Shop

Deals
Deal checker
Black Friday
Buying guides
Brands
Stores

Travel

Flight deals
Hotel deals

Company

Research
Press
deal.ai apps

Black Friday 2026

Walmart
Best Buy
Target
TVs
Laptops
Headphones
Apple
Gaming
Vacuums
Kitchen
Toys
Smartwatches
Tablets
Furniture
Mattresses

© Deal.ai Inc.

Deal.ai › King

King

King Extend Go Portable Cell Booster kx3000

King Extend Go Portable Cell Booster kx3000

3.3(6 ratings)

Best price now

$299.91at Camping WorldObserved at 1:41 PM

56% under what the other stores charge

Compared across 13 stores. Prices are checked against each store and labelled with when.

Visit Camping World

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Ask our agent about this product

Enter to send, Shift+Enter for a new line

Price facts

Lowest price today: $299.91 at Camping World (checked Nov 9, 2026).
Checked at 13 stores.

Our take on the King Extend Go Portable Cell Booster kx3000

The King Extend Go kx3000 is a portable cell signal booster that promises to extend coverage to towers up to 74% farther, with a 50 dB gain and 5G readiness. It comes with multiple antennas and a mounting bracket for roof, pole, or ladder installation. Weighing 11.48 lb and measuring 20.5 x 11 x 4 inches, it is designed to be moved between locations. It suits RV owners, campers, and remote workers who need better reception in weak-signal areas. Compared with fixed home boosters, it is more portable but may require more careful aiming and setup.

Best forRV and camper ownersRemote workers in weak-signal areasOutdoor enthusiastsTemporary setups

Pros

Portable form factor with mounting bracket
50 dB gain for stronger signal
5G ready for future networks
Multiple antennas for better reception
Extends tower range by up to 74%

Cons

Heavy at 11.48 lb for true portability
Requires 12V power supply, limiting outlet-free use
Mounting hardware may need extra purchase
Setup can be complex for non-technical users

King Extend Go Portable Cell Booster kx3000 prices at every store

Camping WorldNew
In stock
$299.91Observed at 1:41 PM
Visit Camping World
Nomadic Supply CompanyNew
In stock
$499.95Observed at 1:41 PM
Visit Nomadic Supply Company
NVN MarineNew
In stock
$510.99Observed at 1:41 PM
Visit NVN Marine
Home Essentials DirectNew
In stock
$529.75Observed at 1:41 PM
Visit Home Essentials Direct
Opentip.comNew
In stock
$545.11Observed at 1:41 PM
Visit Opentip.com
PPL Motor HomesNew
In stock
$679.99Observed at 1:41 PM
Visit PPL Motor Homes
Tweetys RV and Truck AccessoriesNew
In stock
$719.99Observed at 1:41 PM
Visit Tweetys RV and Truck Accessories
camperid.comNew
In stock
$729.99Observed at 1:41 PM
Visit camperid.com
RV & Auto PartsNew
In stock
$729.99Observed at 1:41 PM
Visit RV & Auto Parts
Dyers RV and TrailerNew
In stock
$766.49Observed at 1:41 PM
Visit Dyers RV and Trailer
Shell Lumber and HardwareNew
In stock
$780.59Observed at 1:41 PM
Visit Shell Lumber and Hardware
PartsWarehouse.comNew
In stock
$901.90Observed at 1:41 PM
Visit PartsWarehouse.com
eBayNew
Availability unknownSold by rue_4681 (0% positive, 0 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$375.59+ $10.15 shippingObserved at 1:41 PM
Visit eBay
eBayOpen box
Availability unknownSold by griegophoto1 (0% positive, 21 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
$600.00+ $30.50 shippingObserved at 1:41 PM
Visit eBay

Also available at

eBayCheck price at eBay

Store links may earn us a commission.

King Extend Go Portable Cell Booster kx3000 price history

Lowest price we've seen: $299.91 on Nov 9 at Camping World. Tracked across 13 stores since Nov 9.

Specifications

Maximum Range: Reaches towers up to 74% farther
Coverage Area: Extended cell phone coverage reaches towers up to 74% farther
Signal Gain: 50 Decibel
Cellular: Yes
Supported Standards: 5G Ready
Wireless Connectivity: Yes
Network Type: Cellular
Type: Cell Booster
Color: Orange
Form Factor: Portable
Mounting: Roof/ Pole/ Ladder Mount
Dimensions: 52.07 x 27.94 x 10.16 cm
Height: 4 in
Length: 20.5 in
Weight: 11.48 lb
Width: 11 in
Antenna Type: Multiple antennas
Number Of Antennas: Multiple
Typical Users: Multiple users
Solution For: Poor cell reception
Power Source: 12V power supply
Input Voltage: 12V

Questions and answers

Does the King Extend Go kx3000 work with all carriers?: It supports major cellular networks and is 5G ready, but check the frequency bands of your carrier to ensure compatibility.
How much area does it cover?: Coverage depends on outside signal strength and antenna placement. It is designed for multiple users in a localized area, such as an RV or small building.
Is it weatherproof for permanent outdoor mounting?: The unit is not specified as weatherproof, so for permanent outdoor installation, it should be protected from the elements.
What is included in the box?: The package includes the booster unit, multiple antennas, a mounting bracket, and a 12V power supply. Cables may be included; check the listing for details.
Can I use it while moving, like in a car?: It is portable, but it requires a 12V power source and proper antenna placement. Using it while moving may require securing the antennas and ensuring stable power.
Where is the King Extend Go Portable Cell Booster kx3000 cheapest?: At Camping World, for $299.91, 56% under what the other stores charge, as of our latest check.
What do buyers say about the King Extend Go Portable Cell Booster kx3000?: Rated 3.3 out of 5 from 6 ratings.
Where can I buy the King Extend Go Portable Cell Booster kx3000?: 13 stores we checked sell it, including eBay, Camping World, Nomadic Supply Company, NVN Marine, Home Essentials Direct.

Stores we've priced the King Extend Go Portable Cell Booster kx3000 at

Camping World deals and prices
Opentip.com deals and prices