{"product_id":"clear-com-ptx3-21","title":"Clear-Com PTX3-21 UHF IFB Transmitter With DSP and LCD Interface","description":"\u003cp\u003eThe Clear-Com PTX3-21 is a UHF IFB transmitter built for broadcast engineers, live production crews, and intercom system integrators who need reliable wireless program feed delivery with precision control. Operating in Block 21 (537.6 to 563.1 MHz), it targets applications where frequency coordination in a congested RF environment demands flexibility and stability. DSP processing and an onboard LCD give operators real-time visibility into modulation, frequency, mode, rolloff, and audio level without guesswork at the rack.\u003c\/p\u003e\u003cp\u003eWhere the PTX3-21 separates itself from basic IFB transmitters is in its compatibility depth. It supports IFB, Digital Hybrid Wireless, 200 Mode, 400 Mode, 100 Mode, Mode 3, and Mode 6, allowing it to integrate into mixed-brand wireless ecosystems that are common in broadcast facilities and touring production environments. Audio input configuration is rear-panel selectable for Line, Mic, RTS 1, RTS 2, and Clear-Com standards, accepting both balanced and unbalanced sources. The lockable menu setting prevents accidental parameter changes during live operation, a critical safeguard in high-stakes broadcast or theatrical intercom deployments. The unit operates standalone or mounts in a standard rack using the optional PRK-2 kit, making it adaptable to both mobile cart setups and permanent install bays.\u003c\/p\u003e","brand":"HME Electronics, Inc dba Clear-Com, LLC","offers":[{"title":"Default Title","offer_id":52446828921016,"sku":"75715","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/7382\/4696\/files\/75715_Clear-Com-PTX3-21-UHF-IFB-Transmitter-With-DSP-and-LCD-Interface_ALT03sqr.jpg?v=1786747472","url":"https:\/\/soundpro.com\/products\/clear-com-ptx3-21","provider":"SoundPro","version":"1.0","type":"link"}