Kenwood TH-D72A User manual

REPEATER – 1
REPEATER ACCESS
Most repeaters use a receive and transmit frequency pair
with a standard or
non-standard offset (odd-split). In addition, some
repeaters must receive a tone from the transceiver in
order to gain access to the repeater. For details, consult
your local repeater reference.
■Selecting an Offset Direction
The offset direction allows your transmit frequency to
be higher (+) or lower (–) than the receive frequency.
1Select your desired band (A or B).
2Press [F], [MHz] to select an offset direction.
• Each time you press [F], [MHz], the offset direction
changes as follows:
Simplex operation
➡+ ➡– ➡Simplex operation
• If you are using a TH-D72E, when operating on
the 430 MHz band, the offset direction changes as
follows:
Simplex operation
➡+ ➡– ➡= (–7.6 MHz) ➡
Simplex operation
If the offset transmit frequency falls outside the
allowable range, transmitting is inhibited. Use one of
the following methods to bring the transmit frequency
within the band limits:
• Move the receive frequency further inside the band.
• Change the offset direction.
Note: While using an odd-split memory channel or transmitting,
you cannot change the offset direction.
OPERATING THROUGH REPEATERS
■Selecting an Offset Frequency
The offset frequency is the value which the transmit
frequency will be offset from the receive frequency.
The default offset frequency on the 144 MHz band
is 600 kHz for all type versions. The default on the
430/440 MHz band is 5 MHz.
1Select your desired band (A or B).
2Enter Menu mode and access Menu 160.
3Set the appropriate offset frequency value.
• The selectable range is from 00.00 MHz to 29.95
MHz, in steps of 50 kHz.
Note: After changing the offset frequency, the new offset
frequency will also be used by Automatic Repeater Offset.
■Activating the Tone Function
To turn the Tone function on:
1Select your desired band (A or B).
2Press [TONE] to turn the Tone function On.
• Each time you press [TONE], the selection changes
as follows:
Tone ( ) ➡CTCSS ( ) ➡DCS ( ) ➡Cross
Tone ( : default) ➡Off (no display).
<Additionally, when APRS is ON and Voice Alert is
configured, Voice Alert ON is added to the above
cycle.>
• The “ ” icon appears on the display when the tone
function is On.
Repeaters are often installed and maintained by radio clubs, sometimes with the cooperation of local businesses involved
in the communications industry.
Compared to simplex communication, you can usually
transmit over much greater distances by using a
repeater. Repeaters are typically located on mountain
tops or other elevated locations. They generally operate
at higher ERP (Effective Radiated Power) than a typical
station. This combination of elevation and high ERP
allows communications over considerable distances.
TX: 144.725 MHz
TX tone: 88.5 Hz
RX: 145.325 MHz
TX: 144.725 MHz
TX tone: 88.5 Hz
RX: 145.325 MHz

REPEATER – 2
■Selecting a Tone Frequency
To select the tone frequency required to access your
desired repeater:
1Turn the Tone function On.
2Press [F], [TONE].
• The current Tone frequency appears on the display
and blinks. The default frequency is 88.5 Hz.
3Press [ ]/[ ] or rotate the Tuning control to select
your desired frequency.
• To exit the tone frequency selection, press [ESC ].
4Press [ OK] to set the selected frequency.
Note: If you have set up a Memory channel with a tone setting,
simply recall the Memory channel instead of setting up the tone
frequency every time.
No. Frequency
(Hz) No. Frequency (Hz) No. Frequency (Hz)
01 67.0 16 110.9 31 186.2
02 69.3 17 114.8 32 192.8
03 71.9 18 118.8 33 203.5
04 74.4 19 123.0 34 206.5
05 77.0 20 127.3 35 210.7
06 79.7 21 131.8 36 218.1
07 82.5 22 136.5 37 225.7
08 85.4 23 141.3 38 229.1
09 88.5 24 146.2 39 233.6
10 91.5 25 151.4 40 241.8
11 94.8 26 156.7 41 250.3
12 97.4 27 162.2 42 254.1
13 100.0 28 167.9
14 103.5 29 173.8
15 107.2 30 179.9
■Automatic Repeater Offset
This function automatically selects an offset direction
and activates the Tone function, according to the
frequency that you have selected. To obtain an up-
to-date band plan for repeater offset direction, contact
your national Amateur Radio association.
1Enter Menu mode and access Menu 161.
2Set the ARO to “On”.
3Press [A/B] to select the A band.
4Press [VFO] to select VFO mode.
5Press [ ]/[ ] or rotate the Tuning control to select
your desired frequency.
6Press [PTT] to start a call.
• You will be transmitting on an offset frequency value
determined from your offset setting value and an
offset direction depending on your selected frequency.
Refer to the settings below for offset directions:
TH-D72A:
Under 145.100 MHz: No offset
(Simplex operation)
145.100 ~ 145.499 MHz: – 600 kHz offset
145.500 ~ 145.599 MHz: No offset
(Simplex operation)
146.000 ~ 146.399 MHz: + 600 kHz offset
146.400 ~ 146.599 MHz: No offset
(Simplex operation)
146.600 ~ 146.999 MHz: – 600 kHz offset
147.000 ~ 147.399 MHz: + 600 kHz offset
147.400 ~ 147.599 MHz: No offset
(Simplex operation)
147.600 ~ 147.999 MHz: – 600 kHz offset
148.000 MHz and higher:No offset
(Simplex operation)
Under 442.000 MHz: No offset
(Simplex operation)
442.000 ~ 444.999 MHz: + 5 MHz offset
445.000 ~ 446.999 MHz: No offset
(Simplex operation)
447.000 ~ 449.999 MHz: – 5 MHz offset
450.000 MHz and higher:No offset
(Simplex operation)
TH-D72E:
Under 145.000 MHz: No offset
(Simplex operation)
145.600 ~ 145.799 MHz: – 600 KHz offset
145.800 MHz and higher:No offset
(Simplex operation))

