The VeCOAX MICROMOD-3 SDI is the professional single-channel modulator for facilities that run on SDI. It accepts 3G/HD/SD-SDI, HDMI, and analog AV in one box, processes it in real time for live applications, and injects a perfect Full HD digital TV channel onto your existing coax — with the same reliability that powers over 50,000 installations worldwide.
Recognition
The Broadcaster's Choice SDI Modulator
Built on the award-winning VeCOAX platform trusted across America since 2017 — the MICROMOD-3 SDI brings real-time broadcast-grade SDI distribution to coax. NAB Product of the Year, CE Pro Best, Best of Show winner.
How It Works
Any SDI, HDMI, or AV Source. Every TV in Your Building.
The MICROMOD-3 SDI converts your live video signal into a real digital TV channel distributed over your existing coaxial cables. No new wiring. No adapters behind every TV. No complicated setup.
- Connect any 3G/HD/SD-SDI, HDMI, or AV composite source — selectable in one box
- Distribute one live channel to unlimited TVs over the existing TV coax cables
- Set the channel number and name directly on the color display
- Scan your TVs — done. Full HD 1080p with Dolby audio on every screen
- No new cables, no adapters behind TVs — receives as a new HDTV channel
- Stack multiple units on the same coax to add more channels any time
Setup
No Computer Needed. Set Up in Minutes.
Configure every setting — input, channel name, number, format — right on the color display, with one-click preset recall for installations running multiple units.
- Built-in color display with front-panel keyboard navigation
- One-click preset recall — mode and channel ID for multi-unit installs
- No computer needed — or manage remotely via the included PC software
- Power on → Select input → Set channel → Scan TVs → Watch
Universal Compatibility
Works with Every TV Standard on Earth
One-click switch between USA QAM cable, USA ATSC air, DVB-T, ISDB-Tb, DVB-C, DTMB, and J83A/B/C — all built-in and selectable from the color display.
Every MICROMOD-3 SDI channel creates a real digital TV channel that coexists with whatever your TVs already receive. All modulation modes are included — no software to change — with full PSIP/VCT editing for ATSC/QAM and PSI/LCN editing for DVB applications.
Control
Local Color Display or Remote PC Control
Set everything on the front-panel color display, or manage the MICROMOD-3 SDI remotely from your PC with the free included Remote Management Software.
- Control locally on the color display — no computer required
- Manage remotely via PC with the free included Management Software
- Edit program names, PIDs, channel numbers, and descriptors
- One-click preset recall to set mode and ID across multiple units
Audio & Captions
Broadcast-Grade Dolby Digital Audio
Selectable AC-3 / MPEG1-L2 / AAC audio encoding with embedded SDI audio or separate RCA analog input, plus full closed-caption support.
- Dolby Digital AC-3, MPEG1-Layer2, or AAC — selectable per channel
- SDI embedded audio or separate L/R RCA analog input
- Closed Caption 608/708 via SDI, CVBS, or in-HDMI
- Crystal-clear voice, music, and effects on every screen
Installation
Three Steps. That's It.
Connect your source. Set your channel. Scan your TVs. Every screen in the building shows your channel in Full HD.
Installation is fast: plug your SDI, HDMI, or AV source into the MICROMOD-3 SDI, choose a channel number on the color display, then run a channel scan on your TVs. Every TV now shows your content in crystal-clear 1080p Full HD with Dolby Digital audio. No computer required, no IT department needed.
The VeCOAX MICROMOD-3 SDI
SDI In. Coax Out. Real-Time Perfect.
A single-channel broadcast modulator with universal SDI / HDMI / AV inputs, real-time live processing, and a built-in +45 dBmV amplifier that drives unlimited TVs up to 1500 ft. Made in USA with a 5-year warranty.
The VeCOAX MICROMOD-3 SDI distributes any SDI, HDMI, or AV video signal up to 1080p60 over coax to an unlimited number of TVs, with perfect digital quality at any distance. Built with the latest digital television technologies for totally noise-less, fan-less, non-stop 24/7 operation — the ideal, cost-effective solution to broadcast a live source to every screen for the best price on the market.
Universal Inputs
One Box. SDI, HDMI, and AV.
