Instruction manual

SM100 16
63. Carefully push the antenna board into the PVC pipe until only the F
type connector extends from the end. Fit the PVC pipe onto the elbow.
You can now place the caps on both PVC pipes. Be sure that the one
that covers the antenna board has a hole just large enough to allow the
connector to pass through.
64. Connect a coaxial cable between the main board and the antenna
board. The cable should have an RCA type connector on one end, and
a type F adaptor on the other. It can be any length up to 500 feet.
Remember to keep the polarity of the wires the same. The center
conductor should terminate at the center of each connector. If you wish
to hook up another external antenna for use when the signal magnet is
not needed, hook it to the RCA jack labeled “EXT ANT”.
65. Run a wire from the output jack to the antenna connection on your
radio. The outer connection on the jack is the ground wire.
Congratulations! You have completed the Signal Magnet. Take a few
minutes to look over all of your work. Look for cold solder joints, solder
bridges, misplaced parts, and any construction mistakes in your antenna.
SETUP AND TESTING
To test your Signal Magnet antenna, you need just two things. First, you
need a 12 volt AC power supply. Connect this to J3, the miniature
phone jack. The center lead should be positive. Next, you need an AM
radio. Depending on what you are using the kit for, this could be a short
wave receiver or AM broadcast receiver.
With the tuning knob fully CCW, connect a DC voltmeter across J1.
Adjust R17 for 13.5V DC. This sets the antenna supply voltage.
Run RG-59, or similar coax between the F-type connector on the
antenna board and the RCA jack on the main board marked SM ANT.
Connect another wire from the RCA jack on the main board marked
OUT, to your radio.
Turn on the 12V power to the SM100, and tune the AM radio to the
desired frequency.
When the radio is tuned to the proper frequency, slowly turn the tuning
knob back and forth until the received signal is the loudest. This will give
you the best possible performance, while filtering out any interference
caused by other signals.
Placing the antenna down low, possibly on the floor, turn it back and
forth until the desired station is at its loudest level. This is because it is
as far as possible from lights and other electric sources of interference.
You may experiment to find the best location for it in your particular
situation.