KING, the company behind KING and KING Connect RV antennas and signal boosters, ceased operations in 2025. The website is offline, and RV owners widely report that phone support and warranty service are no longer available. If there's a KING Extend booster on your rig, here's the part nobody told you. Your booster keeps right on working, and it was built by Wilson Electronics, the same manufacturer behind weBoost, the whole time. That means replacement antennas still exist, and so does a clean upgrade path from the company that actually made your hardware. This guide covers both, and if a part has already failed, you can jump straight to the replacement antenna options or the KING to weBoost map.
Key Takeaways
- KING (Electronic Controlled Systems) ceased operations in 2025, and owners report its support lines and warranty service have gone quiet.
- Your KING booster doesn't need KING to exist. It keeps boosting until a component fails.
- All three KING Extend boosters were rebadged Wilson hardware. The original Extend was a weBoost Drive 4G-X, and the Extend Pro and Extend Go were built on the weBoost Drive Reach platform.
- The antennas in KING's boxes were weBoost antennas, so correctly matched replacements are still sold today.
- When a swap stops making sense, the current weBoost RV lineup is the natural upgrade, with a 3-year manufacturer warranty behind it.
What Happened to KING?
KING, formally Electronic Controlled Systems of Bloomington, Minnesota, shut its doors in 2025. There was no press release and no wind-down plan for customers, the company simply stopped operating. Its website now sits on a parked domain, callers report the phone lines go to a full voicemail box, and the Better Business Bureau lists an F rating for complaints going unanswered. Owners report product registration is offline and warranty claims go unanswered.
We started noticing the fallout before we went looking for the story, as KING owners kept landing on our site searching for replacement antennas and alternatives. If that's how you got here, the situation is what you suspected. The company is gone, and nobody is coming to fix your unit under warranty.
One clarification is worth making before we go further, since KING was best known for satellite TV antennas. This guide covers KING's cellular signal boosters, the Extend line. If you own a KING satellite antenna or Wi-Fi product, the company's closure affects you too, but the replacement path below is for the cellular gear.
Who Actually Built Your KING Booster
Here's the detail that changes everything about being a stranded KING owner. KING never manufactured its cellular boosters. Every KING Extend was a licensed, rebadged Wilson Electronics unit, and that's not marketing inference, it's in the public record. Look up the original KING Extend's FCC ID, PWO460021, and the grantee listed is Wilson Electronics, LLC. The manual even says "powered by weBoost" on the cover, and KING's own warranty text names Wilson alongside KING.
The map looks like this. The original KING Extend (KX1000) was the weBoost Drive 4G-X. The KING Extend Pro (KX2000) and Extend Go (KX3000) were built on the weBoost Drive Reach platform, the same 50 dB in-motion booster family weBoost sells today. Even the antennas that shipped in KING's boxes were weBoost's own, an omnidirectional outside antenna and a compact inside antenna, wearing KING packaging.
So you're not shopping for a workaround from a rival brand. You're going to the source.
Will Your KING Booster Keep Working?
Yes. A signal booster is standalone hardware with no subscription, no activation server, and no phone-home requirement. Yours will keep receiving signal at the outside antenna, boosting it, and broadcasting it inside your rig exactly as it did the day KING closed, and it will keep doing that until a component physically fails.
What you've lost is everything around the hardware. There's no warranty service, no support line, and no KING-branded replacement parts. In practice, the part that fails first on an RV booster is usually an antenna or its cable, because they live outside in the sun, wind, and road vibration. Which brings us to the useful part.
Replacement Antennas for KING Extend Boosters
Because KING's boosters were Wilson units, the weBoost retail antenna line matches them, generation for generation. The one thing you have to get right is the connector, because the two KING generations use different, non-interchangeable connector families.
One honest caveat comes first. KING's manuals never published a list of approved replacement antenna part numbers, so nobody can point you to an officially named swap. What we can tell you is which currently sold weBoost antennas match each generation's connector and specs, and that the antennas KING shipped were weBoost antennas to begin with. Before ordering anything, look at the connector on your existing antenna's cable end and confirm it matches. It's a ten-second check that prevents nearly every mistake.
| Your KING Booster | Connector | Outside Antenna Options | Inside Antenna Option |
|---|---|---|---|
| KING Extend (KX1000) | SMA | Drive RV Outside Antenna (roof mount, adapter included) or Drive Magnetic in SMA | Mini-Panel Antenna |
| KING Extend Pro (KX2000) | SMB | Drive RV Outside Antenna (SMB adapter included) or Drive Magnetic in SMB | In-Vehicle Server Antenna, SMB |
| KING Extend Go (KX3000) | Confirm on your cable end | Same Drive Reach platform as the Pro. Match the connector you find, the Drive Magnetic comes in both | In-Vehicle Server Antenna, SMB, or Mini-Panel Antenna (SMA) after confirming your connector |
The Drive RV Outside Antenna is the one to know about. It's the tall roof-mount antenna built for RV installs, it ships with the adapter that lets it connect to either KING generation, and it's the closest thing to a factory replacement a KING owner can buy. The magnetic antennas are the budget path, built for cars and trucks rather than tall rigs, and they work fine when mounting height isn't your constraint. You can browse the full antenna lineup if your situation calls for something different.
When a Replacement Antenna Stops Making Sense
Here's our honest rule of thumb, and we'd give you the same one over the phone. One antenna swap on a working KING booster is money well spent. Anything past that, a failed amplifier, a second component, creeping performance problems, means you're investing in an aging 50 dB platform with no warranty behind it, and that money belongs in a current system instead.
The upgrade path depends on how you travel, and it leads to the same manufacturer that built your KING unit.
If you're mostly on the move, the weBoost Drive Reach RV II is the current RV product on the very platform your Extend Pro or Go was built on, boosting at up to 50 dB, the maximum the FCC allows for in-motion use. It works while driving and parked, handles multiple devices at once, and installs permanently so you set it up exactly once.
If you park for days at a time and live on the connection while you're there, the weBoost Destination RV is the strongest parked option in weBoost's RV lineup. It boosts at up to 65 dB, the maximum the FCC allows for stationary RV use, using a directional antenna on a 24 ft telescoping pole that you aim at the strongest tower at each site, and our guide to finding your closest cell tower makes the aiming part painless. It's parked-use only, and in weak-signal campgrounds it's the difference-maker.
Both carry weBoost's 3-year manufacturer warranty, which is worth pausing on, since it's exactly the thing KING owners just learned the value of. One housekeeping note applies to any new booster. The FCC requires registering it with your wireless provider before use, and our carrier registration page walks through each provider's form.
KING to weBoost: The Map
| Your KING Unit | What It Was Underneath | Your Path Today |
|---|---|---|
| KING Extend (KX1000) | weBoost Drive 4G-X | Replacement antenna in SMA, or upgrade to a current system |
| KING Extend Pro (KX2000) | weBoost Drive Reach platform | Replacement antenna in SMB, or the Drive Reach RV II, its direct successor |
| KING Extend Go (KX3000) | weBoost Drive Reach platform, portable configuration | Confirm your connector for a swap, or the Drive Reach RV II |
What to Do Next
If your KING booster is working, keep running it, and bookmark the antenna table above for the day something outside gives out. If a part has already failed, match your connector and order the swap, or call us before you spend anything. We'll tell you honestly whether an antenna swap or a new system is the right money, and because your KING unit was Wilson hardware, we know exactly what's under the hood. Reach us at 1-888-974-8237, Monday through Friday, 9am to 5pm ET. Orders $99 and up ship free, and everything carries our 90-day return policy.