3G/HD/SD-SDI up to 1080p60 with embedded audio, licensed HDMI inputs for any HDMI source, and analog AV composite with L/R audio — all selectable from the display.
The MICROMOD-3 SDI is genuinely universal. Connect a broadcast SDI camera or switcher, a streaming box or computer over HDMI, or a legacy composite AV source — and switch between them right on the color display. Advanced EDID control manages any HDMI source, and a built-in HD color-bars reference signal keeps your channel alive even on input video loss.
Compatibility
Designed for Every TV — HD, 4K, and 8K
Works flawlessly on any legacy HD television as well as the latest 4K and 8K UHD displays, delivering stunning video and motion quality.
The MICROMOD-3 SDI outputs a broadcast-standard digital TV channel that every television can decode — from decade-old HD sets to the newest 8K displays — with proper color space, frame rate, and audio synchronization on every screen.
Features
Engineered for Broadcast
Professional-grade real-time SDI distribution built on the trusted VeCOAX platform.
Universal SDI / HDMI / AV Inputs
3G/HD/SD-SDI, licensed HDMI, and analog AV composite — all selectable in one box.
Real-Time Live Processing
Super-fast processing for live, real-time applications with zero perceptible delay.
Color Display + Remote Software
Set everything on the color display, or manage remotely via the free included PC software.
Built-In Color Bars Reference
HD color-bars reference signal for installation and on input video loss — channel stays alive.
MPEG-2 Broadcast Encoding
Broadcast video encoding processors for the ultimate picture quality.
+45 dBmV Output Power
Built-in amplifier drives unlimited TVs directly up to 1500 ft without re-amplifying.
MER >43 dB — Broadcast Quality
Exceeds 43 dB over the Rohde & Schwarz ETL industry reference instrument.
Full Digital RF Synthesizer
Zero harmonics & spurious, 55 dB shoulders — works adjacent to other TV channels.
PSIP / VCT & PSI / LCN Editing
Full control of program names, PIDs, channel numbers, and descriptors for ATSC/QAM and DVB.
Closed Caption 608/708
Captions via SDI embedded, CVBS composite, or in-HDMI video.
Unlimited TVs — No Per-TV Cost
Distribute to 5 TVs or 5,000+. No per-TV licensing, no monthly service fee.
Fan-Less 24/7 Operation
Noise-less EMI-shielded metal enclosure built for continuous duty. 55,000-hour MTBF.
Watch the Demo
See It In Action
Watch how the VeCOAX MICROMOD-3 SDI distributes a live SDI/HDMI/AV source over coax to every screen.
Product overview covering universal inputs, color display setup, remote PC management, TV standards, and real-world applications.
Applications
Built for Every Environment
📺
Broadcast Facilities
Inject a live SDI feed onto the in-house coax for monitoring on every screen.
🚐
OB Vans & Production
Real-time SDI distribution to client and crew monitors over a single coax.
⛪
Houses of Worship
Send the live SDI program feed to lobby, overflow, and nursery TVs.
🍺
Sports Bars
Put a live camera or game feed on every TV with broadcast-grade quality.
🏥
Hospitals
Distribute a live education or wayfinding channel to any TV.
🎓
Schools & Universities
Broadcast a campus SDI feed over existing infrastructure to classrooms.
🏢
Corporate AV
Send an all-hands or signage feed to every display from one source.
🛡️
Government
Secure, reliable live video distribution over coax.
Why PVI
Why VeCOAX MICROMOD-3 SDI Is the Best SDI Modulator
Universal inputs, real-time processing, broadcast-grade output — better reliability, better video, better build, at the best price.
