Power usage tracking for batteries with Coulometers

Running around with ham radios and 12v DC devices, knowing how much power is left in the tank can be pretty important. For simple lead acid batteries, the voltage of the battery can give you a pretty good idea how much capacity is left. But nowadays a lot of people have moved to the LiPo4Continue reading “Power usage tracking for batteries with Coulometers”

ACRC Club Contesting

The Anoka County Radio Club has started doing more contesting activities at the beginning of the year. We have now done 8 contests, including Field Day, with score dashboards available for people operating under their own callsigns. There are two things we’ve implemented to help us along. First, we’ve become an ARRL affiliated club forContinue reading “ACRC Club Contesting”

The Dawg House – Video/Comms Trailer

As reported earlier, we got carried away and bought a lot of 30′ 6 KW diesel retired construction light towers and converted these for communications purposes. We signed an MOU with Minnesota VOAD and MNARES and were reminded that not all disasters happen on warm, sunny summer afternoons. We in fact got an email heads-upContinue reading “The Dawg House – Video/Comms Trailer”

Receiving SSTV images from ISS

Several times per year, the International Space Station transmits pictures using SSTV (Slow Scan Television) on 145.800 MHZ. It can be fun to receive them, and (if desired) upload your pictures to the online portal, for a nice confirmation certificate. https://www.spaceflightsoftware.com/ARISS_SSTV/ Receiving these pictures is its own art. Many online guides already exist for howContinue reading “Receiving SSTV images from ISS”

September 2021 VHF contest

Never missing an excuse to get on the air, the ARRL VHF contest was this past weekend. Many of us, myself included, have permanent VHF / UHF antennas (plural) on the roof. Don’t ask how many, we’ve surely lost count… But they’re extremely non-ideal when the polarization doesn’t match the traffic you’re trying to work…Continue reading “September 2021 VHF contest”