If your cottage and office share the same electrical utility's power meter, perhaps you might read up on and try Power Line Adapters. Here's one Linksys sells https://www.linksys.com/us/p/P-PLWK400/

The range extender should be in-between where the signal originates from and where you wish to use it. If you know baseball, think of it as a cutoff player for a throw from the outfield - they're designed to receive a weakened signal from the router and then resend a strong signal onward to where the devices are.

Put the router in the work building as close as you can to the cottage. Put the range extender in the cottage, as close as possible to the work building, both with as few obstacles in the signal path as possible. Having either or both near a window, or placed so that the signal passes through at least one window, is good. That should improve your experience.

If the internet connection itself doesn't have enough bandwidth (some call that "speed") for streaming video, this two legged wifi path won't improve it any. If it's fast enough, this should work.

Thank you guys. I read about Powerline adapters. Both building have same meter and fusebox. Cottage has own circuit in fusebox. I read for power line adapters to work best they should be on same circuit, if there not might be to slow to watch movies is this true ? i see on ebay outdoor WIFI antennae some claim up to a mile..

what about something like this ? https://www.ebay.com/itm/802-11N-Outdoor-Indoor-WIFI-Range-Repeater-Receiver-Antenna-Router-Combo-2-4-GHz/332140426928?hash=item4d551cb6b0:g:fvgAAOSwRLZT-1CO

With some moving around (as others suggest too), you should be able to get what you already have it to work. Failing that, I'd go for the powerline approach and use the extender as a WAP, if it has that mode. If so, use an old router wired to the powerline wall wart (with DHCP turned off) to supply a wifi signal.

Buy the powerline equipment from a seller that will allow you to return it - they sometimes don't work, as a function of the physical wiring characteristics of the structure(s) where use is intended. Good luck.

I dont know the layout of your office / cottage but sounds like I might be trying to put a directional antenna or two on the Verizon wifi router and moving that repeater over into the cottage. And moving the router maybe infront of window or wooden wall facing the cottage.

Thank you Mikie is there a direction antenna you recommended ? Buildings are not that far apart could hit with thrown rock

I was happier with a 9db flat panel type antenna one time here than whats called a yagi 13db for shooting to a separated outbuildings garage/apt network camera's and occasional laptop. That structure had pretty much full coverage at full strength with one little flatpanel aimed at it through a window. Now it has its own network cable to an old wifi router.

http://www.tp-link.com/ca/products/details/cat-5691_TL-ANT2414A.html#overview < like this 14db, they also have a smaller one and some other antenna's there. You should have pretty good signal off the back of that type antenna too, just a good bit wider than the fronts directional.

Mikie Thank you just ordered from amazon

Antenna probably is that fitting you mention, I'm not familiar with that particular modem. Surprised it doesn't have an antenna. You're on Verizon DSL ?

I use Verizon DSL and have a different modem/router - bought a couple of the Actiontec Verizon branded off ebay for 10 or 15 dollars each when last one died.

Not sure about DSL will find phone bill. modem under a year old. Have 2 phone lines and internet from it. Is a modem same thing as router?

The modem handles incoming and outgoing signal translation on the signal source (whether the phone line for DSL, cable from cable company, etc.). The router is the mail sorting facility for the home network, it delivers incoming signals to the intended recipient (device) and sends outbound signals to the modem for onward travel. It is also the equipment that produces wifi signals, that it sends and receives. They also have sockets to use wired connections to talk to network devices when desired.

When using a "box" supplied by the internet provider, it's usually one that contains both a modem and router together. It's also possible to use a modem and router of your own, purchased in the normal way, that works too. That's what I've long done, it's typically cheaper and the equipment often has better performance and flexibility in choosing features.

If what you have works, I wouldn't necessarily change it unless you're unable to solve your sharing between buildings problem.

Looks like a Verizon "Quantum" gateway (combo router/modem) and I don't believe it has a provision for an external antenna.

The plug on the back of the box, between the black and white plug may be a coax plug for a television. I have an AT&T box that looks very similar to the one pictured.

Mike Kaiser if it doesn't have removable external antenna does that mean I can t use antenna I just bought?

Mike Kaiser if it doesn't have removable external antenna does that mean I can t use antenna I just bought?

I'm not an expert but the connector on the back of your gateway (modem/router) is an output for television coax cable.

Have you considered the possibility of running CAT5/6 cable between your buildings? They do make a version for outdoor/direct burial use. Because it's low voltage there are no rules for burial depth like electric cable.

Would have to cross a blacktop driveway. Landlord has a dump truck that is pretty tall I can not block overhead with wires

If you have an old unused wifi router, you could cable that up to the wall or window closest to your cottage & put your new antenna on it after configuring it as a simple access point.

In general its not a good idea to run a network cable between structures. Each building has its own electrical grounding systems and its really easy to cause problems & cook electronics, or maybe even kill somebody.

Dont have a old wifi router but can buy one

I just went over my bill and am surprised I am renting Fios Quantum gateway router and fios network extender for almost $200 a year. If I am to buy my own router which one would be best with antenna I bought ?