UAV's In Australia

Location: Australia
Members: 198
Latest Activity: 5 hours ago

Discussion Forum

Remote Pilot Certificate

Started by Ben Hart. Last reply by Nicholas Witham 5 hours ago. 9 Replies

Hi Guys,Just wondering if anybody here has done there remote pilot certificate (fixed wing & multirotor) and can recommend an company in Australia? I am located in Perth but am happy to travel. I…Continue

FOR SALE - 3DR X8 + many spare parts!

Started by james mccallum Apr 21. 0 Replies

Hey folks, I've decided to sell my X8 as I'm heading OS and don't like the thought of it sitting motionaless for the next few months! …Continue

Saving APM settings on mission planner, can we?

Started by Michael Withington. Last reply by Hotwire Apr 20. 3 Replies

Giddy everyone, I heard it was possible to save an APM settings on mission planner so that it's possible to use them again on another APM or maybe a pix hawk? Even just to back up the data settings,…Continue

For sale

Started by Todd. Last reply by dave james Apr 16. 1 Reply

Just in case anybody is interested

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Comment by Michael Withington on April 13, 2015 at 6:12am
I just wanted to know if anyone has info about the idrone device from fighting walrus. Will the 915Mhz work on a RFD900 or will I be waiting again for another version for RFD900.
Comment by Phil P on April 11, 2015 at 1:54am

Hi Fred, I think the USB radio uses the FT232R chip

So if you unsolder pins 1 and 5 on the chip you can connect wires to the pads on the PCB and solder these wires to the TX and RX pins of APM.

So, yes techincally possible, but not something many would attempt. I run the RFD900 modules, so I can't check one physically. Maybe there is a breakout connection somewhere more convenient on the board?

Comment by fred flintstone on April 10, 2015 at 11:22pm

Hi all need little help as always only on  weekend getting ready go out sunday

my Telemetry air side has died on spares can i convert usb module to air radio ?

Comment by Warren Eather on March 16, 2015 at 11:15pm
Yep, Tim it's exactly the same document. Smug rights are all yours.
And your right again. You would need an antenna of a gain greater than 10db to get yourself in trouble with the 3DR 915 at maximum output. That's another reason to get the 915 over the 433.
Comment by Tim on March 16, 2015 at 10:42pm

At the risk of sounding smug, that ACMA document is precisely the one I linked to previously...

Warren, your EIRP point is a very pertinent one. However for the 3DR radios at least, they max out at 20 dBm which is far below the 30 dBm threshold with a vanilla setup.

Comment by Bill Bonney on March 16, 2015 at 10:42pm

@Mitchell Berry: Radio Amateur take undertake study of how radio transmission work. How to build antenna and how to detect and mitigate the reception and the transmission of radio waves on unwanted frequencies (interference). Due to this expert knowledge they are allowed to do more with more power. 

They still have a non-commercial license, and the expectation to help with communications in emergency situations.

Comment by Mitchell Berry on March 16, 2015 at 9:53pm

Supposedly you are allowed much more power from 433MHz with an amateur radio license.

I can't actually work out what a licensed radio operator does that makes them more capable of using that band? Is there some sort of CB frequency to announce your intentions to other people around? Doesn't make any sense to me.

Comment by Warren Eather on March 16, 2015 at 9:35pm
Thanks Hotwire, that's a good document.
It's important to note that the maximum power stated refers to the Equivalent isotropically radiated power EIRP, that is transmitter power + antenna gain and not just the transmitter power.
So for example if you had your RFD900 and a 3db antenna the maximum transmitter power setting to achieve a EIRP of 1W or 30dBm would be 30dbm-3db= 27dbm = 500mw that's half power!!
Comment by Hotwire on March 16, 2015 at 2:55pm

I have written to ACMA and I'm happy to concede I am wrong.

Attached is the document that ACMA sent to me. It contains schedule 1 radio users regulations and is most likely what you have already referenced or a derivative.

Thanks Mitchell & Tim. Ego bent but not broken.


Comment by Duncan Greer on March 15, 2015 at 1:27pm

Its worth noting that the band in Australia is 915 to 928 MHz, as opposed to North america where the band is 902-928 MHz.. perhaps this is where the confusion is coming from??  


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