LiftMaster41A3504 Antenna Extension Kit Residential Garage Door Openers

One negative is the length of the coax cable included. From my opener, I went straight out to the front of my garage and barely had enough cable for the job. A little more cable would have been nice, as a little excess could always be coiled up.The HomeLink door opener in both of my vehicles worked poorly. I had to be very close to the door for it to open. I tried all the "free" fixes I could find but had no luck. This extension kit worked great. On the end of the coax that should connect to the garage door opener is a coupling similar to a standard coax connection, but different. It probably connects fine to a Liftmaster opener, but not mine.I cut the end off and peeled the rubber sheath back about 3 inches, being careful not to cut the copper braid just below the sheath. I then soldered the solid coax wire to my garage door antenna wire. I twisted the braid to form a somewhat single wire to which I soldered on a spade connector, and connected the spade connector to a ground.I had previously tried just using speaker wire and extending the antenna lead to the front of my garage and it did not work at all. It is possible that the ground made the difference. It essentially bleeds off interference from the coax, and I saw a YouTube video stating that grounding the coax is very important. I do have LED lights in the garage and they are known to cause interference with garage door openers.At any rate all is well now. I can now open my garage from the far side of my neighbors property!!

My $3000 commercial gate opener came with an antenna that was about 4 inches long. We noticed right away that we were often right outside of the gate before the remote and opener would connect. I bought this antenna, hoping that I could extend the range, and I was not disappointed. I went from about 30 feet maximum distance to over 1000 feet in either direction in my alley. It’s hard to see in the picture I uploaded, but I ended up routing the cable up the pole and onto the backside of the solar array. So I went from. A 4 inch long antenna to over 12 feet and it now extends above the fence and gate.It works perfectly.

Like other reviewers, the range on my Craftsman garage door opener (which is manufactured by Liftmaster / Chamberlain) got steadily shorter, to the point where I had to almost be touching the door with my vehicle and often requiring multiple attempts to finally open.Before starting, TURN OFF THE POWER TO THE GARAGE DOOR OPENER! I decided on the method of installation for the Liftmaster 41A3504 kit as suggested by several other reviewers, in that a coax grounding block (not included) is used in place of cutting off one of the ends (F-connectors) of the supplied 15 foot coax cable, as is indicated in the included installation instructions. This prevents you from having to mutilate something you just bought for nearly $30, as well as providing a much cleaner installation! I decide to locate the antenna and its bracket inside the soffit (or eave) above my garage door, by removing one of the aluminum soffit vents in the desired location. Completely outside would probably have been best, but this location still placed the antenna outside of the garage and the much of the possible interference, but still out of immediate sight and weather concerns. I then connected the F-connector on the one end of the supplied coax to the antenna / bracket and ran the cable into the garage attic to just above my garage door opener. At that point I mounted the coax grounding block on a ceiling joist and attached the remaining F-connector on the supplied coax cable to one side of the grounding block. Then I ran a length of 14 gauge solid copper wire from the block's grounding screw through a small hole in the ceiling above the opener motor unit and attached it to the opener's grounded metal chassis using a spade lug. Next I obtained a (not included) section of coax cable without any connectors which was long enough to reach from the grounding block to the opener's circuit board and then crimped an F-connector (again, not supplied) on one end. If you do not have the tools to place an F-connector onto a cable, you can also just buy an appropriately long prefabricated coax cable at a big box or electronics store and simply cut the connector off of one end only. Attach the F-connector of that cable (or the one you made yourself) to the other connection on the grounding block. On the other (non-connector) end of cable strip off all insulation to expose a short length of the center copper conductor after having first run the cable through another small hole in the ceiling above the opener. The installation instructions state to attach that stripped end to a stripped length of the opener antenna wire and wrap with electrical tape. In my case, I chose to remove the printed circuit board from the opener, de-solder the original opener antenna from the board and then solder the stripped end of the coax cable directly to the circuit board in the place vacated by the removed opener antenna. This makes for the cleanest and neatest installation with less chance of interference, but obviously requires much more work, as well as raising the possibility (if not done carefully) of damaging the circuit board. Either method will work, of course. I replaced the circuit board in the opener, reconnected all wiring which had been disconnected and turned the power to the opener back on.After all the work was said and done, the range on my opener did improve, mostly to the distance it had been when originally installed 15 years ago (around 40 feet). I had hoped, given this is a more substantial antenna than the original on the opener, that the range would be even better than what was achieved. But I am still happy with the end result, in that I can once again open my garage door from the street!

IT DIDNT EXTEND MY USUAGE AREA AT ALL

Metal building/metal door/commercial operator. I needed to hold the opener at the door gap to open the door. With the external antenna the range is about 30 feet. Fine for my needs. I required a right angle cable fitting between the provided adapter and cable in order to refit the cover.

My shed is all metal. The garage doors would not open at all from out side. Put this in and I can now open the doors from several hundred feet away. I will be ordering another for another door I have

I bought two external antenna kits for two separate garage doors. They both operate from a greater distance then I expected.Very pleased

My garage door opener only worked when I was in the driveway.I bought this Range Extender hoping it would help out. I worked great. I have about 500 feet of range now. It was fairly simple to install.I didn't do what others have done and solder anything to the circuit board.I bought the coaxial grounding block and mounted it to the metal support that holds the garage door opener motor. To install the antenna, I stripped some coaxial cable that I had to the copper core and used a wiring cap to splice it to the antenna. I bought some coaxial mounting clips and just went down the ceiling of the garage to the front of the door.Everything was fairly simple and straight forward