The article deals with the use of two-way radios of the permitted range PMR 446 MHz, their characteristics, and their features. Demonstrated typical samples of walkie-talkies. Answers to the most frequently asked questions are provided:
What is meant by PMR446?
What are the PMR frequencies?
What is the power of PMR radios?
What is a Table (grid) of frequencies?
Why is a frequency grid required? Why can’t frequencies be used directly?
How to use the frequency table?
What are CTCSS and DCS encodings and what is it used for?
Are the PMR446 radios compatible with other civilian radios (CB radio)?
What is the typical range of walkie-talkies in the 433 MHz LPD or 446 MHz PMR band?
How can I increase the communication range in the LPD 433 MHz or PMR 446 MHz band?
Do walkie-talkies LPD 433 MHz and PMR 446 MHz work indoors?
Is it better to be indoors or outdoors to achieve maximum communication range?
Why can I read (listen to) others, but no one hears me?
Can PMR 446 MHz walkie-talkies be used as a base (dispatch, control room) radio?
Where can I buy high-quality and inexpensive walkie-talkies in the PMR446 range?
What is EcoBonus (EcoBonus 2021-2023) for purchasing drinking water filtration systems? How can you save on buying drinking water filters using Bonus acqua potabile? Who can use EcoBonus 2021-2023 to buy a drinking water filter? Why is buying a drinking water filter a good idea, especially now? Is it difficult to install a drinking water filtration system? What is the procedure for receiving a bonus for purchasing a drinking water filter?
The article discusses various aspects of saving on the purchase of a drinking water filter through the use of the Bonus provided by the Italian budget for 2021-2023.
How to choose an under-the-sink drinking water filter (purifier)? What is the difference between flow filters for drinking water? What is the difference between the cartridges used in Aquaphor Crystal systems? What should you pay attention to when using a flow-through filter? Frequently asked questions from buyers and users of Aquaphor Crystal water purifiers.
The article examines and compares various types of household flow-type drinking water filters for installation under the kitchen sink or counter, their differences, and their advantages.
In one of the previous articles, we looked at various devices and systems for the purification of drinking water. We have made sure that even “potable” tap water, which meets basic standards, should be purified – for safety and comfort purposes. In another article, we showcased different reverse osmosis filtering systems, which have the most perfect degree of purification (about 99.9%). Now we will examine flow-through filtration systems – simple, but quite effective.
This article provides an overview of an inexpensive, simple and practical CB radio communication transceiver for installation in a car or truck to communicate with fellow travelers, work colleagues or hobbyist radio enthusiasts.
From the previous article, we know that the CB radio is the most affordable way of operational communication for personal, family, professional and other applications. Now we will look at one of the most interesting budget transceivers for installation in a car.
This article provides an overview of an inexpensive, simple, and practical CB radio kit for installation in a car or truck to communicate with fellow travelers, work colleagues, or hobbyist radio enthusiasts.
From the previous article, we know that the CB radio is the most affordable way of operational real-time communication for personal, family, professional, and other applications. Here we will look at one of the most popular kits for installation in a car, consisting of a two-way radio (transceiver) and a magnetic antenna.
The article examines and compares the various types of home reverse osmosis filters for installation under the kitchen sink, their differences and advantages:
👉 classic 10-inch 5-stage RO under-sink kitchen systems;
👉 compact monoblock RO system Morion DWM 101 S;
👉 super-compact reverse osmosis filter Aquaphor DWM 312,
How to reduce the risk of infection: the article discusses the various positive effects of filtering drinking water at home during the spread of infections and epidemics of diseases caused by bacteria and viruses, in particular, corona-virus.
In one of our previous articles, we examined various devices and systems for treating drinking water. The question was also considered there – why is it necessary to purify even “drinking” water from the tap.
Now we will focus on the question – how household filters for drinking water purification can be useful during the spread of infections, epidemics (pandemics) of respiratory diseases caused by various pathogens (bacteria and viruses). Since this article was written during the mass distribution of the coronavirus COVID-19, this virus will be considered in more detail.