VeCOAX MINIMOD 2+
Competitors
✓SDI + HDMI + AV Inputs in One Box
✕Single Input Type Only
✓Real-Time Live Processing
✕Buffered / Delayed Encoding
✓Color Display — No PC Needed
✕Requires PC for Full Setup
✓Built-In Color Bars on Signal Loss
✕Black Screen on Signal Loss
✓+45 dBmV RF Output Power
✕Low Power — Needs External Amp
✓MER >43 dB Broadcast Quality
✕Lower MER — Visible Artifacts
✓5-Year Warranty + On-Site Swap
✕1-Year Warranty
✓Made in USA
✕Rebranded import
Specifications
Technical Specifications
| Channels | 1 (stand-alone; stack multiple units on one coax for more channels) |
| Video Inputs | 3G/HD/SD-SDI (up to 1080p60, embedded audio) | HDMI (licensed, HDCP) | AV CVBS composite + L/R RCA audio — selectable |
| Input Resolution | 480i | 576i | 576p | 720p | 1080i | 1080p @ 24/29.97/50/59.94/60fps |
| Video Encoding | Broadcast MPEG-2 encoding processors |
| Output Resolution | Same as input — up to 1080p60 Full HD |
| Audio Format | Dolby Digital AC-3 | MPEG1-Layer2 | AAC selectable; SDI embedded or L/R RCA analog |
| Closed Caption | 608/708 via SDI embedded, CVBS composite, or in-HDMI |
| RF Frequency Range | 54–990 MHz — selectable down to the Hz steps |
| RF Channel Bandwidth | 6/7/8 MHz (model specific to broadcast format) |
| Channel Range | 2–83 ATSC mode | 2–158 J83B QAM | Full range for other standards | Channel or Frequency selectable |
| Modulation Standards | ATSC | J83B QAM | DVB-T | ISDB-Tb | DVB-C | DTMB | J83A | J83C |
| RF Output Power | Built-in amplifier up to +45 dBmV |
| MER (Modulation Error Ratio) | >43 dB over Rohde & Schwarz ETL reference |
| Frequency Synthesis | Full Digital Multi-RF — zero harmonics & spurious, 55 dB shoulders |
| RF Connector | F-Type, 75Ω |
| Coaxial Cable Support | RG59 | RG6 (75Ω characteristic impedance) |
| RF Transmission Distance | Up to 1500 ft+ direct — extendable with inline RF amplifiers |
| Control | Color display + free remote PC Management Software |
| Stream Editing | PSIP/VCT (ATSC/QAM) and PSI/LCN (DVB) — names, PIDs, numbers, descriptors |
| Source Management | Advanced EDID control + built-in HD color bars reference signal |
| Power Input | 100–240 VAC 50/60 Hz, 10W max (5W typical) | 12V 1A DC |
| Cooling | Fan-less / noise-less |
| Enclosure & Dimensions | EMI shielded metal — 1.5 in (L) x 5.9 in (W) x 2.5 in (H), 2 lbs |
| MTBF / Compliance | 55,000 hours · FCC Class A, IEC60065, EN61000, CE, RoHS |
| Warranty | 5-Year Limited Warranty with on-site advanced module replacement |
| Origin | Designed & Made in USA — hardware, software, and display UI are PVI's patent |
FAQ
VeCOAX MICROMOD-3 SDI — Frequently Asked Questions
What is the VeCOAX MICROMOD-3 SDI?
The VeCOAX MICROMOD-3 SDI is a single-channel broadcast RF modulator that converts 3G/HD/SD-SDI, HDMI, or analog AV into a real Full HD digital TV channel over coax. TVs tune to the output as a normal QAM, ATSC, DVB, ISDB, or DTMB channel.
What inputs does the MICROMOD-3 SDI accept?
It accepts 3G-SDI, HD-SDI, SD-SDI, licensed HDMI, and analog composite AV with L/R RCA audio. The active input is selected from the front color display or remote PC management software.
Is this an SDI to QAM modulator?
Yes. The MICROMOD-3 SDI can convert an SDI source into a QAM digital cable TV channel for distribution over coax. It also supports ATSC and international standards when the installation requires antenna-mode or worldwide TV compatibility.
Is this an SDI to ATSC modulator?
Yes. In ATSC mode, the MICROMOD-3 SDI creates a digital TV channel that compatible TVs can scan in antenna mode. This is useful for broadcast, education, worship, venue, and campus systems that use ATSC channel lineups.
How many TVs can one MICROMOD-3 SDI feed?
Unlimited. One unit creates one HD channel that can feed a few TVs or thousands of TVs over the existing coax network, depending on RF levels, splitters, cable quality, and system design.
Can I use existing coax cable?
Yes. The MICROMOD-3 SDI is made to distribute video over standard 75-ohm TV coax already installed in the building. It avoids running long SDI or HDMI cables to every display.
Do I need a computer to set it up?
