Experiments – KM6ZPO

My First Simplex Contact – In the Middle of the Mojave Desert

April 1, 2019 Mark Warrick

Yesterday I went on a little adventure out in the California desert. I was equipped with a Baofeng UV-5R and a cell phone loaded with APRS.fi software. Our first destination was the Hole-in-the -Wall Rings Trail. Shortly after exiting the 40 highway, I lost cell service,

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First SSTV Image Capture

April 13, 2019 Mark Warrick

I finally did it! I captured this image from the International Space Station using a Yaesu FT-60 radio with a Diamond SRH77CA whip antenna. I used SSTV for iOS to decode and save the captured audio.

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APRS: It Works, But It’s Not Reliable

April 15, 2019 Mark Warrick

When I first heard about APRS, I had hoped I could use it to replace tracking I already get from my SPOT device. I began my learning curve by testing several APRS apps.

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APRS-IS vs. GPS

April 29, 2019 Mark Warrick

Yesterday I put APRS-IS to the test in the mountains on the San Juan Trail, located a few miles way from Ortega Highway 74. In this area there are no digipeaters close enough for RF transmissions, so I tested the SPRINT cellular network to see if I could be tracked in real time (KM6ZPO).

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Mobilinkd TNC3 and BaoFeng BF-F8HP APRS Field Test

June 21, 2019 Mark Warrick

After several months of trying to figure out how to use a Baofeng as a TNC for things like APRS tracking, I finally found a method that works.

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AREDN Mesh Field Kit

January 11, 2020 Mark Warrick

Recently I’ve been thinking about setting up a field kit for the Areden Mesh Network. I’ve seen plenty of people able to setup their nodes at their homes, so I know it’s possible. Setting something up for very portable field use was my challenge.

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