Tag Archives: 40-meter band

Amateur radio: I’m a 2nd Placer!

The 7th Call Area QSO Party (“7QP”) took place on Saturday, May 6th.  The 7th call area contains Arizona, Idaho, Montana, Nevada, Oregon, Utah, Washington, and Wyoming.  Most of these states have sparse populations, so a combined event was begun in 2006 and has become one of the more popular annual QSO parties.  Although the FCC long ago dropped the requirement that your call had to match your call area, most operators do have a call that matches, so the name still fits (in my log it was about 80%).  Also, the Delaware, New England, and Indiana QSO Parties were on the air the same weekend, so there were a lot of cross-contact between the various contests. Continue reading

Amateur radio: ARRL DX contest

This post is rather belated, but I thought I would finally write about the ARRL International DX Phone Contest, the weekend of March 4th.  Basically, as a U.S. mainland station the goal was to contact as many people outside the U.S. mainland in as many countries as possible, and for non-mainland the goal was to contact as many people as possible in the lower 48 states. Continue reading

Amateur radio: North American QSO Party, SSB

I’ve been spending a lot of time coming up with a good way of motorizing the tuning shaft of the vacuum variable capacitor, and make the whole assembly modular so I can move it from one loop antenna to another to optimize a particular band.  I only ended up using one antenna during the 12-hour NA QSO Party on Saturday, but it generally went pretty well. Continue reading

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