No. Core setup can be done from the built-in color display, including input selection, modulation mode, channel settings, and channel ID. A computer can also be used with the included remote management software when preferred.
What TV standards does it support?
The MICROMOD-3 SDI supports major digital TV standards including ATSC, J83B QAM, DVB-T, DVB-C, ISDB-Tb, DTMB, and J83A/J83C. This lets the same platform work in many cable, antenna, and international TV systems.
Does the MICROMOD-3 SDI support 3G-SDI up to 1080p60?
Yes. It supports 3G/HD/SD-SDI video up to 1080p60 with embedded audio. It is built for professional SDI cameras, switchers, replay systems, production outputs, and broadcast equipment.
Does it also work with HDMI sources?
Yes. The MICROMOD-3 SDI includes a licensed HDMI input, so it can also modulate HDMI sources such as media players, computers, cameras, signage players, and receivers when SDI is not being used.
Does it work with analog composite AV sources?
Yes. The unit includes analog composite CVBS video and L/R RCA audio inputs. This is useful when older cameras, legacy playback devices, or older AV systems still need to be distributed as a digital TV channel.
Does the MICROMOD-3 SDI pass closed captions?
Yes. It supports 608/708 closed captions through SDI embedded caption data, composite video, or in-HDMI caption sources. This is important for broadcast, education, government, accessibility, and public-facing systems.
What audio formats are supported?
The MICROMOD-3 SDI supports selectable Dolby Digital AC-3, MPEG1-Layer2, and AAC audio encoding. Audio can come from embedded SDI audio, HDMI audio, or separate analog L/R RCA inputs.
Is the MICROMOD-3 SDI real-time for live video?
Yes. It is designed for real-time live broadcast-style distribution, making it a strong fit for cameras, production switchers, houses of worship, sports venues, schools, and monitoring systems.
Can I use it with an SDI camera or video switcher?
Yes. Connect the SDI output from a camera, production switcher, router, or replay system to the MICROMOD-3 SDI, then distribute that program feed as a digital TV channel over coax.
Can I get more than one SDI channel?
Yes. Each MICROMOD-3 SDI creates one channel. To create multiple SDI channels, install multiple units and assign each one a different RF frequency or channel number before combining them onto the same coax.
Can it coexist with cable TV or other modulator channels?
Yes. The output can be placed on an available RF channel so it can coexist with other modulated channels or an existing coax lineup. Proper channel planning prevents overlap and keeps every TV scan clean.
How do TVs find the MICROMOD-3 SDI channel?
Set the output standard and channel number, then run an auto-scan on each TV in the matching cable or antenna mode. The TV stores the MICROMOD-3 SDI output as a normal digital TV channel.
Is the MICROMOD-3 SDI good for houses of worship?
Yes. A church or worship facility can send a live SDI program feed to lobby, overflow, nursery, classroom, and office TVs over existing coax without adding streaming boxes behind each display.
Is it good for schools, campuses, and government buildings?
Yes. The MICROMOD-3 SDI is useful for campus TV channels, announcements, live events, security monitoring, training rooms, and public information channels where one source must reach many TVs reliably.
What is the difference between MICROMOD-3 SDI and MINIMOD 2+?
MICROMOD-3 SDI is the better choice when you need SDI, HDMI, and analog AV inputs in one broadcast-style modulator. MINIMOD 2+ is focused on HDMI-to-RF distribution for standard HD HDMI sources.
What warranty and support come with it?
The MICROMOD-3 SDI includes a 5-year manufacturer warranty and free unlimited technical support for the life of the product. It is designed and made in USA by Pro Video Instruments for professional 24/7 video distribution.
Accessories
Complete Your SDI Distribution Setup
Everything you need to combine, rack-mount, and expand your distribution system.
Coax Combiner / Splitter (13-Port)
Combine your SDI channel with other modulators onto one coax.
$105.00$95.00You save $10.00
1RU Rack Panel (4-Slot)
Professional 19-inch rack mounting for your VeCOAX modulators.
$105.00$99.00You save $6.00
MINIMOD-4K Ultra HD
Need 4K HDMI? Step up to the Ultra HD modulator.
$1,950.00$1,495.00You save $455.00
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Free shipping over $500 · 5-year warranty · Free unlimited tech support · Made in USA