Jul 7, 2023
07:00 PM Pacific Time (In the Room, and by Zoom)
Program:
Antenna Potpouri
Steve Stearns, K6OIK
Cats feature in some famous explanations of radio. Examples are given. Antenna Q has multiple definitions. A fundamental definition of Q is given. One kind of formula for Q is shown to be wrong. Chu's famous 1948 result on antenna Q is revisited and shown to be correct but incomplete. A correction is given that generalizes Chu. Finally a comparison of HF dipoles versus verticals versus horizontal and vertical loops over ground shows which is better and why. No, it's not just a matter of pattern shape or noise polarization.
Speaker bio: Steve Stearns, K6OIK, started in ham radio while in high school at the height of the Heathkit era. He holds FCC Amateur Extra and a commercial General Radio Operator license with Radar endorsement. He previously held Novice, Technician, and 1st Class Radiotelephone licenses. He studied electrical engineering at California State University Fullerton, the University of Southern California, and Stanford, specializing in electromagnetics, communication engineering and signal processing. Steve worked at Northrop Grumman Corporation's Electromagnetic Systems Laboratory in San Jose, California. He retired as Northrop Grumman Technical Fellow. Steve is serving as vice-president of the Foothills Amateur Radio Society, and served previously as assistant director of ARRL Pacific Division. He has over 100 professional publications and presentations and ten patents. Steve's Amateur Radio presentations are archived at https://www.fars.k6ya.org/docs/k6oik, and his professional papers are at IEEE Xplore. Steve has received numerous awards for professional and community volunteer activities.
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Meeting ID: 834 6039 2348
Past Meetings Click on The Year/Month Below For A Past Meeting
The Palo Alto Amateur Radio Association meets on the 1st Friday of the month at 7:00 pm (19:00 J) (except when the first Friday lands on a holiday and typically moved to the 2nd Friday of the month).
PLEASE NOTE: The meeting location has changed. We will now be meeting in Meeting Room H6, in the Cubberley Community Center in Palo Alto. Further information is below.
Location: Cubberley Community Center; 4000 Middflefield Road, Palo Alto, CA 94303.
Telephone: (650) 329-2418.
After the meeting, many members gather for beer, pizza, and eyeball QSOs at Pizza Chicago, located at 4115 El Camino Real, in Palo Alto..
Location: https://www.pizzachicagopaloalto.com/
Board Meetings
The PAARA Board meets on the 3rd Wednesday of every month at 7:00 pm at the home of Marty Wayne, W6NEV. Address is: 1039 Bryant Way, Sunnyvale, CA. We conduct most of our club business there in order to allow more time for guest speakers and socializing at regular club meetings. Any PAARA member is welcome to attend.
A few meetings throughout the year have pre-defined agenda items. These include:
September Board Meeting The Nominating Committee is appointed by the President to decide on a slate of candidates to be recommended to the membership.
October General Meeting The Nominating Committee presents its nominations to the membership at the regular club meeting. Nominations from club members opens at the beginning of the meeting, and closes at the end of the meeting.
