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Amateur radio antennas projects for 430-440 Mhz, 70 cm band aerials. Quadrifilar, Yagi, Moxon antennas for the UHF band.

Antennas/Array
A 6-element vertical array which is designed for 40 and 80 meter operation, and receive-only operation on 160 meters by W8WWV

Antennas/Vertical
A SM3HXD vertical phased array antenna system

Antennas/Array
Vertical phased antenna systems plans by G3WZT

Antennas/Array
KM5KG article presents a lumped-parameter tee-network model of the coupling between radiating elements in a phased array in order to provide a physical and intuitive understanding of phased array operation and adjustment interactions

Antennas/Vertical
Homebrew a vertical antenna for 40 and 80 meters band based on popular HF2V model by DL7JV

Antennas/Vertical
A vertical antenna for Six Meters band

DX Resources/Beacons/10 meter beacons
Beacon list for 10 meters band maintained by DL7JV

Technical Reference/Homebrew
N1HFX project to improve PL tone encoder providing a more stable frequency

While the Federal Register may be the ultimate record of the business of the USA’s Executive Branch, it can be a difficult document to navigate. The Register publishes approximately 80,000 pages of documents each year in the form of Notices, Proposed Rules, Rules and Official Documents; this is where all new and amended rules to Part 97, the Amateur Radio Service, must be published before they …

VHF/UHF weak-signal operators across North America are making the final tests on their stations in preparation for the ARRL UHF Contest, coming up the weekend of August 7-8. Most VHF+ weak-signal operation takes place on the two lowest bands of the VHF spectrum — 6 and 2 meters; however, there is a lot of activity that takes place above 144 MHz in the UHF portion of the radio spectrum and beyo…

After a higher than expected run on pins for Field Day this year, the ARRL has ordered more and expects them to arrive next month. “The pins were in stock until just before Field Day, but due to some exceptionally high interest, we were unable to fulfill a few final orders,” said ARRL Product Marketing Specialist Jackie Ferreira, KB1PWB. “We have ordered more pins, as many hams enjoy collecting…

Beginning July 28, those who have dealings with the FCC will have a new tool that the FCC claims will put them “within one click of all the information they want” from the Commission: a new “easy-to-use” Consumer Help Center.

“Our new Consumer Help Center makes it easy for consumers to learn about our work and take action,” said FCC Chief of the Consumer and Governmental Affairs Bureau Joel Guri…