Today, many people want to buy city radios for different goals. For example, walkie-talkies are very popular with airsoft players – they are a great opportunity to coordinate actions to demonstrate maximum efficiency in battle. They can also be a good choice for builders, security guards, drivers, and many other people. But you have to be careful about choosing a suitable walkie-talkie.
The principle of operation of the device is based on the amplification of weak natural night light (moon, starry sky) by an electron-optical converter. Baigish-6U is a II generation night-vision device and is equipped with two eyepieces that converge into one optical axis. The device has one lens and one electron-optical converter. Passing through them, the beam of light bifurcates and enters both monoculars. So we get a stereoscopic image as if we were looking at binoculars. The image is more realistic, and the eyes are less tired.
Why using a mobile phone is not the best idea when you go skiing in the mountains? Firstly, the cellular…
If you haven’t heard already there are two types of prisms among many others. The BAK-4 and the BK-7. We…
Baigish 12 AC Night Vision Binoculars is a 2.8x night vision device (NOD). It is made in the form of…
While binoculars may not seem very complicated and easy to buy there is a lot more that goes into it…
If you are faced with the need to choose binoculars, then you probably already noticed that modern binoculars have either…
The LPD (Low Power Device) channels are dedicated for civilian communication within the UHF frequencies, as much as PMR446, another…
PMR (Personal Mobile Radio) – is a standard for unlicensed radio communications, used in Europe, but prohibited in the United…
Jump to LPD 433 MHz Jump to PMR 446 MHz A walkie-talkie is a remarkable way to communicate through the…
Radio stations became widespread during World War II when the need for fast communications over long distances increased. In those…
Picking up a two-way radio for the first time? it’s quite tricky to figure out how to talk through this…
A refractor, or a lens telescope, is the oldest type of telescopes. It was invented in 1609 by Galileo Galilei…
Catadioptric telescopes are compact with high optical capabilities. Since a light beam refracts several times inside the optical tube before…
In 59 years after Galileo`s discovery, Isaac Newton designed the first reflecting telescope, based on the scheme of Scottish astronomer…
Bresser Binoculars 8×40 is a very bright image, perfect for dusk. Wide field of view. Rubber cover. Binoculars Bresser Hunter…
Wide field of view and prism BAK-4. Durable, hard to break. Cheap. Easy to adjust. Metallic Russian Baigish binocular KOMZ…
Barlow lenses were invented and developed by Peter Barlow and consequentially bear his name. The lenses are not only used…
Every telescope can be chosen on the basis of two criteria because one of the main characters that will be taken into account is either aperture or focal length. Aperture in a telescope is the objective length diameter when it is referred to a refracting telescope or the primary mirror when it is referred to reflecting telescope. So, if you switch to greater focal length, it is clearly better to observe remote objects in space such as the Moon, planets, etc. or if you require better observation of DSO (deep space objects) such as galaxies getting a device with greater aperture figures is better.
There are several types of telescope mounts that can be purchased today. Every type serves specific needs and purposes and…