Repeater Operation - Kenwood TH-77A Instruction Manual
144/440mhz fm dual bander
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Also See for TH-77A:
- Service manual (92 pages) ,
- Instruction manual (56 pages) ,
- Service manual (92 pages)
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4-6.
REPEATER OPERATION
4-6-1.
Transmitter Offsets
All amateur
radio repeaters
use a separate
receive
and
transmit
frequency.
The
receive
frequency
may
be
above
or
below
the
transmit
frequency.
The
configuration
of
most
repeaters
fall
into
one
of the
categories
listed
below:
UHF band
VHF band
UHF
band
European
version only
of
+600 kHz
+5 MHz
+1.6 MHz
=
—600 kHz
—5 MHz
—1.6 MHz
SS
—7.6 MHz
@ Offset Direction
To select
the desired
transmitter
offset
direction
press
the
SHIFT
key.
Each
time
you
press
these
keys
the
transceiver
advances
from
one
direction
to the
other,
Les
Ste
FF
(a
tp
ae
Se
with.
European
versions) to no offset (simplex).
@
Automatic
Offset
Selection
Oceania versions)
The
TH-77A
is programmed
according
to the
standard
ARRL
(Amateur
Radio
Relay
League)
Band
Plan
with
regard to transmitter offset direction.
(U.S.A.,
Canada
and
34
See
the
accompanying
chart
for additional
information
about
this
programming.
You
can,
of course,
override
this by using the SHIFT key if desired.
145.1 145.5 146.0 146.4 146.6 147.0 147.4 147.6 148.0
S22
S49
ES
—
(eS
pay
S : simplex
4-6-2.
Reverse Function
Some
repeaters use a "Reverse Pair", i.e. the transmit /
receive
frequencies
are
the
reverse
of other
repeaters.
For
example,
repeater
A uses
146.000
for a transmit
frequency
(INPUT)
and
146.600
for a receive
frequency
(OUTPUT).
Repeater
B might use 146.600
for a transmit
frequency and 146.000 for a receive frequency.
It would
be
inconvenient
to
have
to
reprogram
the
transceiver
each time you wanted to use these repeaters.
The
SHIFT
/ REV key allows
you
to easily reverse
the
transmit
and
receive
frequencies.
To
use
the
REV
function press the F key, then the SHIFT/REV key. The R
indicator goes on on the display to indicate that you are
working a reverse pair.
To return to normal press the F key, then the SHIFT / REV
key again. The R indicator goes off.
This function is also useful to check the input frequency
of the repeater so that you can
determine
if you are
within range for simplex communications.
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