Designer, maker and licensed radio amateur operating under the callsign M7VXJ. This site documents my ongoing experimentation with radio telegraphy, satellite reception, electronic engineering and related projects.
I also create computer generated animation as silico.studio and design bespoke 3D printed products, which are avalable for purchase from physis.shop.
Radios
Yaseu FT-857 Yaesu FT-818 Yaseu FT-4X LilyGo T-Echo RTL-SDR
Hack-RF T1000-E
Antennas
Diamond VX30N [2m,70cm] DIY V-Dipole [137 MHz] Parabolic [1.7GHz] EFHW [7, 14 MHz]
4th Febuary 2024
Meshtastic
868mhz
Lilygo T-Echo
Meshtastic is a software platform which
allows LowRa (Low Power, Wide Area) devices to create a mesh network, communicating on 868MHz (in the UK). The information shared includes encrypted text
messages as well as GPS locations.
We tested two Lilygo T-Echo
devices, sharing telemetry and messages to a range of 2km. The
theoretical range of these devices is limited by line of sight, so it is
possible to make contacts much further.
I hope to build a custom
enclosure for a device using this platform and attach it to the dog's
harness so that we can track him on GPS if he ever gets lost.