Category Archives: Featured

Getting Started with MeshCore

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At our March 20th meeting, we introduced a new mode called MeshCore. MeshCore is an off-the-grid text messaging system and works with the iPhone or Android device you already own. It is an evolution of the popular MeshTastic system and improves many of MeshTastics shortcomings. We played a good introductory video at the meeting and if you missed it, or want to see it again, it is available here: https://www.youtube.com/watch?v=t1qne8uJBAc To get started you need a MeshCore ‘Companion’ device.  MeshCore devices operate in the unlicensed LoRa ISM bands, specifically on 927.875 MHz in Southern California. Devices are very simple and consist of a small circuit board, power source and antenna. You can purchase pre-made devices or build one yourself. Circuit boards are all inclusive and ready to plug in and work right out of the box. No soldering is necessary and the only assembly necessary is to attach the antenna and power source. Power sources connect with a USB ‘C’ cable and you can use a normal smartphone charger. Batteries plug into the circuit board with a JST connector. Most boards handle battery charging and even solar recharging automatically. Left, is the board demonstrated at the meeting. It is a Heltec V4 LoRa board available on Amazon for $30. It included a small coil antenna, battery pigtails and is ready to ‘flash’. Flashing is the procedure used to install the device firmware onto the board. It is easy and just requires a USB C cable to connect to your computer. You just visit the MeshCore Flasher website, find your device on the list, and select ‘Companion Bluetooth‘ then ‘Flash’. Everything is handled for you. The rest of the setup is handled through the SmartPhone app using BlueTooth. Before you proceed… you will need to install the MeshCore App on your iPhone or Android SmartPhone, or alternatively, run the MeshCore Web Client on your PC, Mac, or Linux computer using the Chrome Browser. Links for these can be found below. While you can use this on a computer if necessary, we recommend you install one of the SmartPhone versions. You will first need to pair your device with your phone. This is done just like anything else you may have paired in the past. Before you power up your board for the first time, have a pencil and paper ready. Then power up your board. You will see a number displayed…. Continue reading →

SBARC Members Activate Santa Barbara Island

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On May 19, 2025, Ken, KA6KEN and I joined The Explorers Club expedition to Santa Barbara Island. It’s the smallest and most remote in Channel Islands National Park. There’s no dock, no cell service, and landings are only possible by skiff when weather and sea conditions cooperate. We brought along a VHF handheld and a directional antenna and made simplex contact with KK6SXA and KN6ZZI from the island’s summit, Signal Peak. It was a quick turnaround. We had less than 90 minutes on shore. But we made it work. I documented the trip and put together a short film that tells the story, with some help from fellow explorers we met along the way. 📺 Watch the video below: —Levi, K6LCM

Santa Ynez Peak Repeater Antenna

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The antenna for the K6TZ Santa Ynez Peak repeater on 145.18 was replaced today. As a result, its coverage is now vastly improved! If you haven’t yet, please take a moment to test your signal into this repeater and the new 446.400 repeater on La Cumbre Peak West. Both are standard negative offset, same PL 131.8. Together, these two repeaters have increased our systemwide coverage tremendously.

Repeater Updates: 446.400 Moved to La Cumbre Peak West

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It was a foggy, cool day at La Cumbre Peak when SBARC members Levi, K6LCM; Wayne, AF6GX; and Michael, K6RQV, headed up to the site to install the club’s new BridgeCom FM repeater on 446.400 MHz. Despite the low visibility and brisk weather, the team successfully completed the installation, bringing a significant upgrade to the repeater system. The new repeater offers excellent coverage and is now linked to the club’s wider system, ensuring even greater range for members and improving communications across the region. This installation is part of SBARC’s ongoing efforts to enhance the reliability and reach of its network for amateur radio operators in Santa Barbara and beyond. Stay tuned for more updates and make sure to give the new repeater a try on 446.400- PL 131.8.