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Active Wideband Receiver Antenna for your SDR

Software Defined Radio (SDR) has finally reached a much broader mass of people, who wanted to play with RF technology, but didn't find the time or resources to learn all necessary skills, to build a hardware based radio. Thanks to the work of the GNU-Radio and OsmoCom developer crowd, this barrier is finally gone and everyone can, more or less, directly access, what the antenna receives.


This is an early draft proposal for a solid, modular and distributed communication/monitoring system shared and operated by communities (not everyone needs his own equipment in a neighboring area). It will offer services locally for community members and the nodes should be interconnected worldwide to create a global network of free-to-access Communication- & Monitoring-Nodes (CMN).

External-Antenna Hack for TP-Link TL-MR3020

Hacking devices always comes with the risk of breaking them in the process, which makes it often undesirable to hack on something, when you know, that you only have one device you may need for production purposes. Luckily, cosmo had a look at the Apollo-NG Wishlist and donated one more TL-MR3020 for the cause and as a result, it was pretty easy to figure out how to connect an external antenna to the TL-MR3020.

HOWTO - GL-Inet 6416 External Antenna Hack

[gl-inet-6416-external-antenna-hack-9] Since a lot of people continue to show interest in hacking their ML-3020 with an external antenna it was time to show how to do it for the GL.Inet 6416. The following modifications can be done in 5-10 minutes, give you a stable RP-SMA connector and have been tested and running here on 5 units without any problems.

The DARC side of Munich

When you live in Munich and use public transportation, especially Buses and Trams, you will have noticed that during the last couple of month a lot of new displays appeared at almost any station which had no real-time info display before. They obviously have no cables/connections and no visible antennas, so I kept wondering: