A Growing Concern
I've been gardening in Oregon for a few years now, and I'm coming to appreciate evermore the humble fava bean. The first time I encountered it was in a cover crop seed mix that I got at the local garden store. I started using "field favas" and crimson clover as standard fare to plant in [...]
Simple pieces of wire are not the most sexy ham radio antennas, but they are probably the most ubiquitous, if for no other reason than that their cost-performance ratio is very good. When it comes to the lower bands, there is little else that is more practical for most of us than using a wire [...]
Overview Previously we looked at some of the basic principles of nervous system function and how chemicals from several pesticide classes disrupt normal function. This time we will look in detail about what we can expect for a dose-response characterization of acetylcholine pathway insecticides based upon their mode of action and properties of the nervous system. [...]
I've been slow getting things on the blog for a while now; from September... The DateTrike returned for its second trip to Black Rock City again this year. With smoke in the valley, we headed for the dust. It was a fun time, as is usually the case for the world's biggest art party. We [...]
After a few months of pondering how to build a simple pull-up vertical collinear antenna, I think I've finally got it! The motivation for such a design is the fact that I have tall trees for a support and can actually pull such an antenna up into the trees to 100 ft. or even higher. [...]
The last time the moon cast its shadow on my part of the planet was in 1979 on a dreary day in Seattle. I noticed that the rain was darker that morning, but otherwise the occasion was uneventful. This time around Ellen managed an invitation to watch the ecplise and make music with some friends [...]
Here are the slides from a presentation I gave to the Valley Radio Club on August 4, 2017. Variations on a Dipole - Power Point Variations on a Dipole - PDF Antenna patterns are all about interference
