SP9SMT · AMATEUR RADIO · JO90LI

Radio, electronics and projects that actually work around the station.

SP9SMT is my space for amateur radio, 11 metres, RF experiments, MeshCore and home-built electronics. I use it to document on-air experience, measurements, projects and solutions created for practical use.

SP9SMTamateur radio 161WGC34811 m JO90LIlocator QRZqrz.com/db/SP9SMT ↗

My radio journey Explore projects

From 11 m and 161WGC348 to today’s SP9SMT station — this site is meant to document a passion, not just list equipment.

OFFLINEstation telemetry inactive

SP9SMTJO90LI

144.300 MHz

reference frequency · VFO A144.300MHz

Band2 m144–146 MHz

ModeFMdefault setting

LocatorJO90LIQTH

Rotor—°telemetry planned

Live data will appear when telemetry is enabledTODO · CAT / ROTOR API

MY RADIO JOURNEY

It started on 11 metres. That part of the story is still alive.

161WGC348 is more than an old callsign to me. The 11 m band started my interest in radio and remains an active, important and sentimental part of it.

Amateur radio came next, followed by more bands, the SP9SMT station, antennas, electronics and automation. Over time the hobby grew to combine radio, software, networks and home-built hardware — which is exactly how projects such as RadioCraft emerged.

SP9SMT profile on QRZ.com ↗

11 METRES

161WGC348

Where the interest in radio began, with first contacts and a band I still return to.

AMATEUR RADIO

SP9SMT

Amateur radio, more bands, antennas, experiments and the continuing development of my station.

OFF-GRID / MESH

MeshCore

Mesh and off-grid communication: radio nodes, field testing and links independent of conventional infrastructure.

BUILD / AUTOMATE

RadioCraft

Electronics and automation built around real station needs — from prototype to working solution.

On the bands

Operating, listening, antennas, measurements and practical RF experiments.

Electronics

Home-built circuits, controllers, PCBs and solutions designed for specific needs.

NET

Mesh / off-grid

MeshCore, radio nodes and communication that can operate beyond conventional infrastructure.

LAB

Workshop

Prototypes, firmware, station automation and the step-by-step development of RadioCraft.

MESH / OFF-GRID

MeshCore is part of the station too.

I am interested in communication independent of conventional infrastructure: radio mesh networks, field experiments, nodes and practical applications. This is another area that will grow here over time.

LAB / PROJECTS

Things being built around the station

Not a product catalogue, but a living workshop: projects, prototypes, measurements and successive iterations. Some are built only for my own station, while others may also be useful to fellow radio amateurs.

prototype01

RadioCraft Master

The central controller of my station automation platform — communication, telemetry and coordination of distributed modules.

RadioCraftESP32RS485automation

v0.1↗

FIELD NOTES

Radio journal

Notes from the bands, the bench, measurements, tests and whatever is currently happening around the station — shorter material that does not need full project documentation.

2026-09-30

A new SP9SMT.pl is taking shape

The new site is meant to show not only projects, but also the station, the passion behind it and the journey from 11 metres to home-built radio systems.

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