Abell A720T, Service Manual

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A720T (VHF) Service Manual V1.0
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Wait till the “call tone” is finished(if you turned on “call tone” during programming), then start to speak.
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Release PTT key to listen/receive signal.
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If there is no speaking withing preset time, your speaking/call is over.
Receive and Call Back to Individual Call
Definition of Individual Call: one radio call another radio; there are two types of individual call: start radio
check/detect before call; start to call immediately.
Dealer can only program one of the two types individual call call into radio.
Steps:
When you received a individual call
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Indicator LED bright green
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Hold radio and place it 1 to 2 inch away from your month at vertical position. If you turned on “Channel Free”
function when programming, after the caller released PTT key, you will hear a short prompt tone, which means
this channel is free for you to call back.
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Press PTT key to speak. Indicator LED bright red.
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Wait till the “call tone” is finished(if you turned on “call tone” during programming), then start to speak.
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Release PTT key to receive signal/ listen.
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If there is no voice activities within preset time, this calling is over.
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You will hear a short tone.
Receive a ALL Call
Definition of ALL Call: one radio call all radio on the same channels.
Steps:
When you are receiving a ALL Call:
You’ll hear a prompt tone, indicator LED bright green.
If there is no voice activity within preset time, the ALL Call is over. If you turned on “Channel Free” function when
programming, after the caller released PTT key, you will hear a short prompt tone, which means this channel is free
for you to use, but you cannot call back to a ALL call.
Note: When receiving ALL call, radio will stop receiving all call if you switch to other channel. No pre-programmed
function key can be used during the all call
Speak/Call
Your can use following methods to select a channel, radio ID or group ID:
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Channel Knob
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Pre-programmed making call key
Make Call by Channel Knob
Make Group Call
Your radios must be pre-programmed belong to this group if you want to make call to this group.
Steps:
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Switch channel knob, use activated group ID to select channel.

Hold radio and place it 1 to 2 inch away from your month at vertical position.

Press PTT key to make call/speak, indicator LED bright red.
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Wait till the “call tone” is finished(if you turned on “call tone” during programming), then start to speak.