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Details of circuits for RX/TX antenna switching and phasing of two RX antennas 1.29 MB 54 downloads...
What are Shed Workshops?
Since mid-2019 Wellington Branch 50 NZART has held regular Shed Workshops. These have proved popular, providing an opportunity for amateur operators to learn about techniques and topics in a more practical setting in somebody’s shed/garage on a Sunday afternoon. They also represent a chance to share technical experience and ideas and to get started on a new project.
Each workshop has a nominated lead and is held in the garage of a local amateur radio operator. The workshops usually focus on a specific topic or technical activity, although this does not preclude anyone introducing unscheduled topics at a workshop.
Workshops may spin off projects, such as the construction of homebrew Magnetic Loop Antennas. Where a series of workshops are focussed on construction of something of interest to attendees (or a group of attendees), donations may be requested to cover consumables/projects. Sometimes these are paid for out of club funds.
Workshops are scheduled for a Sunday between 1pm and 3pm, normally on the first full weekend of a month. Each workshop session has a nominated lead/convenor who sets the agenda and timetable as appropriate.
February 10 – Multimeters: Old and modern show and tell. Checking accuracy and meter calibration (Bernard ZL2BD)
March 9 – Test equipment: Six operators showed off a piece of test equipment in use (March)
April 13 – Vintage Radio restoration/ construction 1 (George ZL2AG)
May 5 – Vintage Radio restoration 2 (Don ZL2BL)
May 26 – Class D Amplifiers (Bernard ZL2BD)
August 4 – Build an active antenna #1 (Bernard ZL2BD and John ZL2XJ)
Sept 1 – Build an active antenna #2 (Bernard ZL2BD and John ZL2XJ)
October 6 – TX/RX antenna switching (needed for your active antenna)
& using a phasing circuit to reduce noise (Bernard ZL2BD)
November 3 – Interference – levels and strategies to reduce it (ZL2BD and ZL2XJ)
December 1 – Putting together a hotspot for DMR or D-STAR (ZL1AXG)
February 2 – SOTA kit (Bernard ZL2BD)
March 1 – Homebrew HF transceivers (Charlie Morris ZL2CTM)
Possible future topics
- Transceiver and Linear Amp testing: Two tone tests (SSB) and power measurements. Using RemoteDX Inc Remote Station equipment for demonstration
- Baluns, Ununs: end-fed matching of suburban antennas. Demos and measurements.
Please check the main page of the website or the activities calendar for scheduled shed workshop topics.