The Telex RadioCom BTR 300 is a single-channel VHF wireless intercom base station designed to integrate a standard two-way VHF radio system into a professional wired intercom matrix, such as an RTS party-line system. It functions as a dedicated bridge, enabling full-duplex communication between personnel using the wired intercom network—typically located in a control room, broadcast truck, or fixed production area—and field staff utilizing VHF handheld or mobile radios. Operating on a licensed VHF frequency, this base station receives the half-duplex radio transmissions and converts them into a continuous audio stream on a dedicated matrix port, while simultaneously taking audio from a designated intercom channel and transmitting it over the radio when activated. This bidirectional link is essential for coordinating events like live sports broadcasts, large-scale outdoor productions, and news operations where key team members are dispersed across a wide area.

The unit is engineered for reliability in professional RF environments, featuring robust transceiver circuitry with adjustable RF power output and sophisticated squelch controls, including CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital-Coded Squelch), to minimize interference and ensure that only intended communications are passed to the intercom. Audio processing is tailored for clarity, incorporating compression, limiting, and noise reduction to optimize the voice signal from the often noisy and variable RF environment for the clean intercom path, and vice-versa. The base station typically offers multiple interfacing options, allowing it to connect directly to an intercom matrix via a multi-pin connector (like a DB-25 for RTS systems) or to a standard 4-wire audio plus PTT interface for broader compatibility.

Housed in a 1U rack-mountable chassis, the BTR 300 is built for permanent installation in equipment racks. Configuration of its operating frequency, squelch settings, and audio levels is performed via front-panel controls or dedicated software, with parameters stored in non-volatile memory. It connects to the intercom system via a data/power cable and to external VHF antennas via BNC connectors, with recommendations for high-gain, properly tuned antennas to maximize range and performance. By creating a transparent and reliable interface between radio and intercom technologies, the Telex RadioCom BTR 300 effectively extends the reach of the production communication network, ensuring seamless coordination between all team members regardless of their chosen communication device.