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 […]
Radio Amateurs
75 posts
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 […]
Complete list of ham prefixes This list contains all (or at least almost all) prefixes that can be heard on the radio amateur airwaves as of March 9, 2024. The list has been collected and maintained for years. I hope it will be useful to many fellow radio amateurs. The […]
Complete list of radio amateur codes, abbreviations and expressions I do not claim that it is absolutely complete, I can only claim that it is the complete list that I have heard in my activity as a radio amateur (the last 50 years of my life). Code Meaning Notes . […]
Extending the transmission range Backstory Some time ago, a friend and radio amateur (I’m not writing who he is, because I haven’t asked him if he can) shared that he can’t broadcast on part of the 60m range. He assumed that his Yaesu FTDX-10 transceiver, because it was prepared for […]
Firmware Update of FTDX-10 That sounds scary, but it’s not. Or at least it’s not until something goes wrong – like cutting out your electricity at that very moment. But let’s not be pessimistic… If everything is in order and you follow the procedure, nothing bad should happen. Updating the […]
Two completely redundant settings for FTDX-10 But everyone wants to do them first Do we need to do these two completely redundant settings for FTDX-10? The first is a custom power-on screen. Who doesn’t want to personalize their new radio by having it display their name or call sign? There […]
My Latest Radio Contacts This is an excerpt from QRZ.com for the radio links made by me (Tony, LZ3AI). My latest radio contacts (QSOs) are usually not the last. The sample itself is real-time and shows the latest uploaded to QRZ.com, but not the last ones made and reflected […]