Ham Radio On The Great Continental Divide

Soon I will make way for the town of Roosville, BC at the border of Montana and Canada. Myself and Godzilla will make our way along the Great Continental Divide Trail over the course of two weeks until we reach Antelope Wells, NM.

As I make my way down the trail I’ll have a few key survival items in my possession. First, I’ll have a med kit. Second, I’ll have a Spot device. Third, I’ll have a handheld ham radio. Continue reading Ham Radio On The Great Continental Divide

BAYCON 2016 in the bag

The future of ham radio is bright, but we have our work cut out for us.

There’s a growing conversation happening on the Internet around many aspects of the amateur ham radio hobby. As licensed operators in the hobby, we should be asking ourselves, “What can I do to help preserve the hobby as it exists today, and leave it in a better place for tomorrow?”

Continue reading BAYCON 2016 in the bag

Sense motion by using doppler effect

Daniel Rapp has written a blog post about using the doppler effect to sense motion. In his experiments he’s used hand gestures in free space to generate the scroll, tap, and double-tap gestures on his laptop. He’s produced a library which allows a computer to transmit a tone from its speaker while at the same time receiving through its microphone. As the hand moves in specific directions near the microphone it creates subtle nuances in the sound being received. These nuances are then translated into specific commands. Continue reading Sense motion by using doppler effect

Helical Loaded Magnetic Loop Antenna

In July of 2014 I was invited by Mike, KI6OID, of the Red Cross here in the Bay Area, to help with a unique HF (low frequency) antenna build. He and I have a mutual friend, Suresh (W6KTM), who started a non-profit organization in 2007 to create what’s called Radio Mala. Their goal is to implement technological leaps in communication in India to help protect and provide relief to its population in the event of natural disasters, which the area is very prone to on what seems to be a regular basis.

Continue reading Helical Loaded Magnetic Loop Antenna