The ANT 005 Coaxial Antenna is a 15 foot coaxial cable with an 80-inch antenna built onto the other
end. The last 80 inches of the antenna is the active element, which is covered by nylon braid.
The
active element should never be altered.
The remainder of the antenna cable is RG-59 coax feedline. If you have excess cable, cut the
excess off and install appropriate in-line connectors. If you need a longer feedline, the cable can
be cut and an extension cable added with appropriate connectors.
Remote Antenna Location Guidelines:
For maximum signal strength, it is best to select an antenna location somewhere within the listening
area. The preferred location is towards the front of the listening area and above the seats. The
active element (nylon braid covered portion) must be kept straight, not coiled, in a vertical
orientation.
Radio signals will generally pass through non-metal structures. The antenna can be mounted on a
wall, in a corner, or behind a wooden beam. It may also be hung vertically from the ceiling, with a
small weight attached to the end to make it hang freely. If you need to run the feedline through a
wall, a 1/2" hole is necessary to pass any connectors through.
Avoid placing the antenna on steel beams or near structural steel elements. Metal plaster lath,
metal studs, ductwork, and foil-backed insulation can absorb radio energy, greatly reducing the
range of the system. DO NOT put the antenna element inside a metal conduit. The feedline may
be routed through metal conduit, but NOT with microphone cables or AC power wiring.
Nylon clamps and screws are provided to attach the Coax Antenna to a wall. Locate the clamps
every 3 - 4 feet. DO NOT bend the cable sharply at any point. Allow at least a 3" radius for turns.
DO NOT staple the cable in place. Use the cable clamps provided or hang the antenna from the
excess nylon braid at the end of the antenna element.
Troubleshooting Guide for the T21 Transmitter:
Symptom:
Transmitter "Power" light not on.
1. Make sure the wall transformer is plugged into the transmitter.
2. Make sure the electrical outlet is on.
Symptom:
No sound through receivers.
1. If some of the receivers work, but others don't, check for bad batteries or earphones on the
receivers that aren't working. Check to see that the receiver frequency matches the transmitter
frequency. Check the frequency selector switches on the transmitter and read the frequency on
the chart on top of the Transmitter. The receiver frequency is indicated inside the back cover of
the receiver. If they do not match, see the Tuning Instructions.
2. If none of the receivers work, check to see if the power is connected to the transmitter and the
"Power" light is on. Check to see if the transmitter and receivers are set on the same frequency.
3. Check to see if the transmitter is connected properly to the sound system. See page 5.
4. Turn the screwdriver-adjust input level control located on the T21 front panel clockwise to
increase the input signal strength until the audio indicator light flashes.
5. If you are not using an input signal from a sound system, make sure the microphone is plugged
into the "Mic" jack on the rear of the T21 transmitter and the input selector switch is in the MIC
(left) position.
6. Make sure the antenna is installed and connected properly. See pages 4 and 9.
Symptom:
Sound through receivers is loud, but distorted.
1. Turn the screwdriver-adjust input level control located on the T21 front panel counter-
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