Wednesday, March 10, 2021

The Farmacy Seeds Network Presents: Learning about APRS + more with Peter KC2ASA


Imagine being able to use your amateur radio to monitor your beehive on your property or share your location with your friends while hiking or going for a bike ride.

APRS or automatic packet reporting system can do all that, plus provide the ability to communicate by text message between radios that do not require any monthly fees.

Everything you may want to know in a very non-technical way is explored on this episode of The Farmacy Seeds Network thanks to Peter KC2ASA.

The shows host as always, CJ KD2IIN, takes us through not only how to learn more about this fairly mature technology but also some other exciting amateur radio technologies used for communicating.

If your interested in "whats next" such as satellite communications and new modes of communication, like something that HVDN has been focused on called HASviolet where another local club has recently started to experiment with. More about that  over at another Hudson Valley resident (for now) Nolan KE8JCT's fantastic blog and this recent post about using LoRa in some upcoming projects.  

Lots more about APRS on the HVDN Notebook if you want to learn more, like how to even track a hot air balloon or a high altitude balloon too! 

Tuesday, March 9, 2021

USMA Spotlight: How and why about NVIS communications

The June 12th "Hudson River Radio Relay Featuring Bannerman's Island" is getting much closer and our event website is nearing completion with all the details.  

While the event and its impressive list of local amateur radio club sponsors will be covered in different ARRL media in the months to come,  here is a glimpse of a form of communication that will be used during the event.

Fellow Hudson Valley resident, member of the Orange County Amateur Radio Club and Professor at the prestigious United States Army Cyber Institute located at West Point is COL Stephen Hamilton KG5HY.

Here is his recent presentation on using near vertical incident skywave (NVIS) for short range and reliable HF communications plus some really exciting details on cave based communications using rudimentary mesh communications technologies. 

Local Learning: DIY Filters & Cheap Spectrum Analyzers with N2KTV


One of the many great companies found in the Hudson Valley of New York is Fair-Rite Products Corp.  This Wallkill, NY based company specializes in ferrite based products and has been in existence since 1952.  You can read about the company history here

Ferrites are used in almost all electronic devices and are especially useful within the amateur radio community when it comes to building various filtering circuits or for helping to eliminate different types of RFI or radio frequency interference.  

The topic of ferrites and applications is far too vast to cover in one article, but Fair-Rite has some great technical notes and other content on its website.

Here is a latest video thanks to Bruce N2KTV who works for this important company. Bruce covers in less than 5 minutes, the theory behind low pass filters, design discussion and a perfect demonstration of  a 7 MHz low pass ferrite filter along with how to test it with a very inexpensive tiny spectrum analyzer, which has proved very popular since its introduction about two years ago. 

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