AA batteries, for the following reasons:
- AA cells are readily available at supermarkets and storesmost GPSs use AA cells hence only one type of battery need be carried
- BSAR already maintains a supply of AA batteries
- they are less likely to require changeover in the field due to their capacity
- others in your group and adjacent groups will also have AA cells
- either high capacity alkaline cells (preferred) or high capacity rechargeable nickel metal hydride cells can be used. Nicads are not recommended
- AA cells last significantly longer that AAA cells, especially in the very cold condition
- A key lock function so the radio does not accidentally change channel when bumped or in your pocket
At least 1.5 watt power output - less than this limits transmit coverage in difficult terrain
A physical ON/OFF switch, normally associated with the volume control. Some radios have an electronic ON/OFF switch that drains the batteries over an extended period of time
The radio should be readily available from electronics stores and not be a one-off special
A stout wrist strap and belt clip
A minimum of 24 hours of receive-only operation
Speaker/mike
Other desirable features should include:
- Availability of CTCSS tone functionality to reduce unwanted traffic
- Waterproof
- Battery save functionality – radio listens for a short time and if no activity goes to sleep for a short time
Features not required for BSAR use include:
- Rechargeable batteries and desktop chargers
- Power output of 5w. This draws excessive power on transmit, reduces battery life and often results in a physically larger radio
- Voice activation for transmission (VOX) as VOX activates automatically in high winds and blocks the channel to anyone else
Rik Head |