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For most installations, squelch does not need adjustment, and it keeps the performer from hearing hiss or noise
bursts if the RF signal becomes compromised. However, in congested RF environments or in close proximity to
sources of RF interference (such as large LED video panels), the squelch may need to be lowered to prevent ex-
cessive audio dropouts. With lower squelch settings, the performer may hear more noise or hiss, but will experi-
ence fewer audio dropouts.
Important: Before lowering squelch, first try to eliminate the problem by finding the best set of frequencies for your
installation and removing potential sources of interference.
Caution: Turning off or lowering the squelch setting can increase the noise level and cause discomfort to the per-
former:
• Do not lower the squelch setting unless absolutely necessary.
• Turn earphone volume to the lowest setting before adjusting squelch.
• Do not change the squelch setting during a performance.
• Turn up the transmitter level setting to make noise or hiss less noticeable.
Squelch Settings
HIGH (NORMAL)
MID
LOW
PILOT ONLY*
NO SQUELCH*
* Symbol appears in dis-
play window.
Point-to-Point Wireless Audio
Use PTP mode to allow a P9T to transmit to a UHF-R receiver. This allows a transmitter and receiver setup where
both units are racked and powered by AC.
For more information visit: www.shure.com/americas/products/personal-monitor-systems
Default factory setting.
Moderately decreases the signal-to-noise ratio required to squelch the re-
ceiver.
Greatly decreases the noise squelch threshold.
Turns off noise squelch leaving only pilot squelch on.
Turns off noise and pilot tone squelch. (Sometimes used as a debugging
tool by monitor engineers or RF coordinators to "listen" to the RF environ-
ment.)
Shure Incorporated
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