Autopatch Operations - Kenwood TH-28A Instruction Manual

7 Autopatch Operations
30
(U.S.A. versions only)
Some repeaters offer a service called autopatch.
This feature allows you to dial a telephone number
from your transceiver and carry on a telephone
conversation.
This function requires the use of a DTMF (Dual Tone
Multi Frequency) keypad. The transceiver also
provides four additional keys - A, B, C, and D - in
addition to the normal 12 keys found on your
telephone.
These keys are required for various control
operations by some repeater systems. A chart listing
the various tone frequencies generated by the
keypad is provided below.
Hz | 1209| 1336] 1477| 1633 key | Hz | key | Hz
697| 1 2/3 IA 1 | 697] 5 |1209
770| 4 | 5 | 6 |B(M) 2 |770| 6 |1336
852| 7 | 8 | 9 |C(MHz) 3 | 852 7 1473
941| * | o | # |D(«Low 4 |941 | 8 |1633
To activate the keypad:
Press and hold the PTT switch
Dial the number just as you would on a normal
telephone by pressing the appropriate keys.
Note
| Some repeaters require a special key sequence to
activate the autopatch function. Check with the
| control operator for this sequence.
You will hear and transmit a single tone if you press
the VFO key before pressing one of the numeric
keys (see the chart at left).
Selecting Delay Time
(Direct keyboard entry only)
It's easier to enter a long string of numbers if you
don't have to hold down the PTT switch while you
enter them. To instruct the transceiver to remain
keyed for 2 seconds after pressing each number:
Turn the power off.
Press and hold the 3 key and turn on the power.
You are now able to enter numbers without pressing
and holding the PTT switch.
Repeat 1 and 2 to cancel the delay time.