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.php
Some of the key features of the RFD900 are as follows:
- Multi point and point to point link capability.
- Long range >40km depending on antennas and GCS setup.
- 2 x RP-SMA RF connectors, diversity switched.
- 1 Watt (+30dBm) transmit power.
- Transmit low pass filter.
- > 20dB Low noise amplifier.
- RX SAW filter.
- Passive front end band pass filter.
- Open source firmware / tools, field upgradeable, easy to configure.
- Small (30 x 57 x 13 mm), light weight (14.5g).
- Compatible with 3DR / Hope-RF radio modules.
- License free use in Australia, Canada, USA, NZ.
These modems are designed to support long range applications, while being easy to use and affordable.
These modems have been flying in various platforms and have demonstrated excellent performance in real applications.
RFD900 modems are now available at: http://store.rfdesign.com.au
Support within APM planner and the radio configurator from Michael Oborne is already available.
It works seamlessly with APM planner, all radio Mavlink parameters are available.
Update, December 2014: The RFD900+ with improved specifications is available now at:
http://store.rfdesign.com.au/rfd-900p-modem/
Seppo Saario
rfdesign.com.au
Replies
RFD900u's are now available at the RFDesign online store!
Along with cables for APM2.5, Pixhawk and FTDI cables.
This week quantity is a little limited, but next week, we'll have a bunch available :)
Will post some more info as we get into more extreme testing on what they can do !
Cheers,
Seppo
Hi!,
It's been a while since posting. We have been working on a new, mid-range modem, the RFD900u for a while.
We tested the RFD900u V1.0 boards and were happy with everything except 1 trace for the IRQ lines from the radio back into the processor... We missed it in the middle of the mega datasheet for the Si1030. So, we had to release a V1.1 board with the fix.
However, it let us test everything else on the board and it looks nice.
Today we received the RFD900u V1.1 boards which are getting loaded next week for trial testing. We are getting a production batch scheduled shortly as well, and plan to have these on the online store in around 3-4 weeks, in stock :)
The RFD900u is not really a replacement for the RFD900u, rather a complementary modem. It is only 100mW (20dBm), there the RFD900 is 1W (30dBm).
The RFD900u is suited for mid range apps, not quite as far as the RFD900, but, much further than any of the existing offerings around, in this small size.
I am estimating range around 10km or so, but, would love to see how far they really go!
Attached is a picture to show the comparison between the modems. :)
Hope you like it !
Seppo
Jon I'm sure this ins't the case but what the heck... I had similar issues once only come to find out I forgot I had another radio plugged in on another computer so the connections was not working right with 3 radio's at once. Just a thought :]
I would also love to see a version with 868 Mhz.
A new modem is in the works with PCBs in transit back to us.
Some brief specs:
Compatible with RFD900/3DR/Hope RF based modules.
AES128 encryption, hardware accelerated.
128kB Flash/8kB RAM
2 x u.fl antenna connectors (diversity switched)
New LNA, RX SAW filter, TX low pass filter
DF13 8 way connector, with 2 x user programmable IO.
18.5 x 29 x 4 mm size including shields.
Antenna wise, we have some new FLEX2 antennas available in the store. They are designed to stick onto vertical surfaces, giving vertical polarisation. Using a FLEX1 along with wing, or fuselage and FLEX2 on the fin will give the best diversity coverage on small airframes. :)
Seppo, can you shoot me a PM with a generic "how to" on setting up the PTZ directly to the RFD900? Im assuming it is an RS485 to UART converter that I need?
I just bought these radios recently and I'm having a really difficult time getting these things to work with the PX4 in Mission Planner. I have a post in the forums if anyone can help. http://diydrones.com/forum/topics/rfd900-px4-will-not-connect-in-mp...
The latest Firmware and initial setup seems to be working but then the radios break their link and no longer connect after trying to connect with them in the Mission Planner. I'm itching to use these things and I've followed as much instructions as I could find.
Hello!
To make the most out of the RFD900 diversity performance - we have another flex PCB antenna out soon. Having a horizontally polarized flex antenna on the wing/fuselage (RFDANT Flex1), and a vertically polarized flex on the vertical stab/ winglet (RFDANT Flex2), will give the best diversity performance with minimal drag. Performance is around 2dBi with wide radiation patterns. They are designed to operate on foam/film/balsa and thin fiberglass surfaces. They both will be available in quantity around the end of July! - Will keep you posted!
Seppo :)
Seppo, got a question. I have recently purchased a pan tilt zoom dome camera that uses RS 485 for communications. I plan on using a panda board ES on board the airplane to do payload commands and communications with the camera via a RS 422/485 converter. The thought is that I could remotely access the panda board from the GCS using the RFD 900 to drive the pan tilt and zoom functions of the camera. Is this feasible or do I need another solution? Im new to all this computer and data stuff, so please forgive me if I sound a little out there.
And I thought this day couldn't get any better :) Now I can run the my payload GCS independently with the joystick interface... SWWEEEETTT!
-
55
-
56
-
57
-
58
-
59
of 61 Next