17
VL-2000 Operating Manual
Operation
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A
mpliFier
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Before operating, please check the following items:
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Confirm whether wiring does not have a miss wiring again.
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Confirm that the AC power plug connect to 220 Volt AC power directly. The
VL-2000
requires 220 Volt AC power for
1.5 kW operation
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Confirm that the
ATT
switch is set to “on” position, when connect the exciter having exceed 100 watts PEP.
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Confirm that the antenna SWR is less than 1.5:1.
1. Turn the
VP-2000
POWER
switch “on”, then turn
the
VL-2000
POWER
switch
“on”.
2. Turn the transceiver’s
POWER
switch “on”.
If using a Yaesu transceiver with a BAND DATA Ca-
ble, and the
REMOTE
switch on the rear panel of the
VL-2000
is set to “on”, the
VP-2000
AC power will
be remotely controlled by the transceiver’s
POWER
switch.
3. Set the
INPUT
switch to the position which is con-
nected to the exciter.
4. Select the amateur band of the transceiver you wish to
operate on.
If using a Yaesu transceiver with a BAND DATA
Cable, band selection will occur automatically when-
ever you change bands on the transceiver. Otherwise,
select the amateur band of the
VL-2000
to same as
the transceiver.
5. Select the operating mode of the transceiver you wish
to operate on.
6. Set the
OPERATE
switch to “on”. The “OPERATE”
LED will glow red.
7. Press and hold the
TUNE
button for 1/2 second to
begin automatic tuning. The transmitter will be en-
gaged, and the red
TUNE
LED will blink while tun-
ing is in progress. When the optimum tuning point
has been reached, the transceiver (and
VL-2000
) will
return to receive, and the
TUNE
LED will glow red
steadily (instead of blinking).
8.
For SSB and CW operation
, make sure to adjust the
Microphone Gain and/or Drive control on the trans-
ceiver for proper ALC indication on the transceiver
ALC meter, as described in the transceiver manual.
Generally, for SSB, the ALC meter indication should
not deflect beyond a certain ALC limit (the “ALC”
zone on the transceiver’s meter) on voice peaks; on
CW, the ALC indication should be just enough to
cause slight meter deflection. Higher ALC levels may
produce distortion or key clicks, without producing
any additional power output.
In the CW mode, the
VL-2000
allows you to full
break-in operation. However, the full break-in opera-
tion may give the stress to the T/R switching relays.
For FM, SSTV, RTTY, or Packet operation
, You may
enable 1.5 kW operations, if the following condition is
satisfied.
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Normal Temperature: +41 °F to +95 °F
(+5 °C to +35 °C)
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Normal humidity (45 % to 85 %)
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Side Clearance: 10 inches (25 cm)
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Rear Clearance: 12 inches (30 cm).
Otherwise, press the LOW switch to select the LOW
power condition to prevent the overheating during
continuous operation.
For AM operation
, adjust the Drive or RF Power
control on the transceiver so that the
METER-1
(“PO”
meter) on the
VL-2000
does not exceed 375 watts (on
1.5 kW operation) or 125 watts (on 500 watt opera-
tion) when transmitting a carrier.
o
perATinG
p
recAuTionS
Summarized below are some precautions to adhere to in order to ensure long life and trouble-free operation with
the
VL-2000
.
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Do not turning the
POWER
switch “on” or “off” while transmitting.
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When changing bands, always make certain that the
VL-2000
is set for the same band as the transceiver before
transmitting, and that the proper antenna is connected.
Remember that, when the
VL-2000
is switched “off” the
INPUT-1
jack is automatically connected to the
ANT
1
jack and the
INPUT-2
jack is automatically connected to the
ANT DIRECT
jack.
r
Reduce the drive power (set the
ATT
switch to “on”), if the exciter output which you connected exceeds 100
watts PEP.
FCC ID: K6620321X70
Vertex Standard Co., Ltd.
