{"product_id":"kurtmark-hdmi-to-rf-modulator-ch3-ch4-1080p","title":"kurtmark HDMI to RF Modulator CH3\/CH4 1080P","description":"\u003cb\u003ekurtmark HDMI to RF Modulator converts HDMI sources into an NTSC coaxial RF signal (CH3\/CH4) for antenna-style TVs and RF-only displays.\u003c\/b\u003e\n\n\u003cp\u003eThis compact, plug-and-play device sends HDMI video and audio to older televisions or RF-input equipment without drivers or complicated setup. It includes a 1.2m HDMI cable and power adapter so you can connect streaming sticks, game consoles, set-top boxes, or media players directly to a coax input. The unit supports common resolutions up to 1080P and uses PLL control to keep the VHF frequency stable for consistent viewing on NTSC-based TVs.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I hook this up to my TV or console?\u003c\/h3\u003e\n\u003cp\u003eSetup is straightforward: connect your HDMI source to the modulator, attach the coaxial cable from the unit to your TV's antenna\/RF input, select channel 3 or 4 on the modulator, and power the device. No software or driver installation is needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConnect included 1.2m HDMI cable to source and modulator HDMI input.\u003c\/li\u003e\n  \u003cli\u003eUse a coax cable from modulator RF output to TV antenna\/RF input.\u003c\/li\u003e\n  \u003cli\u003ePower the modulator with supplied adapter and choose CH3 or CH4 output.\u003c\/li\u003e\n  \u003cli\u003eSet your TV to the selected channel to view the converted signal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich devices and resolutions are supported?\u003c\/h3\u003e\n\u003cp\u003eThe modulator accepts HDMI 1.4 sources and honors HDCP 1.4, so it works with many streaming sticks, consoles, DVD players, PCs, and DVRs. It accepts a range of input resolutions and outputs a stable NTSC RF signal for legacy displays.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Fire TV, Roku, Apple TV, PS5, Xbox, Nintendo Switch, PCs, and DVD\/Blu-ray players.\u003c\/li\u003e\n  \u003cli\u003eAccepts 1080P, 1080i, 720P, 576P, and 480P input resolutions.\u003c\/li\u003e\n  \u003cli\u003eOutputs NTSC RF on CH3 (61.25MHz) or CH4 (67.25MHz).\u003c\/li\u003e\n  \u003cli\u003eSupports HDMI 1.4 and HDCP 1.4 protected sources.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat kind of picture and signal stability can I expect?\u003c\/h3\u003e\n\u003cp\u003eThe device uses PLL (phase-locked loop) control to maintain a steady VHF frequency and deliver consistent RF output strength. While converting a digital HDMI feed to analog RF has inherent limitations, the modulator provides reliable performance for typical home use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for 1080P conversion with PLL frequency stabilization.\u003c\/li\u003e\n  \u003cli\u003eStandard NTSC audio subcarrier (M: 4.5 MHz) for compatible sound playback.\u003c\/li\u003e\n  \u003cli\u003eRF output level around 80 ± 5 dBµV for typical antenna inputs.\u003c\/li\u003e\n  \u003cli\u003eBest results when used with short, quality coax runs and proper TV tuning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there any important limitations I should know?\u003c\/h3\u003e\n\u003cp\u003eThis product converts HDMI to RF\/Coax only — it does not perform RF-to-HDMI conversion. Also, output is NTSC analog RF on CH3\/CH4, so image fidelity is constrained by analog broadcast format and your TV's RF tuner capabilities.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot reversible: does not convert RF\/Coax to HDMI.\u003c\/li\u003e\n  \u003cli\u003eOutput limited to NTSC analog, not digital over-the-air formats.\u003c\/li\u003e\n  \u003cli\u003eVideo quality is subject to analog RF resolution limits compared with direct HDMI.\u003c\/li\u003e\n  \u003cli\u003eUse with devices that enforce HDCP 1.4 for best compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The kurtmark HDMI to RF Modulator is designed for anyone needing to feed modern HDMI sources into older TVs, hotel-room displays, educational equipment, or RF-only monitors. It’s a practical choice for retrofitting legacy installations, sharing a single HDMI device across multiple RF-only TVs, or connecting consoles and media sticks to coax inputs without replacing existing wiring. If you require full digital output quality, an HDMI-equipped display is recommended; if you need a simple, reliable analog RF solution, this unit offers an all-in-one kit with cable and power supply included.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this convert RF\/coax into HDMI?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — this unit only converts HDMI to RF\/coax. It does not support RF-to-HDMI conversion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which TV channels does it output and what format?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It outputs NTSC analog on CH3 (61.25MHz) or CH4 (67.25MHz), suitable for TVs with RF\/antenna input.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"kurtmark","offers":[{"title":"Default Title","offer_id":48413665624221,"sku":"B0GL1XRHN6","price":50.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/kurtmark-front-panel-and-connections.jpg?v=1781277582","url":"https:\/\/nexoltic.com\/products\/kurtmark-hdmi-to-rf-modulator-ch3-ch4-1080p","provider":"Nexoltic","version":"1.0","type":"link"}