Utah Amateur Radio Club|
Photos from Homebrew Night,
October 8, 2015
Once each year a UARC meeting is devoted to letting
folks who have built “homebrew” equipment show it off
to the group.
Photos by Ron Speirs, K7RLS
(Click on any image, then click again or press “+” (depending on your browser) for a higher resolution version.)
Ron Speirs' clock, built with SSI gates many decades ago, has new life with LEDs instead of incandescent bulbs.
The inside of Ron's clock. It took many ICs to do the job in those days.
Chuck Johnson, WA7JOS, “built a clock.”
Bruce Fereday, KF7OZK, packaged batteries and an HF transceiver for his son who wants backpackable HF.
Here Bruce shows the kind of backpack that could be used.
Dave Deelstra, N7ISH, built a QRP dummy load for $10.
Morris Farmer, AD7SR, used a fancy IC to simulate the “ideal diode,” i.e. no forward voltage drop. It can be used to isolate multiple batteries being charged simultanesly.
The schematic for Morris' charger
Jack Dolcourt, WA0PFC, converted a PC power supply for 13-volt service.
Doralee Olds, AF7SD, put batteries together with charger and voltmeter in a portable package.
Michael Colton, KE7HIA, shows a board from his “pocket SDR,” a pocket-sized HF transceiver using software-defined-radio technology. He hopes to mass produce and market the device.
UARC President Clint Turner, KA7OEI, built a portable package that can power a 100-watt SSB transceiver. He combined D-cells, which have a surprisingly high amp-hour rating, with about 58 farads worth of capacitance, which can supply high peak currents.
Back to “Current News”