To connect a TV antenna to an HDMI-only screen, use an ATSC digital TV converter box: it receives broadcast signals from the antenna and sends video to the screen over HDMI. The OWERSLYN is best for a compact setup, while the ZJBOX adds recording and media playback features. An indoor antenna can supply the broadcast signal, but it does not convert that signal to HDMI. The other listed adapters work in different directions or with different video signals, so check their limitations before buying.
| Product | Best suited for | Key distinction |
|---|---|---|
| OWERSLYN ATSC Converter | Small HDMI-connected setups | Compact tuner with HDMI output |
| ZJBOX ATSC Converter | Recording and USB playback | Timer, channel list, and media features |
| HIDB Indoor Antenna | Receiving local broadcasts | Antenna only; not an HDMI converter |
| HDMI-to-RF Modulator | Sending HDMI to an RF-input TV | Converts in the opposite direction |
| BNC-to-HDMI Converter | Compatible analog security cameras | Not for antenna or cable TV |
OWERSLYN Compact ATSC Converter
Best for: A viewer who wants an antenna tuner with HDMI output in a compact form. This ATSC converter receives over-the-air broadcast signals and outputs them to a TV, projector, or monitor. Its small design can tuck behind a display, and the listed features include 1080p HDMI output, USB power, and a remote with a learning function.
It also offers 3RCA and component output, with HDMI and 3RCA cables included. The box supports program recording and playback, as well as USB media playback. It is a practical pick when the display has HDMI and the viewer wants additional output options.
Limitation: It is not compatible with TVs that only have an RF input, and the listed features say CH3/CH4 channel switching is not supported. An antenna is still needed to receive broadcasts.
ZJBOX ATSC Converter With Recording
Best for: Viewers who want antenna reception along with recording and USB media functions. The ZJBOX receives ATSC broadcasts from an external antenna and converts them for analog or digital TVs, projectors, and computer monitors. It provides HDMI output at up to 1080p, with the actual broadcast picture depending on signal quality.
Listed features include TV recording, playback, a favorite-channel list, parental controls, closed captions, auto tuning, and timer settings. It can also play photos, MP3 music, movie files, and recorded programs from USB storage. Choose this model over a basic tuner if those extra functions matter.
Limitation: Recording and media playback require USB storage, which is not specified as included. Reception quality depends on the antenna signal available at the location.
HIDB Indoor TV Antenna
Best for: A household that needs an indoor antenna to supply local over-the-air signals. The HIDB model is described as an omnidirectional antenna with a magnetic base, intended for placement on a TV stand or table. Its role is signal reception, not conversion to HDMI.
To use it with an HDMI-only display, connect the antenna to a compatible ATSC converter box, then connect the converter’s HDMI output to the display. This pairing separates the two jobs: the antenna receives broadcasts, and the tuner processes them for the screen.
Limitation: This product alone cannot convert antenna signals to HDMI or tune channels. Actual channel availability and reception depend on local broadcast conditions and antenna placement.
Kurtmark HDMI-To-RF Modulator
Best for: A setup that needs to send an HDMI source to a TV with an RF/coax input. This device converts HDMI into NTSC RF output on channel 3 or 4, and includes an HDMI cable and power adapter. It is a useful comparison because its name includes RF and HDMI, but its signal direction is the reverse of an antenna-to-HDMI connection.
Limitation: Do not choose it to connect an antenna to an HDMI display. The product listing explicitly says it does not convert RF/coax to HDMI.
BNC-To-HDMI Video Converter
Best for: A user connecting a compatible analog CVBS security camera or DVR to an HDMI display. The listed converter accepts BNC composite video, detects PAL or NTSC signals, and supports 720p or 1080p HDMI output with selectable 4:3 or 16:9 display modes.
Limitation: This is not an antenna tuner. The product information says it does not work with antenna or cable TV and is not for digital, AHD, TVI, or CVI cameras. Choose an ATSC converter box instead for broadcast television.
Buying Guide: How To Connect An Antenna To HDMI
Do you need an antenna, a converter, or both?
An antenna captures local broadcast signals. An ATSC converter box tunes those signals and provides HDMI output. If the display already has a suitable antenna input and built-in broadcast tuner, it may not need a separate converter. For an HDMI-only monitor or projector, look for a converter box with an antenna input and HDMI output.
Which features should you compare?
- Signal standard and ports: Confirm the device receives ATSC broadcasts and has HDMI output. Check the display’s available inputs before ordering.
- Recording needs: Compare USB recording, playback, timer functions, and channel-list features. Check what storage is required.
- Extra outputs: RCA or component outputs can help with certain older displays, but do not assume every listed connection fits your equipment.
- Signal reception: Antenna placement and local broadcast conditions affect which channels are available and how reliably they come in.
- Direction of conversion: HDMI-to-RF sends a source toward an RF-input TV; it does not bring antenna signals into an HDMI display. BNC converters are for specified camera signals, not broadcast TV.
Frequently Asked Questions
Can I connect a TV antenna directly to an HDMI port?
No. An antenna uses an antenna/coax connection, while HDMI carries processed audio and video. Use an ATSC tuner or converter with antenna input and HDMI output.
Does an indoor antenna convert channels to HDMI?
No. An antenna receives broadcast signals. A compatible tuner or converter box is needed to output those signals over HDMI.
Will an HDMI-to-RF modulator work for antenna-to-HDMI?
No. It converts HDMI into RF output, the opposite direction. It does not convert antenna RF signals to HDMI.
Can a BNC-to-HDMI adapter tune local TV channels?
No. The listed BNC converter is for compatible analog CVBS camera or DVR signals and is specifically not intended for antenna or cable TV.