News

NXDN (Almost) Everywhere: Increase coverage with Hotspots
Part Two: The Hardware
By Jason Triolo, KD4ACG

Now that you have a brief background on the concept of a digital hotspot, you may wonder what it takes to get started?

Of course, you’ll need a digital radio, which you probably already own. Ideally, the radio should operate in the digital mode that you plan to use. (In a future article, we’ll discuss this in more detail.)

The foundation for virtually all hotspots is a Raspberry Pi. Almost any model will work, from the ultra-compact Pi Zero to the more powerful Pi-3 or newer Pi-4 models. Although any model provides the same audio quality and on-air performance, those who prefer to have both wired Ethernet and Wi-Fi capability should opt for the Pi 3 or 4, as the Pi Zero only has Wi-Fi built-in. You’ll also need a microSD card for the Pi, which will hold the operating system and software for the device.     (..more..)

-November 10, 2019

NXDN (Almost) Everywhere: Increase coverage with Hotspots
Part One: Introduction and Brief History
By Jason Triolo, KD4ACG

Several years ago, as digital modes were becoming more popular on Amateur Radio airwaves, we started to see a small number of Internet-connected devices arrive on the market. These devices were typically a USB stick, designed to connect to a Windows PC. They enabled a user to access a D-Star network, even if a D-Star repeater was not available in his/her area.

Over the years, much has changed. When these “dongles” first arrived on the scene, D-Star was still the predominant digital mode in Amateur Radio. Now, these devices have evolved to support virtually every digital mode that’s present in our hobby. These include not only amateur-only modes like D-Star and Fusion, but also modes adapted from the commercial realm, such as DMR, P25, and most recently, NXDN.

While their capability has improved, so has their portability.   (..more..)

-November 4, 2019

CONTRAST AND COMPARE
By Paul Toth-NB9X

Comparing radios with one another is what a “Shootout” is all about.  It is a time tested method for evaluating the various offerings in the marketplace where apples are apples (so to speak), not oranges, apricots or grapefruit.

The advent and miniaturization of silicon components have allowed several manufacturers to cram so many features into very small physical packages.  Sometimes we lose sight of what is really important – voice and speech quality.  The ultimate test for any two-way radio should be how well it actually sounds.  All the fancy features don’t mean a hoot if the radio sounds like something that was just dragged through a swamp.

The ability of the radio to reproduce clear, intelligible audio is a by-product of the technology inside the chassis.  But that is not the only factor.  (..more..)

-October 29, 2019

PRIVACY
By Paul Toth-NB9X

The invention of high-resolution cameras, high capacity storage devices and networked transports that can carry large amounts of data from one place to another has enabled a whole new discussion about PRIVACY. This discussion, in many ways, has manifested itself in the framework of “Do the Good Guys have an inherent right to be safe and secure in their person and their property” versus “Do people who do not respect laws and any semblance of moral character have an overriding right to infringe on the safety and security of others in the guise of privacy”.

Questions about privacy are not new. Think back to the days when the telephone in your parent’s house was connected to a “Party Line”. When y folks moved to a rural area in Wisconsin in the mid-1950s, the only telephone service that was available was on a “party line” they shared with twenty-five other neighbors. An expectation of privacy – only in your dreams. The ole “party line” was Gossip Central!

Ham Radio communications have always been “open” and in the clear.  (..more..)

-October 13, 2019

THE UNDISCOVERED COUNTRY
By Paul Toth-NB9X

If you are a Star Trek fan, like I and many other Hams I know are, you will recall one of the last movies the original Star Trek cast was center stage in, The Undiscovered Country. It was all about our inherent fear of the unknown and the reluctance of many beings, Humans, Klingons and many more to venture into territory and relationships we just don’t feel comfortable with.

Amateur Radio has traditionally been all about exploring the “Undiscovered Country” of RF right from its inception. Without those early explorers like Marconi, Bell (yes, Alexander Graham Bell was not solely into wired inventions), Sarnoff and hundreds more, we would not have most of the communications technologies we enjoy today. Amateur Radio has always been a place for discovery, innovation, creating and building the better mousetrap, so to speak. It has also been a place that has been open for a broad range of different interests and applications.

I would like to think that is still the case because, as I see it, there is still a lot of “Undiscovered Country” to be traveled and a lot of innovation to be embraced. That is why I find the ruckus that RM-11831 has created disturbing and potentially existential. (..more..)

-September 20, 2019

THE CIRCLE OF LIFE
By Paul Toth-NB9X

Someone asked me the other day if I knew what the median age of the Amateur Radio operators in the U.S. was. I guess he must have thought my name was “Google”, or “Bing” or one of those Internet search engines.

If you take a look around at most Ham Radio clubs or at a Hamfest or two, you rapidly come to the conclusion the median age is probably something North of sixty-five. And if you believe the Internet, the median age of licensed U.S. Amateur Radio operators is eighty (80) years. Well, that makes me feel like a youngster (I think).

That begets asking the question, “Where is the next generation of Ham operators, RF Explorers to carry on our mission?” Maybe the question that could/should be asked is “Where are the next generation and their parents?”. I pose the question in that way because even though I had always had an interest in Ham Radio as a youth, my earlier years were spent in commercial broadcasting. It wasn’t until I was forty-five years old before I got my license. (..more..)

-September 6, 2019

THE INSIDE STORY
By Paul Toth-NB9X

Recently, on one of our Wednesday night TampaBay Area NXDN Nets, we talked about using your portable and mobile Ham Radios indoors.  By the way, if you don’t have a NXDN digital radio, you need to get one and join us every Wednesday evening at 8:00 PM on the growing six-repeater TampaBay Area NXDN Network, Talkgroup 1200.

Back to the topic at hand, INDOOR COMMUNICATIONS.  Using a radio inside your well-built, hurricane standard home or business can be a challenge.  Reliable VHF communications are particularly challenging because of the band’s longer wavelength.  But even on UHF, the four or five watts your radio transmits with can push the radio and repeater you are using to their respective limits.  The materials your home is constructed with act as a giant RF attenuator. (..more..)

-August 15, 2019

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