An introductory video by W2AEW describing how complex impedance and admittance are represented on the Smith Chart, and how to convert between them. Includes a demonstration using a [VNA](https://en.wikipedia.org/wiki/Network_analyzer_(electrical) to illustrate the complex impedance representation on a live smith chart with variable resistive and reactive components.)
Building a new antenna is a great way to start the new year. The folding J-pole antenna project by RRRA member KA0ZLG , and featured in the March 2005 issue of QST magazine, is a new twist on an old design. It is an excellent cold weather project for improving your Go-Kit or enhancing portable operations.
Preorder the µBITX QRP HF Transceiver kit (“micro BITX”) for $109 with free India Post shipping; $119 with DHL (1 week) shipping.
Shipping will start after December 25, 2017.
Get active on the new FT8 digital mode with help from Barry Feierman’s, K3EUI, article “Join the FT8 Revolution” in the January 2018 “DIY” issue of QST. The digital edition goes live on Friday, December 8! #qst #arrl #hamradio #diy pic.twitter.com/zDZI1VtbTE
— ARRL (@arrl) December 4, 2017
One easy way to determine the best orientation for your antenna is to use an azimuth map; a world map which has been set so that all the directions on that map are real antenna directions from one central point.
These maps allow you to see the compass bearing from your QTH to other DXCC entities.
Free azimuth maps may be generated using these on-line services:
