Fm Repeater Operation - Kenwood TS-50S Instruction Manual

3 COMM:UNICATION
FM REPEATER OPERATION
Compared to the usual simplex method of FM
communications on HF, which is radio to radio with
antennas at or slightly above average terrain, you can
often transmit much farther through repeaters.
Repeaters are typically located on a mountain top or
other elevated location. Most often they operate at a
higher ERP (Effective Radiated Power) than the
average mobile or fixed amateur station. This
combination of elevation and high ERP allows
communications over wider and longer distances than
can be achieved by the average station.
HF repeaters operate only in the 29 MHz FM sub-
band. This special service combines the advantages of
FM operation, good fidelity with noise and interference
immunity, with the excitement of HF DX (long
distance) communications.
Even on a quiet day, 10 meter FM provides reliable
around-town communications with the exciting
potential for sudden DX from across the country, or
around the world.
Note: Some 10 meter FM repeaters use CTeSS (Continuous
Tone Coded Squelch System, also referred
to
as tone or "PL"
[Private Line]) to prevent other repeaters on the same frequency
from keying and locking each other up. If
CTeSS is
used by a
repeater in your araB, set both the tone frequency and tone type
from Menu B,
Nos. 53
and
54. rhe
defaults
are 88.5
Hz and
C
(continuous). Refer
to
the ARRL Repeater Directory or similar
reference for tone information. For setup Information, refer to
.. Menu Set-up" on page
47.
European Operation:
In Europe,
a
1750 Hz tone
is
used to
access
repeaters. Although
the required
1750
Hz burst tone can be generated uSing Menu
B,
Nos.
53
and
54,
deviatior] has been adjusted for CTCSS
repeaters. European applicatIOns may require the deviation
to
be adjusted. Consult your local Kenwood dealer
If
you wish to
use
the 1750 Hz tone feature.
1 Set the repeater receive frequency (your transmit
frequency) and mode in VFO A.
Example: Set 29.580 MHz FM in VFO A.
'M
2 Press the A/B button to select VFO B.
29
3
4
Set the repeater transmit frequency (your receive
frequency) and mode in VFO B.
Example: Set 29.680 MHz FM in VFO B.
C'3.f,B[fD,,,
20 40 6000
a ,olllllli:l
'M
Press the SPLIT button. The SPLIT and TONE
indicators appear on the display.
VFCl B SPUT
C' 3.
f,
B [f
[J '"
8 20 40 50dB
B
101ll:!ID
'"
TONE turns on automatically whenever FM mode
and split operation are selected unless Menu A.
No. 15 is turned off. Select the desired tone
frequency by using Menu B, No. 53. Use Menu
B, No. 54 to choose either a burst or continuous
tone.
S Hold the PTT switch and speak into the
microphone. Use the M.lN button to store the
current settings in memory (channel 00 through
98).
Note:
Be
sure your transmission does not Interfere with others.
2 Speak
In
a
normal tone of voice. The RF meter will
Indicate
a
steady carrier, regardless of voice peaks.
Speaking too close to the microphone, or too loudly may
increase distortIOn and
reduce
intelilgibifity. When
operating through
a
repeater, over deviation will
cause
your signal to ··talk-off·· (break up) through the repeater.
6 Release the PTT switch to receive.