Olimex Support Forum

Microcontrollers => ESP8266 => Topic started by: jwschull on November 15, 2015, 10:50:07 pm

Title: External Antenna
Post by: jwschull on November 15, 2015, 10:50:07 pm
I'm thinking on putting a higher gain antenna (other than the trace antenna).  I know I need a Rf Coax Connector and it looks like I have to close SJ2.  Is that all that's required?  Do I need to lift C5?
Title: Re: External Antenna
Post by: jwschull on November 20, 2015, 06:49:31 pm
Been 5 days, no response from tech support.  Lots of views.  I guess I just have to experiment.
Title: Re: External Antenna
Post by: kylix on November 01, 2018, 05:38:17 pm
Did you manage to connect the external antenna? Any component that you had to remove for disabling the PCB one?
Title: Re: External Antenna
Post by: olimex on November 02, 2018, 08:59:20 am
this forum is not support channel, if you have support question please use support@olimex.com
Title: Re: External Antenna
Post by: LubOlimex on November 02, 2018, 01:35:07 pm
You also need to remove the C5 capacitor. So, in total, you need to close SJ2 jumper and remove C5 capacitor. Soldering SJ2 together - enables the external antenna pads; and removing C5 capacitor disconnects the built-in PCB antenna. Refer to the schematic for better understanding: https://github.com/OLIMEX/ESP8266/blob/master/HARDWARE/MOD-WIFI-ESP8266-DEV/MOD-WiFi-ESP8266-DEV%20revision%20B1/MOD-WiFi-ESP8266-DEV_Rev_B1.pdf

The external antenna should be connected to the "ANT_CON" connector (find the white print on top of the boards).

There are a lot of sources that describe suitable antennas for ESP8266. Make sure to check some of these sources available online.