User's Manual

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GMRS480 – User Instruction Guide – Content Draft

TriSquare Communications Version 0 (4/18/01) Page 7

USING THE WEATHER RADIO

Your GMRS480 radio can receive weather broadcasts from the

NOAA National Weather Service. While using the Weather Radio, you are

not able to receive GMRS communications unless you press the PTT or

Call buttons which will immediately exit and return to GMRS Radio Mode.

To turn on the Weather Radio, press the

button.

Choosing a Weather Channel

There are 7 NOAA channel frequencies available and these frequencies are

common between the US and Canada. You will need to know what

frequency is being transmitted in your location.

Press the

Down

button to increment or decrement the channel

number displayed. The Auto Squelch feature is never active in Weather

Radio Mode.

To exit the Weather Radio and return to the GMRS Radio, press the

button.

NOAA Weather Radio Frequency List

Channel 1 162.550 Mhz

Channel 2 162.400 Mhz

Channel 3 162.475 Mhz

Channel 4 162.425 Mhz

Channel 5 162.450 Mhz

Channel 6 162.500 Mhz

Channel 7 162.525 Mhz

SPECIFICATIONS

Description

Channels 15 GMRS, 7 Weather

CTCSS Codes 38 Sub-Audible Tones

Operating Frequency UHF 462.550-462.725 MHz

VHF 162.400-162.550 MHz

Power Source 6V NiMH Battery Pack

or 4 AA Alkaline Batteries

Output Power 2W Conducted

Battery Life 10 Hours - NiMH Battery Pack

(5/5/90 duty cycle) 35 Hours – Alkaline Batteries

Channel Frequency Chart (Mhz)

Channel Frequency Channel Frequency

1 462.5625 8 462.5750

2 462.5875 9 462.6250

3 462.6125 10 462.6750

4 462.6375 11 462.5500

5 462.6625 12 462.6000

6 462.6875 13 462.6500

7 462.7125 14 462.7000

15 462.7250

CTCSS Chart (Hz)

Code Frequency (Hz) Code Frequency (Hz) Code Frequency (Hz)

0 Disabled 13 103.5 26 162.2

1 67.0 14 107.2 27 167.9

2 71.9 15 110.9 28 173.8

3 74.4 16 114.8 29 179.9

4 77.0 17 118.8 30 186.2

5 79.7 18 123.0 31 192.8

6 82.5 19 127.3 32 203.5

7 85.4 20 131.8 33 210.7

8 88.5 21 136.5 34 218.1

9 91.5 22 141.3 35 225.7

10 94.8 23 146.2 36 233.6

11 97.4 24 151.4 37 241.8

12 100.0 25 156.7 38 250.3