Designing a portable SDR system1
This article is a follow up to the submission I made to the SWLing Post a little while ago. In short, the idea was to combine the FunCube Dongle Pro+ USB-based software defined radio (SDR) with an 8" Windows tablet running SDR# to have a portable, on-the-go SDR solution.
|The original inspiration|
Tablet radio interference
|Heros Technology galvanic USB isolator|
Additional power for the SDR
|USB Y cable|
Yet more interference
Cost vs Portability
|Figure 1. Radio components|
|Figure 2. Antenna components|
|Figure 3. Packing the components into an 11" carrier bag|
|Figure 4. Ready to go|
|Figure 5. Portable SDR setup in action in a local park|
At one point I wanted to build an enclosure to house the FunCube dongle, the power supply and the USB isolator in a single tidy unit, but I no longer see the need. It's easy to pack all of those items into the carrier bag and also they are all useful individually: the USB isolator can be paired with other SDRs, and I recently discovered a neat additional use for the Gomadic battery pack.
Well, that brings me to the end of this post. I hope my design will inspire you to come up with your own portable SDR system, and that you will share your results with me in the comments section. Happy listening!