SMRC Monthly: UPDATED - Multi-Radio Antenna Sharing for Field Day

San Mateo (Amateur) Radio Club - SMRC
San Mateo (Amateur) Radio Club - SMRC
Public group

Beresford Recreation Center

2720 Alameda de las Pulgas · San Mateo, CA

How to find us

Meeting room is the North-East corner of the Beresford Recreation Center.

Location image of event venue


**NOTE** This month's topic has changed: we will reschedule the APRS talk for another month. Instead October's meeting will cover our antenna re-design plans for Field Day. **

• Newcomers warmly welcomed (you don't need an FCC license)!
• What to bring - yourself.
• Cost: first meeting is free. Annual membership is $25/year.


7:30pm - Introductions, calendar review, general club business, and welcome new members.

8:00pm - Our Field Day Chair, George Golda, WA6NKM, and our Field Day antenna redesign committee (Lindsay Jones, Mike Klemens, Darrin Jewell, Brian Mathews) will lead a short presentation followed by a discussion about re-designing our Field Day setup to be easier to deploy in an emergency and to hopefully support 4 radios (3-alpha plus GOTA).

Field Day is an annual nation-wide event that is both an emergency drill as well as a competition between amateur radio clubs.

Our club embarked on a multi-year project to redesign our approach to Field Day after decades of using two V-Beams and a G5RV launched high into the Beresford Park Eucalyptus trees. The legacy arrangement served the club well, but with the growth of trees, new membership interested in digital modes, and frequent RF issues we started a multi-year project to experiment with alternative designs. Last year we used a multi-band vertical into a diplexer, as well as 6 independent end-fed dipoles, along with a single V-beam as a back-up.

The October meeting will review proposals for using multiple radios into an antenna diplexer, using multiple directional antennas with aligned null regions, and how other clubs and contesting teams have tackled these issues. We will review how the PAARA club designed their antenna system.

9:00pm - End of Program, and optional socializing. Members will be available to provide information to newcomers wishing to earn their FCC amateur radio license.