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Small black converter box with coaxial output and remote control

Apidextra

Apidextra HDMI to RF Coaxial Converter with Remote Control

SKU CH-FMF0-6D14H

Converts HDMI sources to analog RF coaxial output at 61.25 MHz for older televisions, with remote-controlled picture adjustments

  • Connect legacy TVs via HDMI sources
  • Transmit signals over long coaxial runs
  • Remote adjusts picture position and levels
  • Supports PAL and NTSC broadcast formats
  • Accepts HDMI inputs up to 1080p

HDMI to RF Coaxial Converter

The Apidextra converter translates an HDMI source into an analog RF coaxial signal so older televisions without HDMI inputs can display the picture. It is intended for users who need to connect a DVD player, set-top box, game console or laptop to a legacy TV or a long coaxial cable run. The box only works in one direction, from HDMI to RF, and cannot pass a signal the other way. Picture quality will be lower than the original digital source because the output is an analog RF signal.

Supported Resolutions and Output Frequency

The unit accepts HDMI input at 480i, 480p, 576i, 576p, 720p, 720i, 1080i and 1080p, then modulates it onto a fixed 61.25 MHz carrier. You must use the television's channel search to locate the signal and then press the SYS button to select PAL BG, PAL I, PAL DK or NTSC M to match the display. It does not support ATSC digital tuning, so it will not work with modern digital-only tuners. Long coaxial runs are possible, but the analog output remains the limiting factor for clarity.

Remote Adjustments and Build Integration

A handheld remote lets you shift the output screen vertically, adjust amplitude, brightness, contrast and chroma without touching the box. The converter needs a free HDMI output on the source device and a coaxial antenna input on the display or projector. It frees up the need for an HDMI-equipped screen, letting older sets or RF distribution systems stay in service. Buyers whose displays lack analog RF tuning or who require a digital ATSC output cannot use this device.

Highlights

  • Connect legacy TVs via HDMI sources
  • Transmit signals over long coaxial runs
  • Remote adjusts picture position and levels
  • Supports PAL and NTSC broadcast formats
  • Accepts HDMI inputs up to 1080p

Specifications

BrandE-sds

Questions about this item

Can I connect this Apidextra converter between my 1080P source and an older TV that only has a coaxial input?

Yes, the converter accepts HDMI input resolutions up to 1080P and outputs an analog RF signal on 61.25MHZ for coaxial-only televisions.

How do I verify the Apidextra converter is outputting a signal my TV can tune after I connect everything?

Run your TV's channel search to find the 61.25MHZ signal, then press the SYS button on the remote to select PAL BG, PAL I, PAL DK or NTSC M until the picture appears.

Does the Apidextra box include the coaxial cable needed to reach my television, or must I buy that separately?

The package provides the converter unit and a remote control; a coaxial cable for the RF output connection is not included and must be purchased separately.

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