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Tone Calling
Tone calling enables you to selectively call other radios.
To do this, the SELCALL ID of the radio you are going to
call should be in the Transmitters SELCALL ID memory
(please see Programming Method on page 28).
To Call:
1. Select the channel where you and your group agreed to
use for Selective Calling.
2. Press and hold the @ Key for about 1.5 seconds.
One Long Beep will be heard and CAL indicator will
appear on the LCD Display while the SELCALL ID is
being transmitted automatically.
An acknowledge tone coming from the called radio will be
received if you had successfully made contact.
The Acknowledge Tone for the Sundowner UH-057 is a
successive three Low Tone beeps.
Group Calling
Sundowner UH-057 has group calling capability. It can
either respond to a group call or transmit a Group Calling
Code.
Group Calling enables you to call members of your group
simultaneously. However, you need to follow a certain
format on programming your TX SELCALL ID to do this.
TX SELCALL ID Format
To call
Transmitter SELCALL ID
10 radios
100 rad ios
1000 radios
10000 radios
[x] [x] [x] [x] [A]
[x] [x] [x] [A] [A]
[x] [x] [A] [A] [A]
[x] [A] [A] [A] [A]
Page 25
UH-O57
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