What Is Tech Night?
Tech Night is BARC's informal workshop and build event — a chance to get your hands on equipment, work on projects, get help from experienced members, and learn something new in a relaxed setting. No agenda, no pressure, just radio.
Whether you're a newly licensed ham programming your first handheld, a seasoned operator experimenting with digital modes, or someone curious about getting started, you'll find plenty to talk about — from antennas and station setup to software, equipment repair, and whatever members bring to the table. Bring a project you're working on, a piece of gear that needs troubleshooting, or just come to watch and learn.
All skill levels are welcome! Suggestions for future topics and demonstrations are always welcome too.
Join us for part two of our hands-on breadboarding series. Bring your breadboard and build along as we work through the basics of circuit building.
Topics
- Series vs. Parallel
- Capacitors
- Transistors
- Voltage Dividers
What to Bring
A REXQualis Electronics Components Fun Kit (about $15, available on Amazon).
Past Tech Nights
ADS-B Tech Night
John Westerkamp, W8LRJ, presented a tutorial on building an ADS-B receiver, including how to build your own ADS-B antenna.
View Presentation →Allstar Link Tech Night
John Westerkamp, W8LRJ, presented a short overview of Allstar Link and EchoLink on the BARC repeater, followed by a demonstration of his home Allstar node.
View Presentation →EFHW Antenna
An EFHW (End-Fed Half-Wave) antenna is made of a wire that's half the wavelength of the lowest band it's designed to work on.
View Presentation →Antenna Matching Networks
A discussion of matching networks — connected between a source and a load, designed to transfer nearly all power to the load while minimizing SWR. An antenna tuner is essentially a matching network with variable capacitors and multiple inductors.
View Presentation →Some Reading Material
Planned Topics
- • Radio Orienteering (Fox and Hound) builds
- • Kit Build — led by Stu Holzer, K8ST. More information to follow so you can reserve a kit.
- • Radio Orienteering (Fox and Hound) testing and practice session, outdoors (date TBD)
- • Prototype using a microprocessor
- • 3D printing design for hams — hands-on if possible
Presentation Backlog
Tech Night tries to stay planned at least two meetings ahead, so people have enough time to purchase components if needed. Below are topics on the list — it would be great if you could present one, or assist someone else who does. All members, regardless of knowledge or experience, are always welcome and encouraged to attend.
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"Duplexers and Tuning" — TimWhy duplexers are needed for repeaters, plus an actual tuning demonstration. Around 60 minutes.
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"APRS-GPS" — TimA 101-type presentation on the basics of APRS and sending your GPS coordinates over ham radio. 40 minutes.
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"Wide-Narrow Band" — TimTakes the confusion out of "narrow" and "wide" in the 21st century. Short, 10 minutes — usually folded into one of the other presentations.
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"Usage of Microcontrollers in Ham Projects," Part 1 — BobDemonstration of Arduino IDE, MicroPython, and microcontroller simulation software, with discussion of practical applications for ham radio.
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Setting Up and Using a Raspberry Pi 4 or 5 — RayEither as a ham shack digital mode computer or for FT-8 on POTA.
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KiwiSDR Presentation — Mike Suhar, W8RKOMostly about the worldwide network the receivers are connected to, and how you can use that network for ham radio and other interests.
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Solar / Battery-Powered Micro Radio BuildsPresenter TBD.
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Raspberry Pi for POTATech Night and POTA related — presenter TBD.
BARC Build-A-Repeater (BAR) Project
The BARC Build-A-Repeater (BAR) project — where club members build an amateur radio repeater and then place it on the air — starts in September. These are in-depth classes covering all aspects of assembling a repeater, FCC and OARC requirements for proper operation, and site/antenna specifics. By the end of the project, attendees should feel confident to try this on their own.
Classes are held at the clubhouse twice per month, on the 2nd and 4th Monday, starting at 7:00 PM and lasting around 1.5 hours. Email reminders go out in advance. Each class includes a short PowerPoint presentation covering a specific section of the project, followed by a hands-on session where members participate in the actual construction.
First class: Monday, September 11, 7:00 PM at the clubhouse. (Year to be confirmed — flagged for update.)
Presentation Archive
These links use an older site URL pattern and haven't been individually re-verified — worth a spot-check.
| Presentation |
|---|
| Antenna Matching Networks |
| YSF2DMR Through a Hotspot |
| SharkRF OS3 Hotspot |
| Hotspots 101 and the MMDVM HAT |
| Introduction to Arduino |
| Introduction to JS8Call |
| Introduction to DMR |
| The Nano VNA |