Emergency Hardening for PHP CVE-2026-109618 and CVE-2026-109619 on a Legacy Apache Server PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. In some contexts, request memory is temporarily reachable before it is fully initialized. If any allocation fails at that point, Read more
Mulled Wine Temperature Tracker Monitoring and maintaining a precise temperature is crucial when preparing mulled wine to preserve its rich flavors, aromas, and alcohol content without boiling away its core characteristics. This article presents a comprehensive thermal analysis and monitoring overview of an automated mulled wine boiler system, utilizing logged Read more
To zig be or not to zig be ? The good, the bad and the ugly – R.F. + wired sensors Not = Love ! How to migrate from dallas DS18B01 to zigbee sensors This is my story about moving away from wired Dallas temperature sensors to wireless Zigbee sensors Read more
PDF Exploit CVE-2026-34621 custom CVE-2026-34621 ClamAV signature CVE-2026-34621 Adobe has released a security update for Adobe Acrobat and Reader for Windows and macOS. This update addresses a critical vulnerability. Successful exploitation could lead to arbitrary code execution.  Adobe is aware of CVE-2026-34621 being exploited in the wild. Test I have done Using Read more
Raspberry Pi Pico 2 Pico 2 Wireless Problems with multiple Dallas DS18B20 sensors Initial setup 1 6 x Dallas DS18B20 sensors 2.2 Kilo ohms for Data line 2 Wifi enabled Just about 10 meters away 3 MicroPython code MicroPython (RP2040) Symptoms 1 Erratic Wifi connection Requires plug / unplug 5V Read more
2 elements Half Square antenna, 40 Meters band @2025: Rebuild it using T94-6 toroids as switchable inductances instead stubs. This year, a 12-16 dBÂ F/B ratio was observed. Will be fully tested in CQWW CW 2025. @2024: Good value for a simple antenna. F/B ratio is not even a 6 Read more
CQ Word Wide CW – 2024 Single operator single band, Assisted High Power 40 Meters Hardware 2 Elements Half Square antenna More info Home made QRO Icom IC-7300 transceiver Not my best health shape, only 20 Hours operating time this year. One QRO exhaust fan had a sudden blade misalignment Read more
RXP2600: Contest TCVR – HIGH Performance CW only Superhet + SDR 9 Mc IF + 2 xAD603 + FST3125 IQ detector H-mode mixer FSA3157 +Â ET1-6TSM20 Low cost D.D.S. Si5351 + custom low pass filters Hilbert digital F.I.R. Teensy 4.1 with custom code. Digital sampling A.G.C. Arduino nano + AD8307 Read more
SO2R bandpass filters For Multi-Multi or SO2R operations, quality bandpass filters are needed. Not only produced harmonics have to be rejected, but any below frequencies also, to minimize distortions produced by receiver itself in presence of strong outband signals. SO2R filters 121 dB attenuation Low cost Easy to build Alignement Read more
YO8RXP radio shack — Home made building Hardware 98% Software 99% Shack construction 96% Electric floor heating Xiaomi BLE   Wired Dallas DS18B20 temperature sensors will provide inside climate feedback towards Raspberry PI, which via power relays and contactors will start / stop about 20 square meters of Magnum heating foil Read more