nico.ninja A deep dive journey about electronics, computers, radio and so on

  • RadioBerry on a Yaesu FT-80C

    A note for the readers: This project is fully documented (from a technical perspective) in reynico/radioberry-setup Shortly after finishing the Vertex VX1700 RadioBerry build, my dad showed up at the workshop with a Yaesu FT-80C he had stored away for years. The radio was fully working - nothing wrong with...


  • RadioBerry on a Vertex VX1700

    A note for the readers: This project is fully documented (from a technical perspective) in reynico/radioberry-setup Mid last year, my father introduced me to RadioBerry, an open-source FPGA-based Raspberry Pi Hat platform for HF SDR transceivers (0 to 30 MHz). The board uses an AD9866 modem chip and an Intel...


  • Leverage

    I first learned about the concept of a lever when I was a kid, working on a construction site. Despite being a hostile job (especially for a young person), having to carry construction debris with a wheelbarrow (a second-grade lever) or mix cement with a shovel (a third-grade lever) made...


  • What are you obsessed with?

    A few weeks ago, I was walking through Parque de El Retiro in Madrid with my friend Manu. During our 1:30-hour walk, we discussed many interesting topics, one of which sparked my ideas: obsession. What are you obsessed with? Obsession is a great driver for accomplishing complex and intricate goals,...


  • Testing a band-stop filter

    Whenever I mount an SDR to listen in the 144-148 MHz band, I try to filter out the broadcast FM signals. This is due to the lack of proper filtering or channelization in the Software-Defined Radio receivers I use. The filter I use most is one described in the LNA4ALL...