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POMPTON PLAINS, N.J. — February 6, 2025 — Zaxcom is pleased to announce the MicPlexer 3, a RF filter and amplifier offering enhanced frequency coverage, a 50 MHz tuning window, continuous 2 MHz step tuning, variable output level control, and RF overload indicators.
MicPlexer 3 has a frequency operating range of 470-965 MHz1 with a minimum tuning window of 50 MHz. This provides more flexibility in frequency selection over MicPlexer 2 when attenuating frequencies outside the tuning window.
Additionally, the MicPlexer 3 is continuously tunable in 2 MHz frequency steps. This is essential to maximize the bandpass filter’s ability to maximize the utilization of available spectrum. The architecture provides an advantage over distribution systems with SAW filters. The sharp bandpass rejection and adjustable tuning also makes it preferable over products with fixed high-pass filters.
MicPlexer 3 features a completely overhauled bandpass filter that’s continuously tunable, providing excellent RF rejection while preventing RF overload from walkie-talkies and mobile devices that can cause intermodulation in the distribution amplifier, ruining the performance of a connected receiver. For example, with the device tuned to 550 MHz, RF information between 525 MHz to 575 MHz will pass through and any RF information outside that range will be filtered out, for instance, walkie-talkies working at 460 MHz with an attenuation of 30 dB.
The bandpass window has been designed to be as narrow as possible yet wide enough to support a variety of productions, including film, television, and sports.
MicPlexer 3 supports 2 channels of amplification with 4 sets of user-adjustable outputs. Operating below 665 MHz is selectable from -10 dB to +6 dB, while operating above 745 MHz it’s selectable from -10 dB to +3 dB relative to the input signal. MicPlexer 3 has an overload LED indicator for each antenna input. If the unit determines the receiving RF signal is too strong the LED will indicate an overload condition.
MicPlexer 3 has an excellent amplifier, with a noise figure of .35 dB and an OIP3 of +34 dB. The device can handle any high-RF environment, adding protection from its high-Q RF filtering. SMA antennas are used on both inputs, making it simple to bypass the MicPlexer 3.The unit is powered from 10-18 VDC at a current of 50 mA making it a very efficient device for battery powered applications.
MicPlexer 3 is available now. Check with your authorized Zaxcom dealer for pricing information.
1Not included is 666-744 MHz as a portion of this spectrum is licensed for mobile device use only.
Find out more about Zaxcom’s product line at www.zaxcom.com.
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ABOUT ZAXCOM, INC.
Since 1986 Zaxcom, Inc. has been creating innovative audio technology for the feature film, television broadcast, live performance, and post-production industries. With a focus on high-quality audio products in multi-track recording, mixing, and digital wireless, Zaxcom is proud to be honored with technical achievements from the Academy of Motion Picture Arts and Sciences, Television Academy, and Cinema Audio Society. Zaxcom operates its production facilities in Pompton Plains, NJ, and continues to set the standard for sound professionals worldwide. For more information, visit www.zaxcom.com.