iiinova — where your digital self keeps evolving

Electronics Notes by Ian Poole @elecnotes.bsky.social · 19/09/2026

In case you missed my post yesterday, check out my latest video. Don't Buy a Morse Key Until You See This: Xiegu VK6 Tested youtu.be/BMNEAx2D56M #hamradio #amateurradio #hsmr #morsekey #morsecode

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 11/09/2026

Why is gold used in so many connectors if it is not the best conductor? Find out in my website article : www.electronics-notes.com/articles/ele...

160

Electronics Notes by Ian Poole @elecnotes.bsky.social · 07/08/2026

How many MLCCs are made each year - can you guess? The number will surprise you until you realise that they’re in virtually every piece of electronics today. Can guess, or better still watch my short video: youtube.com/shorts/U6zZC... #mlcc #capacitor #capacitors #electroniccomponents

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 06/08/2026

Who remembers the pirate radio broadcast stations that were popular around the UK and other places in the 1960s? Discover more: www.electronics-notes.com/articles/his...

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 24/07/2026

Is the TIDRADIO TD-H3 Better Than a Baofeng? I recently bought a TIDRADIO TD-H3 - it’s a great little radio: USB-C charging (& programming) bright display, and Bluetooth programming from your phone. A great radio - find out more: youtube.com/shorts/dH5MD...

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 26/06/2026

Bluetooth Explained: How It Works to the Viking Connection We use Bluetooth connectivity everyday, but how exactly does it work. Also what are the Viking and Hollywood connections ? youtu.be/KOOXkRa3big #Bluetooth #electronics

030

Electronics Notes by Ian Poole @elecnotes.bsky.social · 05/06/2026

Was the Transistor Nearly Named the Iotatron? #transistorhistory #iotatron #techhistory youtube.com/shorts/zolY5...

030

Electronics Notes by Ian Poole @elecnotes.bsky.social · 07/04/2026

Move Over UV-5R: There’s a New King of Budget Radios. Check out my video to find out more: youtube.com/shorts/vt1RZ... #hamradio #amateurradio

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 23/03/2026

What V/UHF Budget Hand Portable Transceiver would You Choose? Years ago there was just the Baofeng UV-5R - now there are others. Get all the information: www.electronics-notes.com/store-shop/h... #hamradio #hamr #amateurradio #handportable #electronicsnotes #electronics

110

Electronics Notes by Ian Poole @elecnotes.bsky.social · 24/02/2026

Resistor Colour Codes 101 Do you ever get confused reading resistor colour codes. Check out more YouTube short video to find out more: youtube.com/shorts/A2nh4... #resistors #resistorcolorcode #resistorcolourcode #electronicsnotes #electroniccomponents #electronicsengineering

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 20/02/2026

Explore the fascinating history of the Morse telegraph: how it started and revolutionised communication across the distances, linking continents via undersea cables, and served as a lifeline for global shipping. Check it out now: www.electronics-notes.com/articles/his... #morse #morsetelegraph

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 13/02/2026

Want to understand about the different ceramic capacitor dielectrics? Check out my ‘Concise Guide to Ceramic Capacitors & Their Dielectrics’' Find out more: electronics-notes-shop.fourthwall.com/products/a-c... #electronics #capacitors #ceramiccapacitors #ebook #electroniccomponents

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 11/02/2026

Op Amps:- Why Are They So Useful In this video I take a look at why operational amplifier, or op-amps are so great and so useful. Watch my video now: youtube.com/shorts/YY8IX... #opamps #operationalamplifiers #circuitdesign #analogdesign #hardwaredesign #electronicsnotes #electroniccomponents

110

Electronics Notes by Ian Poole @elecnotes.bsky.social · 08/02/2026

MOSFET vs. IGBT – Understanding the Giants of Power Electronics IGBTs & MOSFETs are both big players in power electronics & these two types of device can be considered as rivals but it’s necessary to select the correct option for each circuit. Discover: www.electronics-notes.com/articles/ele...

011

Electronics Notes by Ian Poole @elecnotes.bsky.social · 03/02/2026

Resistor Colour Code 101 - What You Need to Know In the video I provide all you need to know along with practical examples. Watch now: youtu.be/QhBJnPXN6L0 #resistors #colourcode #colorcode #resistorcolorcode #resistorcolourcode #electroniccomponents

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 20/01/2026

They were trying to invent a field effect transit instead they invented the point contact transistor. It was a great Christmas present for the bosses at Bell Labs as it was demonstrated just before the the festive season. Find out more in my YouTube short video: youtube.com/shorts/D9olB...

