MFJ-1780
Box Fan
Loop Antenna Instruction Manual
9
- Always ground the controller box to the station ground buss.
- Never transmit with more than 150 watts through the controller box.
- Always ground the shield of the feed line to a good earth ground for lightning and RF protection.
TESTING AND OPERATION
Warning!
Connecting a power supply that has outputs grounded to chassis or earth ground
will result in damage to the controller box.
To test your new installation and familiarize yourself with tuning the loop antenna, follow this
procedure:
YOU MUST CAREFULLY READ THE WARNING SECTION LOCATED ON PAGE 1
BEFORE GOING ANY FURTHER!!!! MAKE SURE YOU UNDERSTAND ALL WARNINGS
BEFORE YOU ATTEMPT TO TEST OR OPERATE THIS ANTENNA!!!!
1 - With power disconnected, set the group
FAST TUNE
switches in the OFF position (out).
2 -
Connect the loop coax feedline to the proper connector on the rear panel of the controller box.
Failure To Connect The Coaxial Leads To The Correct Connectors On The Controller Box
Can Damage The Controller Box Or Other Equipment!
See figure 6. Be sure the cable to the
transceiver and the power supply (if used) are connected.
3 -
Plug the power supply into a 110 Vac outlet.
4 -
Cycle the loop to the bottom of it's tuning range by pushing in the
Fast Tune
"DOWN" button. The
frequency "DOWN" LED should light until the loop reaches the end of the tuning capacitors
rotation (20-45 seconds) and then extinguish. release the "DOWN" button.
Figure 7
