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Re: ESP8266EX Breakout/Dev Board

PostPosted: Fri Oct 10, 2014 6:59 am
by tinhead
you forgot to measure with no antenna selected

Re: ESP8266EX Breakout/Dev Board

PostPosted: Fri Oct 10, 2014 7:21 am
by Squonk
Not bad!

What about directivity?

Re: ESP8266EX Breakout/Dev Board

PostPosted: Fri Oct 10, 2014 11:23 am
by CheapB
This looks awesome! If a complete board was put together as a group buy at a reasonable price I would be all over it..

Re: ESP8266EX Breakout/Dev Board

PostPosted: Wed Oct 22, 2014 3:43 am
by Claude
I hooked up the ESP to my Spectrum Analyzer this morning.

Sorry for the Cellphone Pics , but I couldn't find a CF Card for the SA :D

Thats the ESP running at Wifi Channel 6 (2437MHz) , connected to my AP (~50cm away)

Image

For comparison here is the same setup but with the ESP unpowered , my AP @ Ch6 is still quite visible.

Image

Quite a lot of spurs from the ESP and the occupied BW is also not that good.

So anyone considering using the ESP in a commercial setup should think, imho, a bit about using an external bandpass filter ... and good luck for the FCC approval ;)