Replies to This Discussion

3D RoboticsPermalink Reply by Chris Anderson on May 30, 2010 at 8:25pm

I would avoid 5.8. The higher the frequency, the worse the range in my experience. You can use 2.4 even if you're using 2.4 RC, however.

• ▶ Reply

Permalink Reply by Brett Glossop on May 30, 2010 at 8:32pm

Thanks Chris,
2.4 will certainly be cheaper to start out. Thanks.

• ▶ Reply

ModeratorPermalink Reply by Alex on May 30, 2010 at 10:22pm

If you use 2.4 telemetry with 2.4 RC gear are there any special setup considerations you need to take into account so they don't interfere?

• ▶ Reply

3D RoboticsPermalink Reply by Chris Anderson on May 30, 2010 at 10:26pm

To be honest, I'm not sure. I only use 2.4 for short range and I don't have modules with the proper antennas to test outside. But I hear tell that people have had success with the right gear.

• ▶ Reply

ModeratorPermalink Reply by Brian on May 31, 2010 at 12:58am

Whooa! That's a deviation on what has been recommended in the past. The position was to not use 2.4 if you are using 2.4 for your RC gear.

I posted something a long time ago and I'll bring it up again. I REALLY think it's a good idea to have a page/post created where people can "sign-in" and simply list the gear they use with their working uav configurations. Members could use the page as a resource for frequency diversity, plus get a better understanding how the different components work together. What I envision is a page that is formatted like a table. It has the members name, a list of RC gear, Telemetry, Video and the frequencies used on each plus a link to the members project page. I believe a simple resource like this would be valuable to everyone.


@ Brett, Can you use 1.2ghz or is that off-limits too?

• ▶ Reply

Permalink Reply by Brett Glossop on May 31, 2010 at 1:48am

@ Brian, I've seen something similar for an AP photo contest without the need for any special table, just lines which others keep copying and pasting. If there is little extraneous chatter it should work.
e.g.
Plane:
Motor:
ESC:
Prop:
Battery:
AUWeight:
Uplink Frequency:
Uplink brand or type:
UAV board(s):
AutoPilot S/W:
GPS:
Attitude sensors:
Downlink (brd, antenna and freq):
Groundstation:
Other:

List may be a bit long and off putting. But they don't need to fill in everything.
Without chatter that would probably work.

• ▶ Reply

Permalink Reply by Martin Seven on May 31, 2010 at 1:55am

That's actually a pretty good idea. Maybe an extra item on user's personal page?

• ▶ Reply

ModeratorPermalink Reply by Brian on May 31, 2010 at 9:13am

The original post I did way back didn't get any response, but did include details listed here by Brett.

I like the idea of the setup details on the members personal page.

@ Chris - Is that something you think is worth the effort and is it possible to put on the members page?

• ▶ Reply

Permalink Reply by Brett Glossop on May 31, 2010 at 2:11am

Been checking online and a little over my depth with the jargon. But I think the 1.2 GHz is off limits here in Aus as it wasn't even on a long list of frequencies with use type.

• ▶ Reply

Permalink Reply by Ryan on May 30, 2010 at 10:45pm

Using 2.4ghz for telemetry in conjunction with 2.4ghz RC gears you will experience some link quality degradation (spelling)
especially if you use high power telemetry link.

I you must use it then I suggest using Futaba FASST instead of JR/Spektrum because Futaba FASST does true freq. hopping and so will your 2.4ghz telemetry link thus they will less likely to step on each other.

I however know that Futaba gears/services in Australian is sh*t - nobody seem to carry them in the shops which is unfortunate but Toy Trader (the importer) is not doing a very good job.

• ▶ Reply

Permalink Reply by Fouad on May 31, 2010 at 12:34am

I had bad experience in this subject using similar combination, here is a reference to my previous thread:
http://diydrones.com/forum/topics/score-xbee-pro-2-receivers

• ▶ Reply

Permalink Reply by Brett Glossop on May 31, 2010 at 2:14am

Thanks for all your comments guys.
I think I will have to play it safe - keep as far apart as practical on plane, and test and keep reading.
Any aussies out there who know allowed frequencies or a link? (I've tried and confused myself at www.acma.gov.au )
Thanks

• ▶ Reply

• ‹ Previous
• 1
• 2
• Next ›
• Page