MR60

What is the status of 3DR radios?

A user reported on this forum a 3DR representative announcing 3DR is stopping the 433 and 915 radios. I assume this is incorrect information or is it? Can a 3DR official give the real status?

If 3DR really stops the radios, what could be reliable replacements? (Don't tell me the HK rubbish)

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • Interesting point, I had assumed they had approval as they are from a reputable manufacturer making a quality product.

    I'm in Australia (as are rfdesigns) so they would need different approvals here. I just had a look at my RFD900s, and they don't have any stickers or marks on them indicating approval.

    Most teams in the 2014 outback challenge used these radios and the organisers were very strict on compliance so I'm assuming (hoping) someone checked!

    I highly doubt any of the Chinese clones would have FCC approval, although some may have a fake sticker!
    • As far as I know none of the telemetry radios on the RC/FPV/"Drone" market (clones or otherwise) had their designs licensed by FCC to operate in ISM band.  It doesn't mean that it is not compliant - most of them are of similar design and rely on the same chip.  It just means that it hasn't been certified by an FCC lab, and legally can not be sold in the US.  It has nothing to do with open source firmware either.  You can certify a radio with whatever version you choose and then sell it with that version, what the user does with it afterwards is entirely up to the user.  The problem lies in the fact that it is a relatively small market and nobody really wants to spent and extra $15K on certification if they don't have to.

      Now it is just a conjecture that FCC got on 3DR case, I really don't know.  But if it is, then others may follow suit, which means that large distributors or domestic manufacturers will get shut down, but individual sellers will probably not be affected.

  • A high quality alternative is http://store.rfdesign.com.au/rfd-900p-modem/

    These may be overkill as they are ultra long range, but use the same firmware and are fully compatible with the 3DR radios.

    Now that 3DR have stopped making 3DR radios, it's really down to old stock, Chinese clones or these.

    JDrones is selling their version of both the 3DR and RFD900's http://store.jdrones.com/jD_SiK_Radio_Telemetry_radio_p/rfsik20set.htm

    RFD 900+ Modem
    RFDesign designs and manufactures the Antennas, RF Electronics and the RFD900 radio modem
    • The statement: "The RFD900 is designed to be compliant with the following standards" tells me that they didn't obtain license from FCC for this radio as well.  They also say that :"The user is responsible for compliance with local regulations for radio transmitters" which is not correct at least for the US.  The burden of compliance for ISM band lies squarely on the manufacturer and distributors.  Granted if it is manufactured overseas and sold through places like ebay it would be much harder for FCC to shut them down.

  • HK, got the same hardware and plastic for the most part.  It is actually a better design since it doesn't rely on HM-TRP module but it is all done from the ground up.  I got the 433 radio from them and made it work on 915Mhz.  You pretty much have to limit out on the cap value for the crystal but it works. 

    That aside, I couldn't find any 3dr radios for sale anywhere either.   I wonder if they finally got busted by FCC for not getting a license for their radio.  If that's the case HK can be next. Better get some while you still can :)

This reply was deleted.

Activity

Abdulatif Tlaib liked Ryan's profile
19 hours ago
DIY Robocars via Twitter
RT @SmallpixelCar: First time at @wsraceways. After tuning @HokuyoUsa lidar signal and camera sensor on @NVIDIAEmbedded, my car was able to…
Sunday
DIY Robocars via Twitter
RT @breadcentric: The handy bit about racing with self-driving cars is that one can type while the car is racing. Report from #AWSDeepRacer…
Jun 18
DIY Robocars via Twitter
RT @chr1sa: Our Bay Area @DIYRobocars meetup is now at 2,700 members. Next in-person events (in Oakland) are training day on July 17 and…
Jun 18
DIY Robocars via Twitter
Videos from the ICRA autonomous racing workshop are now available: https://linklab-uva.github.io/icra-autonomous-racing/
Jun 10
DIY Robocars via Twitter
RT @SmallpixelCar: Prepared race track for Warm Spring Raceways @wsraceways and looking forward to test my new car at RAMS RC @ramsaicar fa…
Jun 6
DIY Robocars via Twitter
RT @f1tenth: Trying out some nasty blocking maneuvers 🏎️🤖 #f1tenth #autonomousracing https://t.co/nMTstsaogM
Jun 5
DIY Robocars via Twitter
May 27
DIY Robocars via Twitter
RT @araffin2: I will talk this Saturday from 18:00 to 19:00 Paris time for the @diyrobocars community about learning to race in hours using…
May 27
DIY Robocars via Twitter
RT @a1k0n: Luckily the infeasible hairpin problem was easily reproducible in simulation and I could test the fix before bringing the car ba…
May 26
DIY Robocars via Twitter
RT @a1k0n: Another problem was that I was over-constraining the car's allowed accelerations, so it didn't think it could turn as tight as i…
May 26
DIY Robocars via Twitter
RT @a1k0n: Breaking the map up into two halves worked, but I had to be more careful about separating the inner track from outer. There's se…
May 26
DIY Robocars via Twitter
RT @a1k0n: Here's a datalog for my fastest lap of the day. Lap timer is tiny window lower-left. https://t.co/myrlWWrKUY
May 26
DIY Robocars via Twitter
May 26
DIY Robocars via Twitter
RT @a1k0n: Here was my car's POV. Man this track is confusing in first-person! After the incident my camera was all scuffed up and I was af…
May 23
DIY Robocars via Twitter
RT @circuitlaunch: Loved seeing so many familiar (masked) faces at Circuit Launch today for our first in person @diyrobocars in over a year…
May 22
More…