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uhf-satcom.com | ||
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www.paulvdiyblogs.net
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| | | | | Raspberry Pi Electronics DIY Hobby Design Test & Measurement HowTo Build | |
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sosna.de
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| | | | | Intro I was interested in it for quite some time and now got myself a Home and amateur (ham) radio license. This allows me to build radios, antennas and other equipment as well as to use it on the air. The first radio I build was a kit, a QDX - Digital Transceiver. This transceiver allowed me to work multiple bands, 80m, 40m, 30m and 20m. I knew from the documentation a bit about the propagation, pros and cons, but could not decide which ones I would really like to dig into deeper. | |
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tbspace.de
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| | | | | QO-100, also known as Es'hail-2 is a geostationary amateur radio satellite. It can be used by large parts of the world, including Europe, Africa, (parts of) South America and Asia. The satellite works as a linear transponder. It receives a specific range in the 2.4 GHz (13cm) band and sends it back to earth on 10 GHz (3cm). In order to generate such a 2.4 GHz signal and transmit it to the satellite conventional radio technology with transverters could be used. I chose a different route and planned a fully software-defined setup. This has many advantages: - Cost (PlutoSDRs can be bought for ~120?) - Low power consumption (laptop, SDR, amplifiers), ideal for portable usage - No SSB transceiver needed - Software DSP processing for very clean signals - I/Q sampl... | |
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cybergibbons.com
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| | | STMicroelectronics STM32 processors are some of the most common ARM microcontrollers we see in IoT devices. We often want to read the firmware from these so we can examine it and find any vulnerabi... | ||
