RFD900, RFD900+ - New long range radio modem - Discussions

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

- - - James tate > Andrew Pena September 8, 2015 at 4:37pm
      
      pictures 1-3
    - James tate > Andrew Pena September 8, 2015 at 4:30pm
      
      Pictures 4-6
      
      Pict4.JPG
      
      Pict6.JPG
      
      Pict5.JPG
      - James tate > James tate September 8, 2015 at 4:31pm
        
        picture 7-8
        
        Pict7.JPG
        
        Pict8.jpg
        
        https://storage.ning.com/topology/rest/1.0/file/get/3702850298?profile=original
        
        James tate > James tate September 8, 2015 at 4:34pm
        
        pictures 1-3
    - James tate > Andrew Pena September 8, 2015 at 4:26pm
      
      I can click on the same website and see the pictures, I guess Dropbox is not giving you permission to see them.
      
      The diydrone only lets you upload three pictures at a time, so I guess I will have to do this the hard way, I will send three different messages with three pictures at a time so you can see all eight pictures.
      - Developer
        
        Bill Bonney > James tate September 8, 2015 at 4:55pm
        
        You posted a general link to dropbox folder. You need to create a new folder in DB and then click the share button...
        
        James tate > Bill Bonney September 9, 2015 at 8:40am
        
        Thanks Bill for your help, I think I got it figured out now.
        
        Here are the picture of wiring the 900+
        
        https://www.dropbox.com/sh/vous5xts2ffqu4v/AACMoX2fIo4EfEEJLSEcaj_K...
        
        Dropbox - Link not found
        
        Dropbox is a free service that lets you bring your photos, docs, and videos anywhere and share them easily. Never email yourself a file again!
        
        Andrew Pena > James tate September 9, 2015 at 10:41am
        
        That was the solution, I can view the DP with photos now. Thanks again James!
Vinh PHAM GIA September 7, 2015 at 4:28am

I found those RFID RHCP antenna in the 900MHz band . Believing the specs, it's a 8dBi antenna, beam width: 72 degrees at -3dB.

After receiving the antennas, I took off the shell, which is a heavy metal tray with front pannel made of plexi glass. I laser cut a bottom and top plate out of plexi glass and use plastic stand off to mount them back together. As you can see I can save some space and weight as well. I hope to have some time next month to test those antenna.

On the right is the antenna taken out of the shell, on the left is the other antenna already in his new cover

Two antennas next to an IPhone 5 for scale purpose.

Another shot, this time the new antenna inside its previous metal tray.
Developer

Jani Hirvinen September 1, 2015 at 2:31am

Famous jDrones long-range telemetry sets have another upgrade, V2 and they are now available as 868Mhz and 900Mhz. All of them are using plus modems that are upgrade able for encryption and mesh protocols.

900 Plus set @ jDrones store

868 Plus set @ jDrones store

Set comes with all necessary cables, USB cable for ground unit, DF13 cables for both APM and Pixhawks, 2 x 3dbi Dipole antennas, 2 x monopole antennas for designated frequency.

And as always they all have strong cases and custom made adapter boards etc installed.

Both sets are PNP sets for APM and Pixhawk boards.

jD-RF900Plus Longrange

Long range telemetry set for all your UAV and UAS needs

of 65

This reply was deleted.