2 m and 70 cm band survey, one night at home
Twelve hours of RTL-SDR sweeps over 144–146 and 430–440 MHz from my home at KP10CL: repeaters, unknown carriers, ISM devices and the SDR's own spurs.
Radio, measurements and home tinkering
Radio measurements, filter tests, MeshCore and Home Assistant projects from my hobby workbench in Turku, Finland. 73 de OH1HQZ
Keywords
Surveys2 pages · Band occupancy and spectrum scansFilters1 page · VNA measurements of RF filters
MeshCoreComing later · Nodes, range and coverage tests
Home AssistantComing later · Home automation builds and integrations
ServersComing later · Self-hosting and server tooling
Latest
863–873 MHz SRD band survey: MeshCore and LoRaWAN
Two hours of RTL-SDR sweeps over 863–873 MHz from my home at KP10CL: MeshCore on 869.618 MHz, a likely LoRaWAN downlink at 869.525 MHz, uplink activity at 867–868.6 MHz, and SDR overload from strong bursts.
Sysmocom CF868 cavity filter
NanoVNA-H4 sweep 800–1000 MHz: 0.4–0.8 dB loss across 863–870 MHz, 17 MHz wide at −3 dB, more than 50 dB down at LTE 800 and GSM/LTE 900.
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