The Clear-Com PTX-3-21 is a UHF Digital Hybrid wireless IFB Transmitter base station in operating in Block 21, that's 537.6 to 563.1 MHz with DSP capability. Wireless IFB (interruptible fold back) systems operate between 486.4 and 639.9MHz. Wireless IFBs are used for one-directional communication. Directors and other management can use this to monitor program audio, or for talent cueing and crew communications during a production.
The PTX-3 uses a synthesized, frequency selectable main oscillator. The frequency is extremely stable over a wide temperature range and over time. This flexibility significantly helps avoid interference problems in mobile or traveling applications.
The transmitter can be powered from any external DC source of 6 to 18 Volts at 200 mA maximum or from the provided 12 Volt power supply with a locking power connector. The unit has an internal self-resetting fuse and reverse polarity protection.
The PTX-3 is housed in a machined aluminum case with a tough electrostatic powder coating. The front and rear panels are anodized aluminum with laser etched engraving. The included antenna is a right angle, 1/4 inch wavelength monopole with a BNC connector, constructed of polymer coated flexible steel cable.
Please Note! This item is just one component of a larger system. Please refer to the diagram for ideas and recommendations for your Clear-Com intercom system