Category: Articles

Repeater Contacts: All you need to know

If you don’t have a dense amateur radio network in your area and you are worried about your communication through the radio, then the repeater is for you. Repeaters have now become important pieces of equipment for communication in the amateur radio system. Repeaters enable portable and mobile stations to …

Autopatch: All you need to know

An Autopatch, one of the integral features of amateur radio, is used to facilitate the users in making free phone calls through a transceiver, which in turn is connected to a repeater. Using an Autopatch might sound overwhelming for new HAM radio users. Here is a detailed guide to become …

Radiograms: All You Need To Know

The popularity of radiograms is increasing with each passing day. The whole idea of its usage and implementation surely sounds fun. However, it’s important to understand the intricacies of it well too. The main component involved is a good radiotelephone, as it makes sending a radiogram as easy as ever! …

Noise Sources: All you need to know

Noise refers to any such signal which is undesirable, unpredictable, and random or causing a change in signals resulting in masking the desired information content. Noise sources are the origin of such noises. They can be further classified as follows: Communication Hardware noise sources Natural noise sources Man-made noise sources …

History of The RST System

Have you ever heard someone, over an HF frequency, say random three-digit numbers? If you are new to this, you might not have the slightest idea what those numbers mean. Let us clear you up on that. They are using the RST Reporting System. In the world of radio, having …

Simplex Channels: All You Need To Know

Amateur radio networks, also called ham radio networks are electronic communication systems that use radio waves. Ham radio operators interact either using their voice or Morse code. Today, there are around 675,000 ham radio operators in the USA (Source: How Stuff Works). Ham radio is a communication system that allows …

Fundamental Overload – All You Need To Know

Attaining overload performance and a decent signal while maintaining sensitivity is one major challenge of the radio receiver design. As the radio requires sensitivity to receive weak signals, overload performance is crucial. At the same time, it should manage strong signals sans overloading. As we increment the utilization of Bluetooth devices, …

Winlink – All You Need To Know

Ham radio specialists are famous for doing the coolest things. They help transmit television signals and communicate with people around the world using handheld transceivers. Another thing HAMS engages in is transfer emails on ham radio through a system called Winlink. This system is one of the best assets in …

History of ITU Phonetic Alphabet

If you’ve been around the HF bands, you must have heard stations spell out their information using words. Amateur radio operators use the phonetic alphabet to minimize confusion and provide clarity over the airwaves. Phonetics are especially useful in conditions where the band connection is poor. It’s a very common …

Dipoles – All You Need to Know

The dipole is the most common antenna configuration for amateur radio, specifically the half-wave dipole. The dipole antenna is inexpensive and effective. The dipole consists of two identical conductive elements and can be placed vertically or horizontally. Most dipole antennas look like a giant “T” sticking up out of the …

Radiation Patterns – All You Need to Know

Antennas are something that every active HAM radio enthusiast uses. They are necessary for your radio transmissions. It’s important to know how they work and which direction you are transmitting.  Every antenna is transmitting it’s signal but not necessarily in every direction. If you are experiencing trouble receiving signals or …

HAM Radio Antenna Fundamentals

When you broadcast a signal, the microphone creates a current which is sent to the antenna and creates a magnetic field around the antenna. When a voltage is applied, the magnetic field can then create an electric field. The electric field can then induce a magnetic field which can induce …

HAM Radio Electricity Basics

To talk about HAM radio electricity basics, you must know some basics of electricity. If you haven’t already obtained your Technician class license, you’ll need to know the basics to pass the first test and be able to do some math. Electricity begins with current, resistance, voltage and Ohm’s Law. …

What are Loop Antennas?

When you think of an antenna, you probably imagine a large conductive metal sticking straight up into the air.  A loop antenna is basically an antenna that comes back around instead of sticking straight up into the air. It doesn’t matter what shape the loop antenna is.  It could be …

What Are Ham Radio Repeaters?

