two-way radios

can be indispensable in emergencies and other times normal communications tools are not working. For my current amateur radio Technician Class students, I just bought 7 of the make/model I feel gives the best cost/benefit for ham radio operators. The TYT MD-UV390 operates on both the ultra-high-frequencies (UHF) of the FCC’s family radio service (FRS) and general mobile radio service […]

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2-way amateur radio repeaters

I created a presentation for our local ham radio club to explain the environment our repeater engineer was dealing with. The problem many great sites have is that their prominence attracts multiple transmitters with each addition making it harder for the repeater to pick up the signals we want out of the electromagnetic flood. Thus the situation I describe with […]

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wave behavior

Whether it is a stone tossed into a glassy-smooth pond, sound waves coming out of a trombone or electro-magnetic waves enabling radios to communicate, the wave behaviors are direct relatives to the physicist. One such person built a model to demonstrate wave behavior then his employer, Bell Labs, produced a movie of it. I almost called it a video, but […]

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comms plans for Darby Dog Derby

The 2020 Bitterroot dogsled race weekend is coming up. I have the two-way-radio support plan mapped out, radios programmed, testing complete, batteries all charged up … I think we are as ready as we can get. For more details about the weekend, the participants and the races, go to The Bitterroot Mushers website. Each year we learn more, adding refinements […]

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final day of registration for ham class is Friday

This a repeat of my previous announcement. There is one more day of online registration for Darby Adult Ed classes. We stand ONE STUDENT SHORT of having enough to make it happen. I am bringing another amateur radio operator licensing class to Darby, Montana via the Darby Adult Education program in its Spring 2020 schedule. I have not keept track, […]

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2-meter directional antenna for ten bucks

Two way radios, and particularly the little 5-watt Handheld Transceivers (also known as HTs or walkie-talkies) put their little bit of power in every direction. Yet we sometimes know exactly what direction we want to transmit and would prefer all the power go that way. A century ago two Japanese scholars created an antenna design to do exactly that. We […]

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upcoming amateur radio class

My favorite radio instructor is presenting a class leading to the second, middle level FCC amateur radio operations license. Eric brings comprehensive knowledge, empathy, and energy to the classroom. A fine set of qualifications for anyone who wants to learn the subject. If you have your Technician license, Eric will lead you to successfully cresting the next hurdle into the […]

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Jungle Antenna Building Workshop

July 6, 2019 – Darby, Montana Six of us came to my Bunkhouse Road workshop from SE Darby hills, Hamilton and Alberton canyons – Technicians, Generals, Amateur Extras Some white-board work explaining the math in metric and inches Our calculations were primarily done in metric (Ted’s slide rule prefers it) 300,000,000 meters per second / 147,000,000 Hz = 2.04 meters […]

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antennas and cables

I do not recommend you begin connecting your radio to a remote antenna by building your own antenna OR cable. It is not as simple as it looks. Your first remote antenna and cable should be purchased from a reputable engineering firm. Here are three choices:Ham Radio OutletDX Engineering cablesDX Engineering vhf uhf antennas Doing it like that will get […]

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