Yaesu FT-847, Руководство по эксплуатации

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55
FT-847 O
PERATING
M
ANUAL
OPERATION
FM T
RANSMISSION
C
ROSS
-
BAND
R
EPEATER
O
PERATION
Here is the procedure for setting up cross-band repeater
operation:
•
Press the [
SAT
] switch to activate “Satellite” op-
eration.
‚
Set the desired transmit frequency into the Sub
VFO, and the desired receive frequency into the
Main VFO.
ƒ
Rotate the
SQL
control such that the background
noise is silenced.
„
Press the [ MENU ] switch to enter the Menu mode.
…
Rotate the
SUB-TUNE
knob to select Menu #41
(“
X RPT
”).
†
Rotate the MEM/VFO CH knob to set this feature
to “
ON
.”
‡
Press the [ MENU ] key to exit the Menu mode.
D u r i n g c r o s s - b a n d r e p e a t e r o p e r a t i o n , t h e
[
RX
(
HOME
)], [
TX
(
VFO/M
)], and [
A
u
t
B
] keys are
all functional, for control of the uplink and downlink
frequency relationships.
Note : The cross-band repeat function (Menu #41) can
only be initiated while the“Satellite” mode is
activated. If the “Satellite” mode is not acti-
vated, the Menu system will not allow Menu #41
(
X RPT
) to be set to the “
ON
” position.
To exit the cross-band repeater mode, press [ SAT ]
swicth momentarily, or re-enter the Menu, and set
Menu #41 to “
OFF
.”
The FT-847 can be set up to operate as a one-way
“range extender,” using the Menu system. This fea-
ture is useful for emergency portable work in a remote
area to extend the range of a dual-band hand-held trans-
ceiver. However, please remember these points before
using the cross-band repeater function:
l
Check the amateur radio rules and regulations for
your country, to ensure that this type of operation
is permitted.
l
Pick your frequency pair carefully, so as not to cause
harmful interference to other users. The use of
cross-band repeaters has the potential to cause se-
rious disruption of communications circuits, and
the creation of harmful interference is inconsider-
ate and may be illegal! If you are not sure of active
repeater frequencies in your area, a safe rule is to
stay off of the repeater sub-bands and use the FM
simplex portion of each band.
Contact your area’s
frequency coordinator for guidance.
l
Remember that the transmit duty cycle will be much
higher during repeater service, so we recommend
that the transmit power level be set to 25 Watts or
lower, to ensure cooler operation.
l
Transceiver CTCSS or DCS Encode/Decode set-
tings may, of course, be activated, allowing selec-
tive calling for your cross-band repeater. However,
keep in mind that, if the channels you use are so
busy as to motivate you toward CTCSS/DCS de-
coding, you may not have chosen a good frequency
pair on which to operate, as the potential for inter-
ference to other users is high.