Yaesu FT-2800M, Руководство по эксплуатации

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15 FT-2800M O
PERATING
M
ANUAL
B
ASIC
O
PERATION
2) Direct Keypad Frequency Entry
The keypad of the
MH-48
A6J
DTMF Microphone may be used for direct entry of the oper-
ating frequency.
To enter a frequency from the MH-48
A6J
keypad, just press the numbered digits in the
proper sequence. There is no “decimal point” key on the MH-48
A6J
keypad. However, there
is a short-cut for frequencies ending in zero: press the [ #
] key after the last non-zero digit.
Examples : To enter 146.520 MHz, press [
1 ]
à
[
4 ]
à
[
6 ]
à
[
5 ]
à
[
2 ]
à
[
0 ]
To enter 146.000 MHz, press [
1 ]
à
[
4 ]
à
[
6 ]
à
[
# ]
If you cannot get the radio to accept the frequency entry, it is possible that the
channel steps are set to an incompatible value (e.g. if you have 25 kHz steps set,
you cannot set a frequency of 146.520 MHz). See page 19 to learn how to change the
channel step size.
3) Scanning
From the VFO mode, press the microphone’s [ UP
]/[
DWN
] keys momentarily to initiate
scanning toward a higher- or lower frequency, respectively. The
FT-2800M
will stop when
it receives a signal strong enough to break through the squelch threshold. The
FT-2800M
will then hold on that frequency according to the setting of the “Resume” mode (Menu “
23
SCAN
)”; see page 34).
If you wish to reverse the direction of the scan (i.e. toward a lower frequency, instead of a
higher frequency), just rotate the
DIAL knob one click in the counter-clockwise direction
while the FT-2800M is scanning. The scanning direction will be reversed. To revert to
scanning toward a higher frequency once more, rotate the
DIAL
knob one click clockwise.
Press the [ UP
]/[
DWN
] keys again to cancel scanning. You may also press the
PTT button
momentarily; scanning will stop, but you will not transmit until you release the PTT button,
and press it again.
If you have enabled the “Severe Weather Alert” feature, you will occasionally no-
tice “WX” channels interspersed with the regular channels you are scanning. This
is normal, because your radio is constantly monitoring for weather alerts. See page 17.
F
REQUENCY
N
AVIGATION