Kenwood TR-851A Instruction Manual page 23

4-6-3. Tone frequency
A. With the TR-851A/751A
The TONE switch turns on and off the subaudible
tone encoder for repeater control. Use this function
with the optional programmable tone unit TU-7. Any
of 38 tone frequencies may be selected by rotating
the TUNING knob on the front panel. The tone
ON/OFF condition and the selected tone frequency
can be stored separately in VFO A or VFO 8B, the
COM channel or memory channels O through 9.
Available CTCSS tone frequencies
{ 7
\ Hz Hz Hz
67.0 114.8 192.8
71.9 118.8 203.5
74.4 123.0 210.7
77.0 127.3 218.1
79.7 131.8 225.7
82.5 136.5 233.6
85.4 141.3 241.8
88.5 146.2 | 250.3
| 91.5 151.4
94.8 156.7
97.4 162.2
100.0 167.9'!
103.5 173.8
107.2 179.9
110.9 186.2
Operation
1. Tuming the tone ON/OFF
Press the FUNC switch then the TONE switch;
the T indicator lights indicating that the tone is
ON.
Press the FUNC and TONE switches again, and
the T indicator goes OFF, indicating that the tone
is OFF.
2. Selecting a tone frequency
Press the FUNC switch then hold the TONE key
down for more than 0.5 seconds; the tone fre-
quency will be displayed. Select the desired fre-
quency by rotating the TUNING knob (or with
the microphone UP/DWN switch). When FUNC
key is pressed, the display returns to the original
operating frequency.
{a) Selecting the audible tone frequency (With the
optional TU-7 installed)
Key operation
. Press FUNC key.
2. Press TONE key for
more than 0.5
seconds.
About 0.5
seconds after
T tight ON,
tone frequen-
cy will be
displayed.
FUNC fight
OFF.
. Release TONE key.
| Setecting - Tum TUNING knob | 38 frequencies
| tone fre- right or left. {Or are scrolled.
quency operate microphone
UP/DWN switch)
5. Press FUNC key.
Return to
I frequency
| display
Notes —— es
When tone display is returns to the normal display,
the T indicator always will be ON and the tone
feature enabled.
The original
feoquency is
displayed,
T light ON.
| 1 beep
(b) TONE ON/OFF operation
Koy operation
1. Press FUNC key.
2. Press TONE key.
TONE ON T light ON
FUNC light OFF
FUNC light ON |1 beep
abe suabetcon
T light OFF — {1 beep
FUNC light OFF
1. Press FUNC key.
TONE OFF | 2. Press TONE key.
B. With the TR-851E/751E European version
The TONE switch turns the 1750 Hz single tone for
repeater control ON or OFF.
Operation
When you hold the TONE switch down, the unit is in
the send mode and the tone is modulated; the ON
AIR and T indicators are ON.
C. With the TR-851E/751E U.K. version
The TONE switch turns the tone burst for repeater
control ON or OFF.
Operation
Press the TONE switch; the T indicator lights. The
1750 Hz tone signal is sent for approximately 1
second.
23