Seppo
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  • Brisbane, QLD
  • Australia
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Seppo's Groups

Seppo's Discussions

Drones to become target practise for Australian farmers !

Started this discussion. Last reply by Greg Fletcher Mar 31, 2013. 1 Reply

Ran across an interesting thread discussing the proposed use of UAVs for cattle monitoring.I imagine it'd sure get expensive quick !    …Continue

RFD900 - New long range radio modem

Started this discussion. Last reply by clay turney on Wednesday. 197 Replies

Hi All,I would like to introduce you to a new radio modem that we developed for very long range datalinks!http://rfdesign.com.au/RFD900.phpSome of the…Continue

No GPS Altitude update on arduplane 2.27a / apmplanner 1.1.13

Started this discussion. Last reply by Seppo Jan 2, 2012. 2 Replies

Ran into some strangeness with the GPS altitude on the latest firmware.On initial bootup, GPS gets a 3D fix, and the altitude is correct on apmplanner.Taking off and flying, the altitude remains…Continue

Throttle weirdness on arduplane 2.26/ apmplanner 1.1.2 vs. normal on 2.24/1.0.88

Started this discussion. Last reply by Don Brooks Dec 9, 2011. 3 Replies

Gday,Things are fine with the old combination of arduplane 2.24/ APM planner 1.0.88With arduplane 2.26/ apmplanner 1.1.1 or .2, I can't get throttle settings to work.Have gone through…Continue

 

Seppo's Page

Latest Activity

clay turney replied to Seppo's discussion RFD900 - New long range radio modem
"This makes me wonder what the power output limit of my tablet and OTG cable is. I don't see myself needing the full 30dBm output but I wonder what the amp draw limit would be to much for a mobile device. Figure 4.2 from the data sheet shows…"
Wednesday
Shameem Ferdous replied to Seppo's discussion RFD900 - New long range radio modem
"Is it the same with rfd900...in your attachment it's 3dr telemetry module."
Oct 15
Richard Kennedy replied to Seppo's discussion RFD900 - New long range radio modem
"I think the only required connections are RX TX 5v and  ground. Here's a pin out hope this helps"
Oct 15
Shameem Ferdous replied to Seppo's discussion RFD900 - New long range radio modem
"Hi, I am using RFD900 from jdrones.com and minimosd v1.1 on my apm2.6. I am requesting a wiring quary. The splitter cable minimosd came with has this cable. There are four cables for telemetry whereas my modem has already 5 wires. How do I connect…"
Oct 15
Sergios Zafeiropoulos replied to Seppo's discussion RFD900 - New long range radio modem
"excuse me for asking but if you use 433 for long range telemetry what will you use for radio then ? I'm asking because i always thought its better to use 433 radio and 900 for telemetry and 1.2-1.3 for video for long range setups "
Oct 5
Richard Kennedy replied to Seppo's discussion RFD900 - New long range radio modem
"Okay cool thanks that's about what I figured but wasn't sure."
Oct 5
davidbuzz replied to Seppo's discussion RFD900 - New long range radio modem
"@ richard. .. if the long axis of the antenna is mounted vertically, like top-to-bottom on the tail fin of your aircraft then it IS vertically polarized. On the ground, you thus need one of the ground antenna to also be vertical. That is the usual…"
Oct 4
Richard Kennedy replied to Seppo's discussion RFD900 - New long range radio modem
"@ Seppo I have noticed that the antenna's you sell are not listed a vertically polarized or horizontally polarized on the stores web page. I think that would be helpful.. And on the same subject.... is it important that a vertically polarized…"
Oct 4
Seppo commented on Chris Anderson's blog post CanberraUAV daily reports from the Outback Challenge
"Wishing good luck for tomorrow !!"
Sep 25
Seppo replied to Seppo's discussion RFD900 - New long range radio modem
"Hi All!,Luke and I were able to go to the UAV outback challenge at Kingaroy on Wednesday, the first day of the search and rescue challenge.https://www.facebook.com/UAVChallengeThere were 15 teams competing on the day and 14 of them were using the…"
Sep 25
Horace Cunningham replied to Seppo's discussion RFD900 - New long range radio modem
"Thanks for the info Seppo. One concern I have about using a yagi on the repeater rather than a high gain dipole is that the aircraft would lose gain if it is not directly aligned in the transmission beam of the repeater. For example: I have…"
Sep 9
Seppo replied to Seppo's discussion RFD900 - New long range radio modem
"Just a quick update on things that we're up to ! We have just added some more antennas to the online store - 6dBi outdoor, omnidirectional antennas which are good for more permanent, rugged installations.   Some more 900MHz antennas are…"
Sep 9
Seppo replied to Seppo's discussion RFD900 - New long range radio modem
"Hi Horace, That certainly sounds like an interesting application.. The only practical way of setting up a repeater network as you describe would be with 2 modems back to back at southwest rock - each modem there would have it's own network…"
Sep 9
Horace Cunningham replied to Seppo's discussion RFD900 - New long range radio modem
"I would also like to know if the plans/schematics for the RFD900 is available "
Aug 30
Horace Cunningham replied to Seppo's discussion RFD900 - New long range radio modem
"Hi Seppo, fantastic work on the RFD900. My name is Horace and I am part of a Jamaican UAV dev team working on an ambitious program which involves the use of UAVs in anti IUU(Illegal, Unregulated and Unreported) fishing. We are currently working with…"
Aug 30
Shameem Ferdous replied to Seppo's discussion RFD900 - New long range radio modem
"I can't see any LEDs. Mine are from Jdrones."
Aug 19

Profile Information

About Me:
Engineer, Pilot, General Geek and interested in anything electronics, flying and any random cool thing of the moment
Please tell us a bit about your UAV interest
Variable pitch quadcopters, UAVs for the outback challenge
Hometown:
Brisbane

Comment Wall (1 comment)

At 12:44am on December 29, 2013, mParets said…

Hi. I'm struggling in an attempt to get a pair of RDF900 modems talking to each other. When installed on a Raspberry Pi via USB and seems to work find (responds to +++ to enter AT command mode). When installed on my Windows 8 laptop I get nothing. The status light flashes, I get a red flash when I transmit a key press (testing with Pythons Miniterm). I even down graded Usb driver to the .28 version as suggestion in forum post. No luck on any front get a response on the pc, and no suggestion that the two modems are connecting.

Is there a fix for any known issues with Windows 8?

Is there is tutorial/primmer/testing document? Something that I could follow to make sure I am setting everything up right?

Any suggestions would help.

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