Search found 3 matches

by michaelburton
Tue May 08, 2018 7:48 am
Forum: ESP8266 SDK
Topic: It RF calibration necessary if we never transmit?
Replies: 2
Views: 885

Re: It RF calibration necessary if we never transmit?

Yes, it draws 300mA peaks during RF calibration which means we need big bulk capacitors (introducing high DC leakage) and a DC converter that supports higher currents (which adds cost and more quiescent current) for a calibration that may be completely unnecessary.
by michaelburton
Tue May 08, 2018 7:36 am
Forum: General Q&A
Topic: Does ESP8266 transmit during RF Calibration?
Replies: 0
Views: 2303

Does ESP8266 transmit during RF Calibration?

When the ESP8266 starts up it runs RF calibration which draws high current peaks for a few hundred ms.

Is the device radiating anything from its antenna during these current spikes?
by michaelburton
Fri Mar 02, 2018 7:41 am
Forum: ESP8266 SDK
Topic: It RF calibration necessary if we never transmit?
Replies: 2
Views: 885

It RF calibration necessary if we never transmit?

Hi, I'm just using the ESP8266 to scan for BSSIDs and not to transmit anything and I'd like to save the power of the calibration on startup.

Is the RF calibration on startup necessary if we are never transmitting anything?

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