REPEATER – 3
TRANSMITTING A 1750 Hz TONE
Most repeaters in Europe require that a transceiver
transmit a 1750 Hz tone. On a TH-D72E, simply pressing
[CALL] will transmit this tone. It is also possible to
program [1750] on the front panel as a [CALL] key for
transmitting the 1750 Hz tone.
1Enter Menu mode and access Menu 162.
2Set it to “1750Hz”.
Some repeaters in Europe must receive continuous
signals for a certain period of time, following a 1750 Hz
tone. This transceiver is also capable of remaining in the
transmit mode for 2 seconds after transmitting a 1750 Hz
tone.
1Enter Menu mode and access Menu 163.
2Set it to “On”.
Note: While remaining in the transmit mode, the transceiver does not
continuously transmit a 1750 Hz tone.
REVERSE FUNCTION
After setting a separate receive and transmit frequency,
you can exchange these frequencies using the Reverse
function. This allows you to manually check the strength
of signals you receive directly from other stations, while
using a repeater. If the station’s signal is strong, move to
a simplex frequency to continue the contact and free up
the repeater.
Press [REV] to turn the Reverse function On or Off
• When the Reverse function is On, the “ ” icon will appear on
the display.
Note:
◆If the transmit frequency is outside the allowable transmit
frequency range when using Reverse, pressing [PTT] will cause
an error tone to sound and transmission will be inhibited.
◆If the receive frequency is outside the receive frequency range
when using Reverse, an error tone will sound and Reverse will
not operate.
◆The ARO (Automatic Repeater Offset) will not function when
Reverse is ON.
◆You cannot switch Reverse On or Off while transmitting.
AUTOMATIC SIMPLEX CHECKER (ASC)
While using a repeater, ASC periodically monitors the
strength of signals you receive directly from the other
stations. If the station’s signal is strong enough to allow
direct contact without a repeater, the “ ” icon blinks.
Press [REV] (1s) to turn the ASC On.
• When the ASC is On, the “ ” icon will appear on the display.
• While direct contact is possible, without the use of a repeater,
the “ ” icon will begin blinking.
• To exit ASC, press [REV].
Note:
◆Pressing [PTT] will cause the “ ” icon to stop blinking.
◆ASC does not function if you are using simplex operation.
◆ASC does not function while scanning.
◆Activating ASC while using Reverse will switch the Reverse
function Off.
◆If you recall a Memory channel or the Call channel, and those
channels are set up with the Reverse function switched On, the
ASC will switch Off
◆You cannot use ASC when the built-in TNC is turned On.
◆ASC causes received signals to be momentarily intermitted every
3 seconds.
TONE FREQUENCY ID
This function scans through all tone frequencies to identify
the incoming tone frequency on a received signal. You
can use this function to find which tone frequency is
required by your local repeater.
1Press [TONE] to switch the Tone function On.
• The “ ” icon appears on the display.
2Press [F], [TONE] (1s) to run the Tone Frequency ID
scan.
• Scan starts and “Scanning”blinks on the display.
• To reverse the scan direction, turn the Tuning
control clockwise <or press [ ]> (upward scan) or
counterclockwise <or press [ ]> (downward scan).
• To quit the function, press [ESC ].
• When the tone frequency is identified, the identified
frequency appears on the display and blinks. Press any
key other than [OK] while the identified frequency is
blinking, to resume scanning.
3Press [ OK] to program the identified frequency in
place of the currently set tone frequency.
• The Tone function will remain On. You can press [TONE]
to switch the Tone function Off.
• Press [ESC ]if you do not want to program the
identified frequency.