2.4Aerial

[Steve Goodwin]

Hello all

Maybe a stupid question but......

Does the aerials from the 2.4 Ghz rx have to extend out of the airframe?

I use Futaba and they are so short, currently I have them exiting the fuz but cause they are so short they look a bit silly

what do you do?

Steve

[Bill Brown 3]

They dont have to go outside the fuz Steve but they do need to point as close as poss at 90 degrees to each other.

[Chris Bott - Moderator]

Steve they are best at 90 deg to each other, AND as far apart as you can practically get them.

They only need to be outside the fus if it's one that might shield them from RF, such as a carbon fus or one covered in a metalised film for example.

[John Privett]

Most of my planes have the aerials inside the fuselage. The only exception is a small glider where there isn't space to (easily) mount the aerials inside at 90 degrees to each other.

You would need to mount the aerials externally if you had a carbon fuz.

[Steve Goodwin]

Thanks chaps, but one more thing,

What is the best way of securing them in the fuz, I know they have to be 90 deg from each other, but how do you fix them so they stay 90 deg?

Cheer

Steve

[Craig Carr]

Hi Steve,

Me personally (futuba fasst rxs) I use some short lengths of thin plastic tube glued into the fuz where you want the 90 degrees to be.

Then just put the aerials inside them. I tend to arrange it though so that the final inch or so ( the exposed/unsheathed ends) protrude out of the tube.

Craig

Edited By Craig Carr on 24/09/2013 07:34:47

[Greybeard]

I use short lengths of soft drinks straws to hold the bare ends in the correct positions.

[Steve Goodwin]

All I need

thank you for your time

[Steve Hargreaves - Moderator]

+1 for drinking straws to hold them in place.

Also make sure you route them away from any sources of electrical noise if possible.....servos, ESCs, Ignition models etc all put out electrical "noise". In practce 2.4GHz is usually higher than any RF noise generated by such items but best practice & all that....

[Frank Skilbeck]

Posted by Steve Hargreaves - Moderator on 24/09/2013 12:15:48:

+1 for drinking straws to hold them in place.

Also make sure you route them away from any sources of electrical noise if possible.....servos, ESCs, Ignition models etc all put out electrical "noise". In practce 2.4GHz is usually higher than any RF noise generated by such items but best practice & all that....

Good practise but not always possible, I've used the Orange DSM2 Rx's mounted right next to the ESC with no issues a Spektrum DSM2 rx between the ESC and motor (EDF) with aerials close to the electrical parts and several electric planes with the single aerial M Link Rx's and not had a hint of bother. One of the planes was a real pain on 35mhz and still glitched which was cured by moving to 2.4.

The important thing is to do a power on a range check.

Edited By Frank Skilbeck on 24/09/2013 12:57:47