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Internet Wi-Fi extender

connects to a (weak) public AP that has or does not have a Captive portal, and gives an Internet connection to the camper's router


Main components:
- Windows 7/8.1/10 laptop,
- USB wireless Wi-Fi adapter (dual band preferred),
- camper’s router and AP.

Most of times this cases is with Internet while camping living:

  • the camper's crew located in the camper that stand on a camping lot. A public Internet Wi-Fi is only in camping's lobby and not accessible for the camper's crew gadgets.
  • the camper's crew located in the hotel, while the camper is on a parking lot aloof. In the hotel public Internet Wi-Fi is. But assistans of the camper is not accessible for the camper's crew gadgets. More over, is need to reconnect all camper's crew gadgets to the new public Internet Wi-Fi in each new hotel.
  • some Internet sharing devices installed in the camper (4G, satellite), but while the camper's crew is walks out far, this Internet connection is not accessible for them.

In this case describes the easiest but expensive (Windows laptop is requared) method of a much distance public Wi-Fi access. Subscribe for updates bottom this page for other less expensive methods when they will published here.

EDUP EP-AC1621 dual band USB wireless Wi-Fi adapter was used here. Looks like any other with analogous Realtek 8814AU chip will works in this manner without any changes. For example Alfa Network AWUS1900, Comfast CF-939AC and CF-917AC and some other likely has Realtek 8814AU chip.

All settings were made via Windows PC. In some cases will need switch off the PC firewall while settings.

On the laptop was installed drivers Realtek 8814AU for EDUP EP-AC1621. Not necessary to install utilites that distributes with the drivers package, because this utilites can conflict in the laptop with other ones used for the Wi-Fi extending. For this, no need to use Setup.exe program within the drivers package, but need to install drivers in Windows Device Manager when EDUP EP-AC1621 is first time attached to the laptop via USB. The easy way to lunch Device Manager on a PC is press Windows key and then enter command devmgmt.msc.


If the laptop has integrated Wi-Fi board, then this board need to switch off vithin Windows Network Connections. The easy way to lunch Network Connections on a PC is press Windows key and then enter command ncpa.cpl. Then click right mouse key on the icon of integreted wireless board, and then click Switch off them.

On Windows 7 laptop, that have no inner utilite for makes Wi-Fi hotspot, utilite Mars WiFi was installed. On Windows 8.1 or 10 which both haves inner utilite for makes Wi-Fi hotspot, no need to install any utilite like Mars WiFi.

Next settings was trivial:


Connect to a public AP using the PC laptop.


For Windows 7 PC with Mars WiFi installed is only need to specify name and password of the new hotspot.


On Windows 8.1 or 10 via Windows Settings, then Network & Internet, then Mobile hotspot tab, is only need to edit name and password of the new hotspot and switch on.

From this point, on the laptop was works Wi-Fi hotspot and the camper’s router was attached to this hotspot via router's web face. Need to keep in mind that if no one client will attached to a new Wi-Fi hotspot while 5 minutes, this hotspot will switched off automatically.

Campers's crew gadgets was attached not to the PC Wi-Fi hotspot, but to the camper's router (AP of this router). In this case all assistans in the camper and all crew's gadgets was in one network and discovareble to each other.

At each new place was only connecting to a public AP using the PC laptop. The connections of crew's gadgets and of camper's assistants no was need new settings.

Four 6 dBi antennas of EDUP EP-AC1621 was provide works at long-range distance up to public AP. And two 8 dBi antennas of camper's AP (router) was provide works at long-range distance up to camper's crew gadgets.

When Wi-Fi antennas of camper's AP (router) and of EDUP EP-AC1621 was being placed on sites, this considerations was being taken in account:

  • antennas, as well as EDUP EP-AC1621 itself with antennas, need to place outside windows of the camper / a hotel. Especcially when a glass of a window is toned. One glass at the Wi-Fi path decrease power of signal twice for 2,4 GHz band, and more for 5 GHz band.
  • for this case, an antenna with more than 8 dBi parameter can't practically used because too narrow radiation pattern.
  • the 2.4 GHz band is more usable in this case then 5 GHz band because second one works for shorter distances.
  • in case when a Wi-Fi antenna is connected via a cable, the maximum length of the cable is 15 meters. The resistance of the cable must be 50 Ohm, better if 75 Ohm or more.


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