TECHNICAL Category

Content related to the activities of the RRRA Technical Committee and the equipment/systems they maintain, along with technical topics of general interest.
Technical

Portable Mesh Node With VOIP and Wifi

Purchasing an AREDN compatible radio and antenna is only the first step in assembling a useful, deployable, personal node.

Additional parts and equipment to support planned network capabilities—including provisions for portable power—must be purchased and then packaged in a manner which allows for safe and reliable operation.

Trevor Paskett (K7FPV), a member of the AREDN project, has designed a a portable mesh node to support his local mesh network’s mission while meeting served agency policy restrictions which prohibit permanent installation of equipment in their buildings.

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Education • Technical

Smith Chart Basics - Impedence and Admittance curves and conversions

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.)

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Technical

Start the New Year with a new antenna

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.

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