Amazon.com Return Policy: You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here
Would you like to tell us about a lower price?
Alfa 9dBi WiFi Booster SMA Omni-Directional High-Gain Screw-On Swivel Antenna Network Adapters - Also Works for 3DR Solo Drone, DJI Phantom 3 Drone, Yuneec Typhoon H ST16 Controller
Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.
Where did you see a lower price?
Date of the price:
Please select province
Date of the price:
Please sign in to provide feedback.
Replacing your WiFi antenna with This Alfa Antenna will significantly increase the range and strength of your WiFi signal. Our quality built omni-directional antenna is a direct replacement for the antenna that comes standard with your router, access point, VOIP device, or PCI card. Because it is omni-directional, no aiming is equired - it can send and receive WiFi in all directions. This Alfa antenna is stronger then the less powerful booster antennas offered by major manufacturers (Linksys HGA7S and HGA7T.) Installation is very easy - just twist off the factory antenna and twist on our Booster Antenna and you'll experience an instant jump in.
Works With all of the Models Below and With many other routers as well
RT-AC3200, Wireless-AC3200, Asus RT-N12 D1, RT-AC68U, RT-N66U, RT-N12,
TP-Link Archer C7, AC1900, AC3150
There was a problem filtering reviews right now. Please try again later.
4.0 out of 5 stars
Long black thingy that soaks up internet magic
Reviewed in the United States ?? on December 4, 2012
I, being a Clear internet user, was looking for an external antenna to attach to the back of my modem to attempt at getting a constant signal. After about an hour of looking, I refused to look at straight black lines for about a day. When I came back, there was two antennas(is that even the plural form?) in the finals for me. This one, and one for about $5 more. I assumed the "dbi's" counted somewhere, and since this one had two more I purchased it, hoping that the extra two would allow me to pick up the signal from passing alien spaceships and be able to get internet from them. I'm sure they have like 49,000G internet by now, rendering this measly 4G laughable. A few days later it came in a bigger box than I was expecting. This antenna is longer than a football field, I was barely able to fit it through the door. It's so long that a few hours after having it upright attached to the modem, the weight of itself is already making the swivel joint... thing... loose. The thing is built well, but the sheer weight of it screws up the build quality. As I write this review, I've resorted to putting the antenna in the "halfway" position, at a 45 degree angle. It seems to be holding well so far. I might need to duct tape it in place. Those hinge things never stay good for long anyway.
Anyway, it does work. Kinda. I'm sure it varies person to person. Before, when I was using the built-in antenna of the Clear modem, I was able to get two bars, occasionally three for half a second. After putting this thing on and adjusting it, I'm at a constant three bars, occasionally dropping to two for half a second. So, I mean, it went up to at least a C average. If bar signal were to be given a grade. I would give it a D+ at best at gym class, though. Because of that hinge. It would never be able to do more than 10 push-ups.
One person found this helpful
3.0 out of 5 stars
A long, but hopefully helpful review.
Reviewed in the United States ?? on March 12, 2016
This is a review I've been struggling with posting. The thing is, I have one piece of solid data, and another piece of data that is strictly something I observed, and couldn't measure. So here goes. I bought these antenna to try to boost the range on my 2.4Ghz WiFi network so it could use it in my garage, which is separate from my house. It's really, truly, at the very outside edge of usable range from where my wireless router is located. Prior to purchasing and installing these on my router, speeds were slow, and signal would frequently drop out completely. Here are some numbers gathered using a MacBook Pro, with the built in WiFi diagnostic tool. The router GenWI2 is the one that the antenna were added to. The other is a network extender included for, let's call it signal quality reference:
Inside, old ant. 'GenWi2' rssi=-47, 'GenWi2_EXT' rssi=-75,
Outside, old ant 'GenWi2' rssi=-77, 'GenWi2_EXT' rssi=-69,
Notice, all these numbers are negative, and represent signal strength. The closer to zero the number, the stronger the signal. As you can see, inside (still a couple rooms away from the router) the signal was pretty good. Outside, it was pretty slow, but you could still get about 15Mbps out of it at times when it was working well. So, I bought the new antenna, and installed them, and ran the same check again, from the EXACT SAME LOCATIONS inside and out. The numbers follow.
Inside new ant. 'GenWi2' rssi=-41, 'GenWi2_EXT' rssi=-74,
Outside, new ant. 'GenWi2' rssi=-77, 'GenWi2_EXT' rssi=-72,
A look at the numbers will, at first, make it look like it didn't have much effect on the outside numbers, which are the important ones for my purposes. But if you look, you'll notice the signal condition was worse - with the GenWi2_EXT number 3db lower, while the GenWi2 number stayed the same. Is this an earth shattering difference? No, it isn't. But I observed the signal no longer drops out entirely, meaning the signal is now completely usable (if still slow) in the garage at all times. So why 3 stars and not 5? Well, it's not as big a jump as I had hoped to see, honestly. Why 3 stars and not 1? Because it DID actually work, and let's face it, they aren't very expensive, so, it works, it didn't cost a lot to test, but it's not stunning.
23 people found this helpful
3.0 out of 5 stars
Didn't change anything
Reviewed in the United States ?? on February 17, 2022
I put three of these on a wifi adapter antenna base and didn't gain or lose signal compared to the stock antennas in the same orientations. Positioning the base elsewhere did more for signal strength. One thing I found is that the cable for the base being less hidden behind other objects helps a lot, which means signal strength is impacted by both the antennas and the actual cable connecting to the PCIe card. I was able to gain 5-10dbi just by putting the base in a good position, even if just inches away from the previous position.
4.0 out of 5 stars
Reviewed in the United States ?? on December 16, 2010
Well, I had some credit from the cell phone trade-in program Amazon offers, so I thought I'd buy something I didn't really "need". This antenna was for my Verizon FiOS Actiontec MI-424 router. Naturally, the antenna went right on, and there were no problems.
It's hard to tell how much extra juice I get from this. You know, you WANT to think you're getting more, because you've exchanged the little 5 inch antenna with this much longer antenna. But, being totally honest about it, I would say I get 2-4 dB increased strength. I get maybe half to one bar more strength on my cell phone wifi, and the back porch which was just about out of range of the laptop if I sat down now seems to be "in the zone" but barely.
Seems like this antenna helps with "borderline situations", but it's not going to do much for a "bad situation". If you have a borderline situation (e.g., your wireless works if you're in a particular room *IF* you sit on one particular part of the couch, but not the other), then try it. But in terms of getting service to a part of your house or immediate neighborhood in which you're well out of range? Forget it.
Plus, this is really all you ought to expect. After all, you're just replacing a stock antenna with a 9dBi omni upgrade. All you're SUPPOSED to get is another half bar or bar. :) And that's what it is.
One person found this helpful
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME