Fast Start - MFJ Legal Limit IntelliTuner -998RT Instruction Manual

MFJ-998RT Legal Limit IntelliTuner
WARNING
•
Never operate the tuner with its cover removed. Contact with the components inside the tuner
while transmitting can result in painful RF burns.
•
Locate the tuner so that the terminals are not accessible during operation. The single wire
connection may have high voltage while transmitting.
•
Disconnect all antennas from the tuner during lightning storms.
•
Always tune with low power (about 10 watts). Apply maximum power only after tuning up.
•
Never exceed tuner specifications.
•
Do not transmit with a high SWR for extended periods of time.
Connect the MFJ-998RT to the transceiver, the amplifier, and the antenna as shown in Figure 1 and per
the following directions:
1. Connect your transceiver or amplifier (if used) output to the MFJ-4117 BIAS TEE RF connector
using a 50-ohm coaxial cable.
2. Connect the MFJ-4117 BIAS TEE to a 12-15 VDC voltage source capable of supplying at least
1.4 amps. The center pin on the power connector is positive.
3. Connect the MFJ-4117 BIAS TEE RF/DC output to the TRANSMITTER connector on the MFJ-
998RT
4. Connect your coax-fed antenna to the ANTENNA connector using a 50-ohm coaxial cable, or
connect your random wire to the WIRE binding post.
WARNING
Do not connect both the ANTENNA and the WIRE antennas at the same time.
5. Connect your ground connection to one of the GROUND posts.
6. Key your transceiver to output a carrier of 5-20 watts CW, FM or AM. Insure the tuner tuned to an
SWR of 1.5:1 or better.
7. You are ready to transmit.
Note:
•
When the tuner power is OFF, the tuner is in bypass mode and RF from the transmitter goes
directly to the antenna with no matching. The tuner also powers up in the bypass mode.
•
During the automatic tuning process, the tuner will make some noise. These are the relays
switching at a very high rate, and it is normal. Do not be alarmed.
© 2011 MFJ Enterprises, Inc
TM
Automatic Remote Antenna Tuner

Fast Start

Figure 1 Basic Setup
MFJ-998RT Version 1A
Instruction Manual
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