Shure PWS Tour Series Helical Antenna

The Shure HA‑4540 is a professional Tour Series (TS) helical antenna designed for use with Shure wireless systems in demanding RF environments. It provides stable, dropout‑free radio‑frequency performance in a low‑profile, compact form that is easier to transport and store for touring, productions, and installations. The helical design offers improved signal reliability over traditional antennas by supporting circular polarization, which helps reduce signal nulls and dropouts. This antenna is used to extend range and improve RF reception quality for wireless microphones, in‑ear monitor systems, and other UHF wireless setups.

Key Features

• Designed for touring and compact installations with a low‑profile, easy‑to‑store form factor.

• Helical antenna design for enhanced RF performance and reduced signal dropouts compared to standard antennas.

• Frequency range (typical): covers UHF bands useful for wireless systems (commonly listed as around 470–698 MHz; some sources note extended ranges).

• Circular polarization to mitigate issues with polarization changes and reflective environments.