SQ9P @_sq9p
Building things with RF, big antennas, and questionable ideas - https://t.co/2tG7jRmON1 Ruda Śl Joined June 2025-
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Balloon with Stefan v2 tracker just launched by SP9ADC from Piwniczna-Zdrój Frequencies SSTV 433.400 MHz Horus 4FSK 437.600 MHz APRS AFSK 432.500 MHz APRS LoRa 434.855 / 433.775 MHz
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Yep, yet another SDR transceiver. My first board, full of hardware issues but slowly getting there. Based on ESP32 with WiFi. I wondered if a browser could handle baseband processing - and it does! FFT and SSB, AM, FM mods and demods running fine in java script, even on android
Just finished a new revision of my DTMF controlled simplex repeater (parrot) board. Now its more user friendly with usb, minijack and screw terminal connectors. PCBs and firmware port should be ready in mext month.
Two years ago I repurposed my old cat tracker into a stratospheric balloon tracker. It's a 4 in 1 unit: #APRS, #LoRa, 4FSK, and #SSTV. I’m bringing it back online after a long pause and getting ready for another flight. sq9p.com/en/projects/ba…
Hi 0 followers 👋 Just started a blog about radio + RF software stuff. First post: FSK modulation basics. sq9p.com/en/how_it_work… #RF #softwaredev #embedded #hamradio
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