Yaesu FTV-1000, Руководство по эксплуатации

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FTV-1000 Operating Manual Page 9
Operation
50 MH
Z
O
PERATION
6. Should you experience overloading from very strong
adjacent-frequency signals, the RF amplifier can
be bypassed by turning on the
IPO switch. In this
mode, the sensitivity will be reduced, and the over-
loading should be eliminated. When the preampli-
fier is bypassed, the red “
IPO ON ” indicator will be
illuminated.
7. The wide array of receiver features of the MARK-V
FT-1000MP, such as the EDSP Noise Reduction,
Contours, IF Shift, IF Width, IDBT, etc., are all avail-
able while operating on the 50 MHz band via the
FTV-1000 . Remember, though, that the frequency
conversion is to the 28 MHz band, to the VRF
(Preselector) filter will not be available, as it only
functions on the 160 – 20 meter bands.
HOW TO CHANGE THE FREQUENCY
FORMAT (28 MHz 50 MHz)
Formatting the display for direct indication of the
operating frequency requires that you initialize the
operating frequency to a lower band edge, as a start-
ing point. Please initialize the operating frequen-
cies, prior to changing the setting of
Menu #3-3
, to
the exact frequencies shown in step (1) below.
1. Set the frequency of the MARK-V FT-1000MP
to “28.00000 MHz” (exactly) when you intend
to operate on 50 ~ 52 MHz. Set the
MARK-V
FT-1000MP to “26.00000 MHz” if you intend to
operate on 52 ~ 54 MHz.
2. Press and hold in the [ FAST
] key on the
MARK-
V FT-1000MP; while holding it in, press the
[
ENT
] key. The transceiver will now be in the
“ Menu ” mode.
3. Rotate the VRF/MEM CH knob to select
Menu
# 3-3 (
tr-disp
).
4. Rotate the Main Dial knob to select “ 50 ” on the
display.
5. Press the [ ENT
] key to save the new setting
and exit to normal operation.
6. You may now enter frequencies directly from
the transceiver’s keypad. Note, however, that
you must enter “[
2
] – [
8
]” as the “MHz” part of
the frequency, not “[ 5
] – [
0
]” (the transceiver will
make this switch automatically for you; do not
try to override the change).
NOTES (1) : When you wish to return to operation
on 28 MHz, you must change the setting of Menu
#3-3 to “off.”
Note (2) : When you wish to change the operating
segment on the 50 MHz ( 50-52 to 52-54 , or 52-54
to 50-52 ), you must perform the above band-edge
initialization procedures again.
Transmission
1. All basic transmission features of the MARK-V FT-
1000MP are the same, as utilized during transverter
operation, as they are for HF operation.
2. To transmit on a voice mode (e.g. USB), leave all
settings of the MARK-V FT-1000MP unchanged,
except for the setting of the RF PWR control, which
initially should be rotated fully counter-clockwise.
Close the
PTT switch on the microphone, and speak
into the microphone in your usual voice level; while
doing so, advance the setting of the
RF PWR con-
trol until the desired power output level is attained.
Once all five LEDs of the
PO meter are illuminated,
full power (200 W) will have been reached. Do not
advance the transceiver’s
RF PWR control beyond
the point where the ALC indicator just begins to
flicker.
3. For a very clean SSB waveform, set the CLASS
switch to the “ A ” position. Power output will be re-
duced to a maximum of 50 Watts, with the remain-
ing available power being diverted to high levels of
bias for the power amplifier. It is not necessary to
turn on the
CLASS-A switch on the MARK-V FT-
1000MP, as the driver stage of the transceiver (used
to excite the
FTV-1000 ) is already running in Class
A.
4. For AM transmission, do not exceed 50 Watts of
carrier power (approximately 2 LEDs of the PO
meter will be illuminated).
5. For CW transmission, close the key on the FTV-
1000 , and advance the RF PWR control on the
MARK-V FT-1000MP until the desired power out-
put level is obtained. Once all five LEDs of the PO
meter are illuminated, full power (200 W) will have
been reached. Do not advance the transceiver’s
RF
PWR control beyond the point where the ALC indi-
cator just begins to flicker.
6. For continuous-duty digital modes like RTTY and
PSK31, it is recommended that the maximum power
output be limited to about 100 Watts (3 LEDs of the
PO meter illuminated). However, if you make brief
transmissions (three minutes duration or less), full
power (200 Watts) may be used.
7. The FTV-1000 is designed for use into a 50 Ohm
antenna system. While minor deviations from the
50-Ohm value are of no significance, the automatic
protection circuitry of the
FTV-1000 will begin to
reduce the power output when the antenna system
SWR exceeds 2.5:1.