Ed WA3WSJ has an interesting site to me. I don’t know how I found it initially, probably searching on antennas, but I do return it every once in a while to check out his activities. This guy is an avid hiker with his dog Trevor (pictured) and has developed some interesting antennas. I have links to a couple, not sure if these are still available on his site or not, the bead wire antenna and the tri-band dipole antenna. Check out his website, I will add a link to my list on the side.
This one seems like science fiction coming alive: the sea water antenna. What will they think of next?
From Wikipedia: “A QR Code is a matrix barcode (or two-dimensional code), readable by QR scanners, mobile phones with camera, and smartphones. The code consists of black modules arranged in a square pattern on white background. The information encoded can be text, URL or other data.
Common in Japan, where it was created by Toyota subsidiary Denso-Wave in 1994, the QR code is one of the most popular types of two-dimensional barcodes. QR is the initialism of Quick Response, as the creator intended the code to allow its contents to be decoded at high speed.”
Someone posted a link on a qrp forum I follow this morning that pointed to a video about QR Codes. I have never seen them before, but they seem quite interesting. They are readable by mobile phones, I have not been able to find an online reader. Anyone know of one? Just want to try it out.