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in Europe a 1750 Hz tone is used in transmit.
Press and
hold the TONE key to transmit the access tone, then press
the PTT switch.
In the United Kingdom a 1750 Hz tone burst at the beginn-
ing of each transmission is used. Press the Tone key.
@ Tone Activation (TM-621A/721A)
To activate the TONE function depress the TONE key.
The T indicator will appear in the display to signify the tone
has been activated. To turn the tone OFF press the TONE
key again.
1. Press the F key and then
67.0 Hz | 107.2 Hz | 167.9 He
82.5 Hz | 127.3 Hz | 203.5 He
played.
85.4 He | 131.8 He | 210.7 He
2. Rotate the MAIN Tun-
88.5 Hz | 136.5 He | 218.1 He
ing control or press the
{_91.5He | 141.3Hz | 225.7 He
:
94.8 He | 146.2 Hr | 233.6 He
Microphone
UP/DWN
[797-4 ti] 151.4He | 261.8 He
switches
until
the
100.0 Hz | 156.7 Hz | 250.3 Hz
desired tone frequency
{103.5 Hz | 162.2 Hz
i
i
Note: 97.4 Hz is available only
appears in the display.
Yor encode:
3. To turn to the normal frequency display, press the
TONE key, any one of the keys, or Microphone PTT
switch.
Or
automatically
release
return
after
5
seconds of the selection.
4-4-4. AUTOPATCH (U.S.A. version only)
Some repeaters offer a service known as autopatch. This
allows
you to dial a telephone
number
from
your
transceiver and carry out a telephone conversation,
much
like a car telephone, or cellular telephone. This function re-
quires the use of a DTMF (Dual Tone Multi Frequency) pad.
In addition to the normal
12 keys that are found on your
telephone the MC-48B
microphone also provides 4 addi-
tional keys, A, B, C, and D. These keys are required by
some repeater systems for various control functions.
You
should check with the control operator of your repeater to
determine if their use is required. A chart is provided that
lists the tones that are generated when you press each key.
1. To activate the DTMF
pad, press and hold the PTT
switch,
2. Now press the keys just as you would dial a telephone.
3. The transceiver will remain keyed for about 2 seconds
after you press each number, so you can release the PTT
switch without unkeying the transceiver.
Note: —————--_
of
keys
to
activate
the
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check
with
the
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control
operator
of your
repeater
for this se-
s2 | 7 | 8
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