LP HAL600 Atlantic, User Manual, Page: 16 / 23

M - Operation
M - 1 Connect AC cord and coax cables as illustrated in section Connection .
Connect the cable from TX GND to TX GND or the remote terminals of
transceiver, where it is marked “SEND” or “REMOTE”. These terminal pins
are shorted to ground when the transceiver is in TX/ON AIR mode. If these
connections are not made, the amplifier will not go into TX (amplification)
mode. As a side note, this
TX GND terminal shows 24 VDC when open, and
draws 15 mA when shorted.
M - 2 Keeping the
POWER (AC mains) switch off, check the SWR of your
antenna by keying the transceiver to TX mode (CW or RTTY mode). Monitor
the SWR with an external SWR/Power meter. If SWR is 1:1.8 or higher at
band center, the antenna has to be adjusted for lower SWR.. As an
alternative, an antenna tuner may be inserted;
but beware!
DO NOT EVER RUN THE TUNING OF THE ANTENNA WHEN THE
AMPLIFIER IS IN TRANSMISSION (ON AIR - Green LED lit).
(The tuner of the transceiver must ALWAYS be excluded).
M – 3 Turn the POWER switch on. Check that your configuration is made
comply with the connections. ( See Section Setup and Section Band Data
Cable Connection , for more details of various band data cables).
Verify that the Yellow LED STBY is lit, indicating the STAND-BY mode,
otherwise press the button below to go to STAND-BY mode, the LED is light.
Keying (with PTT or Send) the transceiver to TX mode in CW or RTTY mode,
adjust the output power at about 15-20W; displayed on the line
“I” of the
display. This is the optimum power drive. To make it easier this adjustment,
graphically, on the line
“I” symbol appears ◘
M – 4 Press the key STBY to switch from Stand-By mode to Operate/ READY,
the yellow LED turns OFF.
The AMP is READY TO WORK.
M - 5 With the power drive level to nearly 10-30W to achieve maximum
carrier output power of 500W (CW) from the amplifier. If you change to SSB
mode, peak voice power will reach approximately 600-650W. For high duty
cycle transmissions like RTTY, SSTV, or FM modes, it is recommended you
reduce the drive power by 20-30 % compared with SSB/CW.
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