17
REMOTE
These RJ45 connectors are for an Ameritron remote control
head, or remote operation with an interface box. It provides
access to controls, including most metering functions.
Interconnections
1. If you use a desktop grounding bus system, connect the station ground bus to
the amplifier’s rear panel wing nut. National safety codes require the station
ground electrically bond to the power mains safety ground at the building
entrance. Do not connect the amplifier to its own isolated ground rod or ground
system.
2. Connect the power supply to the amplifier.
3. Connect the RELAY line to the transceiver’s amplifier control port. This port is
usually described or defined in the amplifier interfacing section of the radio or
transceiver manual. This port must pull low for transmit, and be open circuit when
receiving. Relay control voltage from the ALS-1406 is 13 volts positive with only
15 mA current. You should always check your transceiver’s manual, but almost
any standard transceiver directly interfaces with this amplifier.
4. Connect the RF OUT (output) port to the appropriate point in your station. This is
the high power RF output cable. This connection would go to your 1500-watt
rated Power/SWR meter, antenna, or antenna matching device. Good quality
Mini-8 or RG-8X cables are acceptable for anything but RTTY use, although
larger RG-8 style cables are normally preferred.
Your antenna matching
system, or antenna tuner, must connect to this port.
5. Connect the IN connector to your transceiver. Do not install any active antenna
matching devices on this port. In general, the shortest and most direct cable
connection is best, although high quality cables can be very long without adverse
effect on performance. RG-58/U or Mini-8 (RG-8X) style cables are acceptable.
You should never use a tuner of any type on the amplifier input, nor should
you drive this amplifier with over 100 watts peak envelope power.
6. The ALC line is optional. In general, transceiver internal ALC is all that is
necessary. The ALC monitors the RF output power and reflected power supplied
by the ALS-1406 to the load.
7. Operate the bandswitch manually during initial testing. Do not connect band
decoders, band data lines, or computer interfaces until initial tests are completed
and the amplifier is functioning normally.
8. When using an automatic antenna tuner that has the capability to inhibit the
amplifier from operating either during tuning or when conditions are outside of the
tuner’s capability; and when the Radio Interface Cable that has the Amplifier
Relay line included (not using the RELAY jack); the KEY LINE can be used. The
KEY LOOP Switch is used to route the key signal from the interface to the amp
directly or out the KEY LOOP jack.
a. If the KEY LOOP is not used, set the KEY LOOP Switch to OFF so the
Radio Interface Cable can key the amplifier.
b. If the KEY LOOP is used with an automatic antenna tuner switch the KEY
LOOP Switch to ON, run a cable from the KEY LOOP connector on the
Содержание ALS-1406/S
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