Setup receiver antennas
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Setup: Receiver Antennas. Determine area of operation of transmitters. Determine receiver antenna locations for best line-of-sight to transmitters. Locate receiver antennas no closer than 15 feet to nearest transmitter. Elevate receiver antennas well above the audience or other obstructions.

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Setup: Receiver Antennas

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Setup receiver antennas

Setup: Receiver Antennas

  • Determine area of operation of transmitters.

  • Determine receiver antenna locations for best line-of-sight to transmitters.

  • Locate receiver antennas no closer than 15 feet to nearest transmitter.

  • Elevate receiver antennas well above the audience or other obstructions.

  • Locate diversity antennas at least two feet apart

  • Keep antennas at least one foot away from other metal objects.

  • Keep antennas at least two feet away from RF noise sources such as digital audio processors, video devices, CD/DVD players, computers, etc.


Setup receivers

Setup: Receivers

  • Programming receivers:

  • Within a given band, ALL systems should be set to the same Group and different CHANNELS within that Group. DO NOT MIX GROUPS!

  • DO NOT USE LETTER GROUPS: A1-A9, B1-B4 unless specifically instructed

  • Set output mic/line switches as necessary.

  • Set front panel output level controls fully clockwise


Setup transmitters

Setup: Transmitters

  • Program transmitters to match receiver Group and Channel set.

  • Set transmitter audio levels

  • Bodypack transmitter: set input attenuation accordingly for lavalier microphone, headworn microphone.

  • Handheld transmitter and bodypack transmitter: adjust gain control in battery compartment so that red LED peak light on receiver just flashes on LOUDEST sound


Pre show checkout

Pre-show Checkout

  • Verify good batteries in each transmitter

  • Turn OFF all transmitters

  • Turn ON all receivers

  • Observe RF signal LED strings on receivers:

  • 0-2 LEDs on either side: channel is OK

  • 3 or more LEDs on either side: channel has excessive interference. Change to another compatible channel

  • Turn on each transmitter ONE at a time to verify signal at corresponding receiver

  • Turn on all transmitters to verify signals at all receivers


Pre show checkout1

Pre-show Checkout

  • Conduct a walk around test for each transmitter throughout the performance area

  • If locations of low RF are found, reposition receiver antennas to compensate if possible.

  • If set pieces or other fixed obstructions are problematic, the allowable performance area may have to be modified.


Show operation

Show Operation:

  • Turn on required receivers.

  • Mute or turn off unused receivers

  • Turn on required transmitters. Transmitters must be at least 15 feet from nearest receiver antenna.

  • Verify reception at receivers

  • Place transmitters with participants

  • Attach to participant as high on the body as possible: breast pocket of jacket, belt, etc.

  • Do not fold or shorten bodypack antenna

  • Position lapel microphone as close as possible to mouth: knot of tie, collar, lapel, etc.

  • Aim directional microphones toward mouth


Show operation1

Show Operation:

  • Position omnidirectional head-worn microphone at corner of mouth

  • Position unidirectional head-worn microphone slightly forward and to the side of mouth

  • Power lock transmitter if desired (press and hold “Mode” and “Set” buttons together).

  • Monitor RF levels during show on the receivers front panels

  • Monitor audio directly on headphone outputs on receiver front panels


General tips

General tips:

  • TURN OFF ALL mobile phones, Blackberrys, Trios, etc.) in the performance area

  • In particular… participants. Units must be COMPLETELY OFF, not just on silent.

  • Do not cue up un-occupied receivers in the sound system. Receivers without active transmitters should be muted or turned off.

  • Do not set up system with some transmitters very close to receiver antennas and other transmitters far away. The nearby transmitters can desensitize ALL receivers.


General tips1

General tips:

  • In the UHF range, line-of-sight is critical: elevate receiver antennas as high as necessary to “see” the transmitters at all times.


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