For many HAM operators starting out, the first step is to obtain a license.  If you are good enough, you can take all three tests to obtain the extra license right away.  Most of us though will only obtain the Technician license starting out. With a Technician license you will …

CW Touch Paddles – Model P1PADK

Still using the old fashion, brass pounding, mechanical paddle? WHY?……. You could be sending code with the 100% reliable TOUCH PADDLE. Model P1PADK is a complete kit of parts and is a touch paddle only. It does not include the electronic keyer chip and associated circuitry. It is physically identical …

CW Touch Paddles – Model P5

DUAL TOUCH PADDLE CIRCUIT CARD  plus ELECTRONIC KEYER, with MEMORY   And   Gold Plated Paddles Mounted on PC Card Completely assembled. No Moving Parts or Contacts to Wear Out No Falsing Superior Response  PC CARD IS ONLY 2″ W x 1.25″ D x .6″ H HIGHLY RESPONSIVE WITH THE SLIGHTEST TOUCH    * SELF …

CW Touch Paddles – Model P1BS

AMBIC TOUCH PADDLE plus ELECTRONIC KEYER, with MEMORY Includes a Battery Saver Circuit and Battery Monitor. (Automatic shutdown) Press the “on” button and forget about turning it off. It shuts down by itself after 10 minutes if no paddles are touched. It also tells you when the battery or power source drops below …

CW Touch Paddles – Model P1K

TOUCH PADDLE AND ELECTRONIC KEYER …. IN ONE COMPLETE KIT and ASSEMBLY INSTRUCTIONS AVAILABLE WIRED (P1W) AND IN KIT FORM (P1K) All of our products use the highest quality PC boards, with silk screening and solder resist.   All kits are thru hole design except model P3SMD. Ultra Lite Touch – No pressure required    No …

CW Touch Paddles – Model P3NS

No Soldering Required DUAL TOUCH PADDLE CIRCUIT CARD   Thousand already sold!     Just add your own creative conductive metal paddle.      No Moving Parts or Contacts to Wear Out            No Adjusting Required           No Falsing Superior Response  ONLY 1.15″ W x .815″ D x .4″ H This small circuit card replaces standard mechanical dual paddles. Use anything …

CW Touch Paddles – Model P4

DUAL TOUCH PADDLE CIRCUIT CARD plus ELECTRONIC KEYER, with MEMORY  ON A 2.1″ X 1.2″ PC CARD Ultra Lite Touch – No pressure required      No Clicking Sounds – because there is Zero Paddle Movement and NO Contacts Less than 2mA of standby current Use any conductive metal object as you paddles.  Be creative!!!  Want a key that accurately …

CW Touch Paddles – Model P6

MiniTouch Paddles DUAL TOUCH PADDLES (no electronic keyer) Housed in a 3.5″ x 2″ x 1.5″ case.   Weight – Only 4.5 oz with 9V battery Solid Metal Mirror Finished Gold-Plated Paddles. Will not rust, oxidize, or corrode. No Moving Parts or Contacts to Wear Out         No Adjusting Required          No Falsing       Superior Response ONLY 2″ W x 3.5″ D x 1.5″ …

CW Touch Paddles – Model TT1

“TOUCH TAPPER”  HORIZONTAL PADDLE SET The next generation of Morse code touch paddles has arrived.   And it’s fun to use!!!   Remember when you were first learning your Morse code and you use tap the code on a desk top with your index finger and thumb? Now you can send code …

CW Touch Paddles – Model P1

DUAL TOUCH PADDLE CIRCUIT CARD  plus ELECTRONIC KEYER, with MEMORY  Runs Off 9V Internal Battery or 6-12VDC Wall-Wart Ultra Lite Touch – No pressure required No Clicking Sounds – because there is Zero Paddle Movement and NO Mechanical Contacts Less than 3 mA of standby current. That means a 9v battery will last over 300 hours …

CW Touch Paddles – Model P1PAD

DUAL TOUCH PADDLE   No electronic keyer, paddles only. Still using the old fashion, brass pounding, noise making mechanical paddle? WHY?……. You could be sending code with the 100% reliable TOUCH PADDLE. a Quiet, Smooth Touch. Read our product reviews on Eham and find out what so many other hams have realized. …

CW Touch Paddles – Model P3W

DUAL TOUCH PADDLE CIRCUIT CARD   Thousand already sold!   Just add your own creative conductive metal paddle.   No Moving Parts or Contacts to Wear Out  No Adjusting Required No Falsing Superior Response ONLY 1.15″ W x .815″ D x .4″ H This small circuit card replaces standard mechanical dual paddles. …

What Are QSL Cards?

