Learn what an inductor is and how it works in this basic electronics tutorial course. First, we discuss the concept of an inductor and explain the physics behind how the magnetic field inside of the inductor coil can store energy.
This video discusses the basics of ferrite beads, and their uses for basic filtering applications. It discusses and demonstrates how ferrites act as resistors at high frequencies, and how this is used for EMI/RFI Suppression, improved power supply filtering, parasitic oscillation suppression, and others. The affect of the frequency dependent resistive characteristic of the ferrite beads is demonstrated by showing its effect on a swept RF signal, its effect on the rise/fall time of a digital signal, and its effectiveness of eliminating parasitic oscillation.
This tutorial video gives the basics of the typical amplitude units used on a spectrum analyzer. It gives a basic description of the electronic definition of the decibel (dB), some of the properties of the dB, why it is used. It describes that the dB is a relative measurement. These relative measurements can be expressed as absolute measurements when a known reference is used/implied. This is where the terms dBm, dBu, dBmv, etc. come from. Finally, the term dBc is described. Each of the descriptions is followed with practical examples and demonstrations on an oscilloscope and spectrum analyzer
This video explores baluns and gives demos. A balun is a device to convert a balanced transmission line to an unbalanced transmission line and vice versa.
Let me show you how to write a DMR codeplug from scratch and how to import contacts into the software with the N0GSG Contact Manager
What is a reflector? What is a talkgroup? In this video, I will give you a very basic explanation to hopefully make a lot of sense. These words are always flying around, and a lot of people have no idea what they are.
Manual antenna tuners are less expensive than the automatic ones, and are perfectly okay for your station. This video shows how to tune a manual antenna tuner, both with an external SWR meter and with the SWR meter built into your transceiver.
There are many antenna tuners out there that use a roller inductor and 2 variable capacitors to form a T-match. Here is a demonstration video on how to use a roller inductor type tuner to match your antenna to your ham radio transmitter or transceiver. Keep in mind that a tuner only makes the radio happy so it can transfer full power output into the antenna system, however, that does not always mean your antenna will preform well. It is always best to use the best type of antenna for the frequencies being used to start with, then use a tuner if needed to extend use to nearby frequencies. Here I am using a MFJ VersaTuner 5.
. In this video, i have explained Ground Wave Propagation by following outlines: 1. Ground Wave Propagation 2. Definition of Ground Wave Propagation 3. Basics of Ground Wave Propagation 4. Frequency Range of Ground Wave Propagation 5. Advantages of Ground Wave Propagation 6. Disadvantages of Ground Wave Propagation
This short video describes how to use IRLP or "Internet Radio Linking Project" to connect to other IRLP repeaters Worldwide. Any radio that has a DTMF feature can use IRLP. In this video we connect to IRLP node 6789. According to the IRLP website it is recommended to say cq (just not cq cq cq like on hf) to attempt a contact over irlp rather than just saying "listening" or "monitoring" Also helps to state your location.
Setting up my first Allstar node with a modified Baofeng UV-82. In this episode I talk about which hardware is needed, and which OS I currently use.
. Jim, W6LG, tests RG8X and RG213 for loss. The results are very interesting. Everything goes great until it starts to snow.
So this is a very popular question among my audience, due to my recent videos explaining some hotspots and reflectors. Hopefully you get some information from this video
This is Part 1 of the webinar series covering the History of WiRES-X, what is needed to run a WiRES-X node, and how to quickly get on the air.