QMX+ from QRP Labs: The small giant in QRP (160m – 6m) If you've ever dreamed of packing the entire amateur radio world from 160 meters all the way to 6 meters (the magic band) into a box the size of a sandwich and the weight of a pair of kebabs... I have good news for you! As a happy owner […]
Radio Electronics
6 posts
Wandering through the jungle of fast charging protocols: Why „powerful“ is not always „fast“. Once upon a time there were two wires and the most difficult part of charging was not to confuse plus with minus. Charging batteries today has nothing to do with that – along with plus and [...]
FNIRSI LCR-ST2 Master Class: A Practical Guide to Precise Measurements Unlock the full potential of the FNIRSI LCR-ST2 Smart Tweezers with my practical tips and experience. After going through the ins and outs of DeepVNA together, FTX-1F and FTDX10, it’s time to pay attention to a tool that has quickly […]
Car Leakage Current Typical values for leakage current (idle consumption) from a modern car battery are between 20 and 50 milliamperes (mA). Normal and maximum permissible values Ideal value: Anything below 50 mA is considered completely normal for most gasoline and diesel cars. This energy is needed to maintain the […]
Internal resistance of the car battery Internal resistance (Ri) is one of the most important indicators of the „health“ of the battery. FNIRSI HRM-10 is one of the measuring devices that can give a very good idea of the condition of a battery. In short: the lower the internal resistance, […]
The secret to long life: How to tell whether the battery is excellent, good or damaged by measuring internal resistance Internal resistance is one of the best indicators of the condition of a battery. It is like blood pressure for a person – it gives a lot of information about […]