devo 10 antenna mod

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19 Jul 2014 12:09 #24690 by sbstnp
devo 10 antenna mod was created by sbstnp
I never liked the too big antenna on my Devo 10 so decided to mod it.

1. Removed the stock antenna (together with the pigtail).
2. Dremel the stub flush with the case. Used the disc perpendicular on the hole after the cut to even the surface a bit.
3. Use a u.FL to SMA pigtail (10cm, the shortest I had)
4. Choose one of the 2dbi, 3dbi or 5dbi antennas I had laying around.

Range even improved a bit, I got 43 paces (~35m) with the 2dbi antenna using a DSMX sat as receiver, at 100uW, horizontal polarization.

Pics:








Devo 10 + 4in1
Spektrum Dx9
FrSky Taranis + TBS Crossfire

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21 Jul 2014 02:01 #24714 by PhracturedBlue
Replied by PhracturedBlue on topic devo 10 antenna mod
Just like the new Devo10-White :)

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21 Jul 2014 03:48 #24716 by sbstnp
Replied by sbstnp on topic devo 10 antenna mod
Yep! :)

Devo 10 + 4in1
Spektrum Dx9
FrSky Taranis + TBS Crossfire

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05 Sep 2015 21:10 #37479 by vilaca
Replied by vilaca on topic devo 10 antenna mod
I like how you did this.

I might copy you since I broke my antenna and walkera is asking for 5 USD for new one plus 28 USD P&P.

However I'm not sure I can pull it off as I don't own a dremel. I'll have to either buy one or come up with a different way to cut the plastic.

The bit that goes inside the Radio, did you screw it to the PCB or solder?

It would be nice to have a selection of antennas to chose from, according to occasion 2db to 7db :)

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05 Sep 2015 21:42 #37481 by vilaca
Replied by vilaca on topic devo 10 antenna mod
I'm doing some reading after my post and now have a few questions

What impedance should the replacement antenna have?

Left or Right hand polarization?

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06 Sep 2015 08:10 #37488 by Arakon
Replied by Arakon on topic devo 10 antenna mod
Neither. Linear. These are linear antennas, which can be seen from the fact that they're a straight line.
Impendance is 50 Ohms.

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06 Sep 2015 13:47 #37495 by vilaca
Replied by vilaca on topic devo 10 antenna mod
Thanks.

I'm trying to learn about this topic to make sure I do the right thing.


How did you come up with the value for antenna impedance?

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06 Sep 2015 13:49 #37496 by Arakon
Replied by Arakon on topic devo 10 antenna mod
50 ohms is standard for these types of antennas and applications.

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11 Jun 2016 20:39 #50425 by vilaca
Replied by vilaca on topic devo 10 antenna mod
Finally did a variation of this mod using the 3d printed adapter available at www.thingiverse.com/thing:1150847

I broke the antenna a few months ago and was asked $5.00 + $28.00 ( shipping cost by UPS ) for a replacement so this is much cheaper and more convenient.

Took around 5m to open the TX, replace pigtail and install 3d printed bit.

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