How to Build the Best RV Internet System for Zero Downtime! (Internet 6.0)

1 month ago
Chad

I’ve been refining our mobile internet setup since 2017, and what we’ve got running in our new Grand Design Momentum 395MT is essentially version 6.0. Every version has been about the same goal: ultimate flexibility, no matter where we park. Here’s the hardware, the install, and the data plans that make it work — plus what I’d recommend if you don’t need anything nearly this complicated.

The Hardware Behind It

The core of the system is the Peplink MAX BR2 Pro, a router I loved so much I moved it over from our last RV. It has built-in dual 5G cellular modems, so I can run two cellular connections at once. It also has four LAN ports and two WAN ports. One WAN port uplinks to Starlink, and the other is there in case I want to add something else down the road. The router also connects to campground Wi-Fi when it’s available.

The important part is SpeedFusion, Peplink’s technology for binding connections together. Right now that gives me three simultaneous connections — two cellular plus Starlink — or four when there’s usable campground Wi-Fi. SpeedFusion turns those separate connections into one resilient pipe. If one drops, the whole connection doesn’t go down, which matters a lot when you’re working remotely or on a video call.

That router connects directly to a Parsec Great Pyrenees 11-in-1 antenna mounted on the roof. It packs in eight cellular antennas (four per modem, since 5G needs four to work), two Wi-Fi antennas, and one GPS antenna, all in one low-profile housing. Indoor Wi-Fi comes from two Peplink AP AX1 Lite access points, one in the cabinet and one up front (for wifi access in the truck while towing).

We also brought over our Starlink Gen 2 High-Performance dish from our last RV. It’s the largest antenna Starlink makes, with a wider field of view and a better shot at holding a connection through partial tree cover or other obstructions.

Rounding out the tech cabinet: an 8-port NETGEAR switch, since our access points need Power over Ethernet and the router’s four built-in LAN ports weren’t enough on their own. There’s also a Synology NAS with five disks and 30TB of storage, where all our working video files live, plus an uninterruptible power supply to keep everything running clean through brief power interruptions. All of the Peplink and Starlink gear came from MobileMustHave, who we’ve worked with for years. If you’re not sure what any of this means, they offer free consultations to help you figure out what you actually need.

Getting It Onto the Roof

Both the Parsec antenna and the Starlink dish needed to go on the roof. The cleanest way to manage that is with a junction box. I’ve done this on our last two RVs, though this time I went with a lower-profile 12x12x4 box. It’s sized perfectly for the Parsec antenna, gives me room for extra cabling, and provides a clean pass-through point for the Starlink cable.

Before drilling anything, I got everything prepped: cutting the antenna hole in the box, pre-drilling mounting holes, and adhering gasket to the bottom. That last part matters. This RV has a single-piece fiberglass roof with no seams and no TPO, so everything up there is sealed with automotive-grade gaskets instead of the lap sealant I’ve used on previous RVs.

Figuring out where to drill took more thought than the drilling itself. I wanted the router in a particular cabinet, mainly because it lines up with a built-in Starlink pass-through, something that now comes standard on Momentum models. That cabinet also sits next to hardwired gigabit Ethernet ports running to our office in back. (Grand Design added those runs for us as a favor; it’s not something you can order.)

From there, I measured from fixed reference points inside, like a roof vent and a wall, to the cabinet. I took those same measurements up on the roof to narrow down a clear area, avoiding the gray tank vent, a separate roof-circulation vent, and the ducting that runs through the roof. I drilled a small pilot hole from below first to check for framing before committing to the full hole-saw cut. The hole came out a little closer to an edge than planned, but with some minor adjustment it lined up fine.

Building In Real Flexibility

Rather than running the Starlink cable straight through the junction box and sealing it in place, which is what I did on past RVs, I installed a waterproof Ethernet junction port instead. That one decision is what makes the rest of this flexible.

Cutting the Starlink cable and adding standard RJ-45 ends turned out to be trickier than expected. Starlink’s cable is Ethernet at its core, but the wires inside are a noticeably heavier gauge than standard Cat 6. They don’t line up the same way, and they need different connectors with built-in wire guides. Once I had the right parts, though, crimping them was no different than any other cable.

The result is a fully modular connection: a short cable on the dish side, a short cable on the router side, and a waterproof junction between them. That means I can disconnect the Starlink dish from the roof mount entirely. Using any length (realistically up to 75′) of standard Ethernet cable and a couple of waterproof junctions, I can relocate it anywhere: on the ground, on a picnic table 50 feet away, wherever actually has a clear view of the sky. No cutting, no re-wiring, no trouble.

Our Data Plans

Starlink: The Primary Connection

Starlink is our primary connection, and we’re on the Roam Unlimited plan, around $175/month. We use far more data than the lower tiers allow, so unlimited is the only option that makes sense for us. It covers us the vast majority of the time.

Why We Still Carry Cellular

We keep two cellular plans active in the router’s dual modems anyway, for a few reasons. Dense tree cover occasionally blocks Starlink entirely. SpeedFusion bonding gives us resilience during livestreams or important calls. Cellular also gives us extra upload bandwidth. Starlink’s upload speed usually tops out around 10–20 Mbps, which is fine for most people but not enough for us. Everything we film gets copied to our NAS and then uploaded to Dropbox, and our upload volume has topped 10 terabytes over just the past few months.

Our Two Cellular Plans

We’ve settled on two carriers after trying quite a few combinations. Our always-on connection is an unlimited T-Mobile plan through the Calyx Institute. It runs about $500 a year, roughly $41/month, and stays active full time since it’s billed annually. The second is an unlimited plan on Verizon through MobileMustHave, running about $149/month. We can activate or pause that one month to month, with no contract.

A Simpler (and Cheaper) Setup for Most RVers

Everything above is a lot more system than most people need. If you want the ability to combine Starlink and cellular without going this deep, my top recommendation is the Peplink MAX BR1. It’s essentially a scaled-down version of our router, with one WAN port and one embedded cellular modem, at a much lower price.

You can also save significantly by skipping the high-performance Starlink dish. The newer standard dishes can be mounted flat with some basic hardware, and they cost quite a bit less. If your needs are even simpler than that, mostly streaming, and you don’t mind losing signal occasionally under trees, a standard Starlink dish by itself is a great option. Many newer RVs, including this one, now come with a built-in Starlink pass-through port and even a mount for the standard router. You can plug in the wall port, set the antenna outside when you make camp, and stream all day.

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