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 03/01/2026

How the Vacuum Tube Created Modern Electronics A very brief introduction to how the vacuum tube / thermionic valve founded what we call electronics today. Watch now: youtube.com/shorts/SnZAs... #vacuumtube #thermionicvalve #vintageradio #techhistory #historyoftechnology #electronics

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 01/01/2026

Why You NEED An Emitter Follower Check out my video now: youtu.be/fSki6td8L4c #electronics #circuitdesign #emitterfollower

110

Electronics Notes by Ian Poole @elecnotes.bsky.social · 28/12/2025

Brilliant Morse Code Coffee Mug Featuring every letter of the alphabet clearly displayed with its Morse code equivalent, it's perfect for showing off your passion for radio and communication. Buy yours now: electronics-notes-shop.fourthwall.com/en-gbp/produ... #merch #coffeemug #morsecode

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 05/12/2025

Why Metal Film Resistors Have Inductance In this video I explain why these resistors have inductance and where they can be used. Check out the video now: youtu.be/XNyl0Pxas64 #resistors #inductance #metalfilm #electroniccomponents

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 04/12/2025

Does the Beverage antenna have any uses these days, or is it obsolete? Find out more about the antenna, its advantages & if it has any uses today. Discover: www.electronics-notes.com/articles/ant... #antennas #hamradio #hamr #amateurradio

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 01/12/2025

Exploring Electrolytic Capacitors - all the essential information Understand the essentials of electrolytic capacitors, discover their benefits & understand how they can be used to provide high levels of capacitance with high reliability. More: www.electronics-notes.com/articles/ele...

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 29/11/2025

Understanding Transistor Current Gain Notations 101: beta, hfe hFE Check out my video now: youtu.be/DcfExBrI8Cw

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 25/11/2025

Why the OC71 Transistor is a Big Deal This transistor was an iconic electronic component of the 1960s. Find out all about it in my video: youtube.com/shorts/AHCmo... #OC71 #transistor #vintageradio #electroniccomponents #techhistory #historyoftechnology

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 18/11/2025

1N5822 Schottky Diode I’ve just released the YouTube Short version of my 1N5822 video. In this short I provide some of the basic details of this popular diode. Check out the video now: youtube.com/shorts/AzRTi...

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 11/11/2025

How to Clean Away Battery Corrosion and Get Gadgets Working Again In this video I show you how I cleaned up an old battery powered clock where the battery had leaked and brought it back to life. Check out the video now: youtu.be/JXIT_CWEmN8

040

Electronics Notes by Ian Poole @elecnotes.bsky.social · 09/11/2025

Understanding how the Superhet / Superheterodyne Radio Works Check out my video to gain a good understanding. Watch now: youtu.be/dk6DdG4vs4Y #superhet #superheterodyne #radio #amateurradio #hamradio #hamr

030

Electronics Notes by Ian Poole @elecnotes.bsky.social · 04/11/2025

CAPACITORS 101: the Mysteries Unravelled In my YouTube short I give a quick overview of capacitors and what they are. It’s a great introduction to find out what they are with a link to a longer form video. Check out my video now: youtube.com/shorts/UC_7g...

030

Electronics Notes by Ian Poole @elecnotes.bsky.social · 29/09/2025

Transistor Circuit Configurations Infographic: common base, collector & emitter Check out this infographic now: www.electronics-notes.com/articles/sum... #transistor #circuitdesign #commonemitter #emitterfollower, #commoncollector #commonbase #electroniccomponents

040

Electronics Notes by Ian Poole @elecnotes.bsky.social · 29/09/2025

I'm delighted to say that my YouTube channel has just gone through the 55k subscribers barrier. Check out my channel now: www.youtube.com/@Electronics... #electroniccomponents #youtube #videos

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 16/09/2025

The Early Effect in Bipolar Transistors: A 101 Overview The Early effect in transistors is not often thought of, but it can have a major impact on bipolar transistor performance. Discover more: www.electronics-notes.com/articles/ele... #earlyeffect #transistors #electroniccomponents

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 15/09/2025

Gallium Nitride GaN FETs & HEMTs: what they are & how they work. Did you know that GaN FETs use a 2D electron gas, 2DEG as the basis of their operation. Effectively the GaNFET is a HEMT. Discover the full story: www.electronics-notes.com/articles/ele...

030

Electronics Notes by Ian Poole @elecnotes.bsky.social · 14/09/2025

Who Knows what a BARITT Diode is? The BARITT diode Barrier Injection Transit Time diode is a device used for generating microwave signals from a single diode. Find out more: www.electronics-notes.com/articles/ele... #BARITT #diode #microwaves #microwavediode

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 09/09/2025

Op-amp Mugs Amplify the Potential of Your Coffee Break I've launched a series of three coffee mugs with the essential op-amp circuits on them. Each mug has two circuits, one on each side. Check out my video for more information: youtube.com/shorts/WzbWG...

