Oct 20, 2022Revenge of the WhitefishLast spring (2022–04–10) I was activating WWFF reference in a small municipality in Finland called Siikajoki. That day I only got 22 contacts which was not enough for getting the activation point. So I had to come back. And this is that story: The comeback. The Revenge. …Ham Radio2 min readHam Radio2 min read
Apr 13, 2022WWFF Ninja Activation in HiastinlahtiNinja Activation: Go to site, seen by nobody, have QSOs. Then leave no trace and vanish. Nobody knew about your activation before logs hit the servers. 😎 Today I drove about 30km north to a Natura 2000 nature protection area. The purpose was to scout the area for possible future…Ham Radio2 min readHam Radio2 min read
Apr 13, 2022Sunday WWFF activationToday’s ham radio WWFF activation headed to a small municipality in Finland called Siikajoki with a population of 5024 people and population density of 4.78/km². Siikajoki was a scene for two battles of year 1808 where Sweden and Russia fought for control over Finland (the Finnish war). …Ham Radio3 min readHam Radio3 min read
Nov 10, 2021Overnight ham radio activation in Hailuoto, FinlandOur operation was in Hailuoto, a small island (200.53 km²) in the Gulf of Bothnia with a population less than thousand people. Together with Julian, OH8STN, we operated from protected flora & fauna (Natura2000) site. This is my story about our overnight expedition. We departed to catch the 11:00 ferry…Ham Radio4 min readHam Radio4 min read
May 10, 2021Ham radio activation in Hailuoto, FinlandOur operation was in Hailuoto, a small island (200.53 km²) in the Gulf of Bothnia with a population less than thousand people. This is my story about our expedition. The day started by packing the car and catching the ferry departing 10:00 local time. We arrived early to our benefit…Ham Radio3 min readHam Radio3 min read
Published in SensorFu·Jan 26, 2021Internet Protocol Next Header escapeIn IPv6 header it’s called “Next Header” and in IPv4 header it’s just “Protocol”. This eight bit value contains information about what kind of content we can expect after the IP header. Usual suspect being a value for all familiar TCP, UDP and ICMP. But there’s also other familiar protocols…Infosec3 min readInfosec3 min read
Published in SensorFu·Dec 9, 2019How we turned 5G into 5kHacking is a good way to learn and hackathons are a great place to learn with other like-minded people. And that was exactly what we had in mind when we invited our friends and signed in as a team to the first 5G hackathon in the world. We had no…Hacking4 min readHacking4 min read
Jan 4, 2019110 m/s towards a planet!This is a short story about a survival scenario I played in the game Space Engineers by Keen Software House. I got inspiration to play this through after someone said the “Space Suit” respawn option for survival shouldn’t be there since it’s only useful for creative mode. …Short Story7 min readShort Story7 min read
Published in SensorFu·Jan 16, 2018Using static typing to protect against code injection attacksCode injection attack is a method of taking advantage of a flaw where an application can be tricked to relay malicious code from a system to another system which then executes it. Common examples of such flaws are SQL injections and cross-site scripting (XSS) attacks. In OWASP Top 10 Most…Programming3 min readProgramming3 min read
Published in SensorFu·Jan 3, 2018Continuous testing but with irregular scheduleTesting a network or service availability continuously has the benefit of getting an alert as soon as something changes or breaks. Many networks and services are monitored with for example a cronjob running every hour. We pondered how fast we should test and what should the test interval be. Our…Testing2 min readTesting2 min read
