Monthly Archives: November 2016

Amateur radio: on the air!

I had my 10-foot magnetic loop antenna ready to go for this weekend’s ARRL SSB contest, but realizing that it would only work one band (20 meters) for that contest, at the last minute I decided to build a new loop to finally go on the air as K7HKR. I used this on-line calculator to figure out something optimized for both the 20- and 40-meter bands with the high-voltage variable capacitor I have on hand. This ended up being a 15-foot circumference loop made out of 1/4″ copper coil pipe, which is much easier to bend than the 1/2″ pipe I used for the 10-foot loop. Continue reading


Amateur radio: HF antenna project

Finally some more ham radio content. After getting my license in May, I passed my General exam in June, achieving my goal of better than a 90% score. I even applied for a vanity call in June and received it after the nominal 3-week wait (K7HKR; “K7 Hiker”). My goal starting out was to use home-brew antennas (except for my handheld). But, I got distracted by the summer FM broadcast band sporadic-E season, and hiking trips, and the fall equinox trans-Pacific AM broadcast band DXing season, and work, etc. Thus, I haven’t been taking advantage of having a large fraction of amateur radio frequencies available to me. Continue reading