Kenwood TH-415A - Manual (Page 12)

■ REPEATER OPERATION
• Transmitter offsets
All amateur radio repeaters utilize a separate receiver and
transmitter section. The receiver frequency may be either
above or below the transmitter frequency. The transceiver
allows you to store the frequency and offset in memory, or
you can select the offset and offset frequency from the
keyboard.
Offset direction
To select the desired offset, press the OFFSET/F key. Each
time you press the key the radio will advance from one off­
set to the other, i.e. " + " to " —” to no offset or simplex.
Offset frequency selection
To select the desired offset frequency, press the I
f | and
the OFFSET/F key. The display shows present transmitte
offset.
Press either the I ^ I key or the I ▼ I key momentarily,
the frequency change 100 kHz step up or down from lower
limit 100 kHz to upper limit 9.9 MHz. Press the I
enter |
key to complete the selection.
NOTE:----------------------------------------------------------------------------
You can enter any offset you desire, but if you select an
offset that would cause the radio to go out of band the
radio will ignore the programmed offset, and transmit in the
simplex mode. (For MARS and CAP operators who have
modified their radios to cover the MARS and CAP frequen­
cies this may not be the case. For these sets the
transceiver will accept any offset that does not take it out­
side its tuning range. See the instructions supplied with the
MARS/CAP modification sheet.)
12
• Reverse function
Some repeaters utilize a "reverse pair", i.e. the transmit/
receive frequencies are exactly the reverse of another
repeater. For example repeater A uses 146.000 for a transmit
frequency (OUTPUT) and 146.600 for receive (INPUT).
Repeater B uses 146.000 for its receive and 146.600 for its
transmit. It would be inconvenient to have to reprogram the
radio each time if you were in range of both repeaters.
The R/TONE. F key has been provided to allow you to reverse
the transmit and receive frequencies.
TH-415E/215E : Transmission is inhibited when the
REVERSE key is engaged.
To use the REVERSE function, press the R/TONE. F (or press
and hold the REVERSE) key. The R indicator will light in the
display.
To return to normal offsets press the R/TONE. F (or release
the REVERSE) key again. This function is useful to check the
input frequency of the repeater so that you can determine if
you are within SIMPLEX range.
• Tone operations
Some repeaters require the use of a control signal to activate
the repeater. Several versions are currently in use worldwide.
TH-415A/315A/215A:
These transceiver provides a subaudible tone encoder with 38
standard tone frequencies. To activate the appropriate tone
signaling device, depress the TONE switch on the top of the
radio.
The decoder section is an optional accessory (TSU-4). That
allows for T.SQ (Tone Squelch) operation. With this option
you will only hear those stations that transmit the same
subaudible tone directly.