Useful tips for everyday
What does Detrending a series do? Detrending is removing a trend from a time series; a trend usually refers to a change in the mean…
What is digital mode radio? Most amateur digital modes are transmitted by inserting audio into the microphone input of a radio and using an analog…
How can I share my Android screen with PC wirelessly? To cast on Android, head to Settings > Display > Cast. Tap the menu button…
What is a spectrum analyzer used for? A spectrum / signal analyzer measures the magnitude of an input signal versus frequency within the full frequency…
What does the apply operator do? The APPLY operator allows you to join two table expressions; the right table expression is processed every time for…
Should I use different ssh keys for different servers? It’s good practice not to use the same key for different services. Keys are useful so…
Why is cron not working? Root Cause One of the most frequent causes for the crontab job not being correctly executed is that a cronjob…
How do you create a virtual device in Android Studio? In Android Studio go to “Tools (Menu Bar) >Android > AVD Manager. Click on the…
Can you combine reminders and calendar? Use the Google Calendar app. It’s absolutely the best way to sync reminders and calendars across both platforms. You…
Is teletype still used? Teleprinters are still widely used in the aviation industry (see AFTN and airline teletype system), and variations called Telecommunications Devices for…