100

Electronics Notes by Ian Poole @elecnotes.bsky.social · 01/09/2025

What Makes IQD IQXC-240 Quartz Crystal Resonators So Great? In this video I take a look at this amazing but very small quartz crystal resonator. youtube.com/shorts/3Ulgl...

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 15/08/2025

Stylish Vintage Valve / Vacuum Tube Coffee Mug This stylish coffee mug features three vintage vacuum tubes or valves including an R-Type valve which was first introduced in 1916. Buy one new from my online shop: electronics-notes-shop.fourthwall.com/products/vin...

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 02/08/2025

Battery Types & Technologies: a primer There are various different technologies for electrical batteries and cells both rechargeable and non-rechargeable and understanding how they work can enable them to be used more effectively. Discover: www.electronics-notes.com/articles/ele...

030

Electronics Notes by Ian Poole @elecnotes.bsky.social · 27/07/2025

What is Bit Error Rate, BER Bit Error Rate, BER is a key parameter for measuring the performance of a data wired or wireless data channel. Discover: www.electronics-notes.com/articles/rad...

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 27/07/2025

Morse Code Coffee Mug Bring some communication to your coffee time with this amazing Morse Code Coffee Mug. The mug can show off your interest and passion, and it is sure to spark a conversation. Buy one now: electronics-notes-shop.fourthwall.com/products/mor...

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 27/07/2025

Rhombic Wire Antenna Explained One of the antennas that have been used in the past and to which many radio amateurs aspire is the rhombic antenna. Discover more: www.electronics-notes.com/articles/ant... #antennas #rhombic #amateurradio #hamradio

130

Electronics Notes by Ian Poole @elecnotes.bsky.social · 23/07/2025

Ohm's Law Ohm's Law states that the current flowing in a circuit is directly proportional to the applied potential difference and inversely proportional to the resistance in the circuit. More: www.electronics-notes.com/articles/bas...

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 15/07/2025

Britain's Secret WW2 Electronic Component Lifesaver Second to the magnetron, this component was probably the most important electronic component that saved Britain in the face of attacks from the Nazi Luftwaffe. Discover the complete story in my video: youtu.be/AKMH-BPtrCw #Vacuumtube

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 15/07/2025

Transistor & Diode Part Numbering Codes There’s a surprising about the transistor performance that can be learned from many part numbers. Discover more: www.electronics-notes.com/articles/ele... #transistors #jedec #proelectron #electroniccomponents

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 12/07/2025

Sporadic E, Es Propagation Sporadic E propagation is sporadic & unpredictable by nature, but it enables radio signals to travel over much greater distances & often at higher frequencies than would normally be possible via the ionosphere. More: www.electronics-notes.com/articles/ant...

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 01/07/2025

FET Types Infographic I've developed an infographic which shows the various basic types of FET that are available. Download the full sized infographic: www.electronics-notes.com/articles/sum... #infographic #FET #FETtypes #electroniccomponents

000

Electronics Notes by Ian Poole @elecnotes.bsky.social · 28/06/2025

I’ve just received the sample of my Morse Code mug, and I’ve released for sale. I think it looks really good, but check it out for yourself. It is available in three sizes: 11oz, 15oz, and a large 20oz. Check it out: electronics-notes-shop.fourthwall.com/products/mor... #morsecode #mug

020

Electronics Notes by Ian Poole @elecnotes.bsky.social · 28/06/2025

Discone Antenna Explained The Discone antenna provides a wide bandwidth with an omnidirectional radiation characteristic, making it ideal as a VHF / UHF scanner antenna or for military & monitoring activities. More: www.electronics-notes.com/articles/ant... #antennas #discone #widebandantenna

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 26/06/2025

Understanding Ultra-wideband, UWB: a basic 101 introduction Ultrawideband is a technology that has been growing in importance in recent years. Discover now: www.electronics-notes.com/articles/rad... #UWB #ultrawideband #automotive #radar

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 25/06/2025

Electromechanical Relays are Still Useful in Today’s Semiconductor Era. Despite the fact that semiconductor switches can be used in many areas, the electromechanical relay still has many areas where it excels. Discover: www.electronics-notes.com/articles/ele... #electronics #relay

010

Electronics Notes by Ian Poole @elecnotes.bsky.social · 23/06/2025

How Can Ceramic Filters & Resonators Work For You? Ceramic filters use piezoelectric ceramic elements to provide a low cost, compact alternative to LC or quartz crystal RF filters for many radio frequency or RF systems. Discover more: www.electronics-notes.com/articles/ele...

000