Devo 10 black range vs Devo 10 white

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djtrance
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23 May 2014 23:40 #23545 by djtrance

Devo 10 black range vs Devo 10 white was created by djtrance

Today, with a friend, we did a little range test with both tx on the ground (devo 10 black and white edition). both tx at 70 cm on the ground, and the rx is rx601, both at the same altitud. This test has not been taken in direct line of view (there are 1 car in the middle). the tx power is 20db.
the result:
devo 10b 599.36 mts (with googlemaps)
devo 10W 733.39 mts "
diference: 134 mts
some one did the same test?

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SeByDocKy
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24 May 2014 04:15 #23554 by SeByDocKy

Replied by SeByDocKy on topic Devo 10 black range vs Devo 10 white

djtrance wrote: Today, with a friend, we did a little range test with both tx on the ground (devo 10 black and white edition). both tx at 70 cm on the ground, and the rx is rx601, both at the same altitud. This test has not been taken in direct line of view (there are 1 car in the middle). the tx power is 20db.
the result:
devo 10b 599.36 mts (with googlemaps)
devo 10W 733.39 mts "
diference: 134 mts
some one did the same test?

No you are the first ...

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PhracturedBlue
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24 May 2014 05:29 #23560 by PhracturedBlue

Replied by PhracturedBlue on topic Devo 10 black range vs Devo 10 white

They claimed the Devo10W had better range, but I've been skeptical. There are only so many things they could do to increase the range:

1) up the power to 150mW from 100mW in software. This would affect the black as well so it seemed unlikely
2) use an alternate antenna design to tradeoff directionality for range
3) use a different PA on the CYRF board with more output power. this seems unlikely as ~20dBm is about the limit before FCC gets angry
4) revamp the CYRF board to better match the antenna (or imporve efficiency via layout/noise reduction). This is possible, but swapping the CYRF module into a black should then provide the same range.

So it is definitely interesting to see there is a difference. I am not sure if 134m is within the noise or measurement or not though.

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vlad_vy
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24 May 2014 06:15 - 30 May 2014 05:41 #23562 by vlad_vy

Replied by vlad_vy on topic Devo 10 black range vs Devo 10 white

It seems the range difference caused by antenna difference only.

5dBi - 2.2dBi = 2.8dBi = 1.5 times in power = 1.22 times in range

600m * 1.22 = 732m

Last edit: 30 May 2014 05:41 by vlad_vy.

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djtrance
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26 May 2014 02:37 #23619 by djtrance

Replied by djtrance on topic Devo 10 black range vs Devo 10 white

When i did the measure, I did it in the same time at the same position (into a car, in the back of the car with line view) and the black radio near to the white, with the same receiver (both are rx601). I'm not sure if the range can be more in the air, I listen from other guys that the range of the tx is better in the air, but I can't be sure.
I will try to do a better measure in two weeks, but this time I will use the devo 10 white, 10 black and devo F7 (i know that devo f7 can be the radio with less range, but I don't know how less must be)

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copter
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26 Sep 2014 00:45 #25806 by copter

Replied by copter on topic Devo 10 black range vs Devo 10 white

The possible difference: the antennas.
Please try the test again, and use same antenna for 2 transmitter.

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djtrance
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30 Sep 2014 01:03 #25884 by djtrance

Replied by djtrance on topic Devo 10 black range vs Devo 10 white

I only have the white version and the version black оf devo 10 have the fix and is from my friend. I will not remove the antenna of the deco black. maybe you can buy a white antenna for your devo and test it the range.

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