Satellite & Antenna Diplexer Combiner Splitter – DVB-S2 T2 ATSC

Tuoying MX21D Satellite & Antenna Diplexer – Combine or Split Signals Effortlessly

The Tuoying MX21D ZSAT/ANT Diplexer lets you run both your satellite dish and terrestrial TV antenna signal through a single coaxial cable — saving you money on cabling and installation without sacrificing picture quality. It works in both directions: combine two signals into one cable, or split a combined signal back to two devices. Compatible with all major digital TV standards including DVB-S2, DVB-T2, DVB-C, ISDB-T, and ATSC, making it a universal solution for homes, caravans, hotels, and broadcast installations worldwide.

Made in Mainland China.

Key Features

• 2-in-1 Function: Works as both a combiner and a splitter — one unit handles both tasks
• Universal Standard Support: Fully compatible with DVB-S2 (satellite), DVB-T2 (digital terrestrial), DVB-C (cable), ISDB-T, and ATSC signals
• Single Cable Runs: Combine satellite + antenna signals over one coax line to reduce clutter and cable costs
• Low Signal Loss: Engineered for minimal insertion loss to keep your signal crisp and clear
• CE Certified: Meets European safety and electromagnetic compatibility standards
• Compact & Durable: Solid, low-profile housing that tucks neatly behind your TV or set-top box
• No High-Concern Chemicals: Manufactured without hazardous substances
• Brand: Tuoying (MX21D model)

What's in the Box

• 1 × Tuoying MX21D Diplexer (Combiner/Splitter)

Compatible Signal Standards

Ideal For

• Home entertainment setups combining satellite and antenna on one coax drop
• Caravans, motorhomes, and holiday homes where cable runs are limited
• Hotels, MDUs (multi-dwelling units), and IPTV/broadcast installations
• Anyone upgrading from single-standard to multi-standard TV reception

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For more information on digital TV signal standards, visit the FCC's consumer resources or refer to the NIST signal standards documentation.

Frequently Asked Questions

Q: What is a diplexer and how does the Tuoying MX21D work?

A: A diplexer is a passive device that combines or separates two different frequency signals on a single coaxial cable. The MX21D allows you to feed both a satellite dish (high-frequency band) and a terrestrial/antenna signal (lower-frequency band) through one coax cable. At the other end, a second diplexer separates the signals back to your individual receivers — satellite box and TV tuner — with minimal loss.

Q: Is the MX21D compatible with my TV standard (ATSC/DVB-T2/ISDB-T)?

A: Yes. The Tuoying MX21D is designed to be a universal diplexer compatible with all major digital TV broadcast standards: DVB-S2 (satellite), DVB-T2 (European & Australian digital terrestrial), DVB-C (cable), ISDB-T (Japan, Brazil, South America), and ATSC (USA, Canada, Mexico). It handles the signal passively and does not decode, so it works regardless of your regional standard.

Q: Do I need two diplexers or just one?

A: If you want to combine two signals at the source (e.g. at your roof/antenna point) and split them again at your receiver end, you'll need two units — one acting as a combiner and one as a splitter. If you already have a combined cable feed and simply need to separate the signals at your TV, one unit is sufficient.

Q: Will this diplexer reduce my signal quality?

A: The MX21D is engineered for low insertion loss, meaning signal degradation is kept to a minimum. As with any passive splitter, there is a small, standard insertion loss, but it is designed to be well within acceptable limits for HD digital TV reception.