Setup Wifi when no Ethernet Connection is available:

1. Create a new RemoteTx micro SD Card using Etcher as outlined in the Start Up instructions:
2. Put the new micro SD Card in the Raspberry Pi and boot it by applying power. Let it run for at least 2 minutes.
   This allows the RTx image to expand to the size of the micro SD Card you have chosen.
3. After the the Pi has been running for 2 minutes unplug the power and put the micro SD Card back in your computer.
   (The green light should only be flickering occationally.)
   It is important that the file of step #6 is not copied until after this first initial boot has been done.
4. Copy your ‘remotetx.conf’ license file the micro SD Card.
5. Create a new file with ‘Notepad‘ or a text editor and name it exactly ‘wpa_supplicant.conf’ (without the quotes). Copy the text lines from #6 below into it and save it to the micro SD Card. (Make sure the file ends in .conf not .txt)
6. Contents of ‘wpa_supplicant.conf’: (You can also download it in a zip file at: wpa_supplicant.conf.zip)

   ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
   update_config=1
   country=US
   network={
   ssid="NETWORK_NAME"
   psk="NETWORK_PASSWORD"
   priority=1
   }

7. Replace NETWORK_NAME and NETWORK_PASSWORD with your wifi credentials and save on micro SD card.
8. Put the micro SD Card back in the Pi and power it up to boot it.
9. After a minute or two the RemoteTx Pi should attached to your wifi network and will be reachable at:
   https://call-sign.remotetx.net
10. Steps 5-8 can be repeated any time you want to setup wifi without using the RemoteTx web interface. It is not necessary to start with a new micro SD card. All wifi settings will be replaced with the new file.

Disable onboard wifi to use external USB wifi interface:

1. Put the Pi micro SD Card in a PC or Mac.
2. Open the ‘config.txt’ that is on the micro SD Card.
3. Add to bottom of file:
   dtoverlay=pi3-disable-wifi
4. Save and put the micro SD Card back in the Pi and boot it.
5. You can now plug in a USB wifi adapter that is supported by Pi OS and it will be active instead of the on board Pi wifi. This is useful when the Pi is a great distance from the wifi access point and needs to have a stronger signal from a more powerful USB wifi adapter.