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What does the following Tx and Rx specifications mean

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sanddune008

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what does tx and rx mean

Hi All,

• Rx current 39mA
• Tx current 39mA
Should Rx and Tx current drawn be less to improve the power efficiency?

• Receiver sensitivity -97dBm
What does Decibels /meter mean?Should this be more negative for a better sensitive TX or RX?

• Transmit power +3dBm
Should this value be higher to have a better range(distance)?

Thanks in advance
 

For RX/TX battery usage, 39mA is more than acceptable value.

-97dBm represents a usual value for receiver sensitivity (negative is fine).
dBm means:
https://en.wikipedia.org/wiki/DBm

Yes, if TX power is greater than +3dBm you get better range. But the DC power consumption will be higher.
 

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