TX POWER

HI

I'm new to RC and have just got an Devo-10 and installed the deveationtx firmware and bound it to DSM2 (Blade 120SR). Everything works fine but have not found any information about TX power - which to use or when to use which setting. I guess this is how much power the radio are sending with, but when to use the different setting I would like to know.

Thanks..

Stein

TX Power depend on how far you want to be able to command your heli.
Generally for indoor 1mW is enough, 10mW is good for outdoor small machines, 100/150mW for the the biggest.

PhracturedBlue wrote: Also, it is not friendly to use more power than you need. So while you could use 150mW everywhere, it adds interference to the 2.4GHz spectrum, and can cause disruption to others flying, cordless phones, wifi, or bluetooth.

Another problem with too much TX power is with telemetry: The typical telemetry capable RX or the Walkera CTL telemetry module have a fixed 5 or 20mW output. If you have 150mW enabled on your TX you raises the RF noise floor in the 2.4GHz band (as PB described), which will significantly reduces the sensitivity of your TX's telemetry receiver. This will result in reduced telemetry distance compared to the distance you could get from the 20mW transmission.

I think you focus on the digital side of the chip, where the process is half duplex. On the receiver RF front-end (analogue) side, and especially when you have a LNA with dynamics gain stage in the signal path, it is not that simple. The higher the RF energy feeds back into the RX path, and it takes a while to settle back to maximum RX sensitivity. The typical R/C system is not designed as a full duplex RF system like a cell phone.

Your statement also assumes you are using the same RF module for the TX and telemetry, which is not necessarily the case for many (of 3rd party add-on) telemetry systems.

So for Devo 10 flying Blade 130x, V120d02s , 200QX and Ladybird flying in a football size field which mw value should I used? Not using Telemetry.

10mw, 30mw , 100mw or 150mw

Same question but football size field in busy city park with alot of runners/bikers on bluetooh passing by?

vlad_vy wrote: 10mV will be enough, but for confidence you can use 30mw.