Shure PA411 Antenna Combiner for PSM300

The Shure PA411 is a wideband antenna combiner designed for engineers who need to run several PSM300 in ear monitor transmitters without the tangle of multiple antennas and power supplies. By feeding the RF output and DC power for as many as four transmitters into a single unit, it lets you build a cleaner, more reliable rack that is easier to transport and faster to set up.

Operating anywhere between 470 and 865 MHz, the PA411 covers every PSM300 band, so you can switch frequencies or add transmitters without changing hardware. Each of the four rear-panel ports delivers 12 V DC, and the ports share a total current supply of 1.4 A. That means every connected transmitter draws power straight from the combiner, leaving only one external 15 V supply to plug in.

Front-panel status LEDs give instant confirmation that RF signal is present and warn if any channel starts to overload. A front power switch lets you shut the system down without reaching behind the rack, and 40 dB of reverse isolation keeps signals from leaking back into the transmitters and causing interference.

The half-rack chassis slides easily into portable fly racks or permanent broadcast installations. Rack ears, a quarter-wave whip antenna, BNC hardware, and the power supply ship in the box, so you can mount the unit and put it to work right away in clubs, houses of worship, theaters, or corporate event venues.

• Distributes RF signal and 12 V DC power for up to four Shure PSM300 transmitters
• Wide 470 – 865 MHz operating range covers every PSM300 frequency band
• Total DC output capacity of 1.4 A across four ports with single 15 V input
• Front-panel RF LEDs show signal presence and overload status at a glance
• 40 dB reverse isolation prevents unwanted interaction between transmitters
• Compact half-rack form factor with included rack ears, whip antenna, BNC hardware, and power supply