A QSL card as it applies to HAM radio operations, is a written confirmation of a one-way signal being received over AM, FM, television, or shortwave radio. So what does this denote? Why would you want one? Read on and all will be explained! A Bit of Background If you …

What are DXpeditions

The term DXpedition refers to what is considered to be an ‘exotic locale’ by an amateur radio operator, or HAM radio operator. Another way to think about this, is as a holiday or trip where the end destination in mind is not necessarily visited for its local culture or its …

UHF versus VHF Radio Spectrums

Many people who have never picked up a police scanner are completely unaware of all the messages that are flying past them at any given time. They are completely oblivious to the fact that, even as they busy themselves with other things, signals being sent to outer space, or discussing …

What is Homebrew?

The term homebrew can mean a lot of different things to different people. For instance, in the world of beer, homebrew can literally mean a home brew. That is a beer that has been brewed from home by an amateur. In the indie gaming scene, homebrew is just another slang …

What is Maritime Mobile?

If you are just now exploring the amazing world of amateur radio and marveling at all the different types of signal that you can intercept, then you might find yourself hungry for yet more exciting opportunities. One such fascinating option is maritime mobile. Maritime Mobile – An Introduction Maritime mobile …

What is Packet Radio?

Packet radio is an early amateur radio technology that dates back to the early 1980s – a time when a lot of technology was really just finding its feet. Just as many people enjoy listening out for messages via digital police scanners or communicating via two-way radio to create their …

What is Antenna Theory?

In today’s digital world, we are completely surrounded by amazing technologies that help to make our lives easier. The strange thing is that many of us have very little idea of how a lot of this technology works – we just kind of accept it! For instance: do you really …

What is Portable Radio Operations?

Decades ago, we discovered that by manipulating ripples through the ionosphere – the electromagnetic field that blankets the entire planet – we were able to send messages back and forth across the planet. Since then, hobbyists (HAM radio), professionals, researchers, and more have found endless fascinating and exciting ways to …

What is QRP Operation?

In amateur radio (HAM radio), it can seem as though there is an almost endless number of different terms and jargon, each referring to the many different ways that the hobby can be enjoyed. So what is QRP? Essentially, this is a short hand for reducing powder. The Q is …

What is Skywarn?

Skywarn – sometimes written in all-caps – is a program run by the US National Weather Service with the intention of collecting reports of localized severe weather, which can then be used to help improve forecasting and the issuing of weather watches and warnings. Skywarn is run by a network …

What is Talkback on Scan?

Talk-back channels are an exciting and unique discovery when you’re looking at frequencies with a police scanner. Read on to find out more about what these are and why they’re so interesting! When listening to a police scanner, it is always highly exciting wondering what conversation you’re going to stumble …

What to Expect at Hamfest?

Hamfest might sound like an event for meat lovers, but for amateur radio operators, it is of course something far different. Hamfest of course refers to HAM radio. This is amateur radio operation, which can be used in order to broadcast messages to others, or to listen out for signals …

How Push-To-Talk Radios Work

A push-to-talk radio is any two way radio that requires the user to push down on a button in order to transmit on their frequency. Push-to-talk is a useful feature as it can prevent radio jams and facilitate smoother communication when using a walkie talkie. This becomes important in emergency …

History of the HAM Radio

HAM radio is a form of radio that has a rather interesting history, not to mention a fascinating modern cultural position. In one way or another, HAM radio has been around since the discovery of radio waves by Heinrich Rudolph Hertz in 1888. This is a place where people can …

Analog Versus Digital Radios

The word ‘digital’ has somehow become nearly synonymous with modernity, technology, and better performance. These days, we expect everything to be ‘digital’ from our radios, to our alarm clocks. Analog is messy and low-quality. Digital is crisp and new. Right? Wrong! In fact, all digital actually means, is binary. Digital …

Conventional vs Trunked Radios

Two way radio systems – colloquially referred to as ‘walkie-talkies’ – are useful tools for communicating with another person located within a modest radius (although long range walkie-talkies can work across fairly significant distances). These tools enable us to stay in touch regardless of available cell signal, and in a …