Similar to 国際電気通信連合無線通信部門

OpenAI Five
OpenAI Five
OpenBitTorrent
OpenBitTorrent
OpenCores
OpenCores
OpenDaylight
OpenDaylight Project
OpenEmbedded
OpenEmbedded
OpenMoko
Openmoko
OpenMosix
OpenMosix
OpenRC
OpenRC
OpenRefine
OpenRefine
OpenServer
OpenServer
OpenSUSEプロジェクト
OpenSUSE Project
Optics Express
Optics Express
Optics Letters
Optics Letters
Orca
Orca (assistive technology)
ORCA (量子化学プログラム)
ORCA (quantum chemistry program)
ORCID
ORCID
OSDN
OSDN
Otter (ソフトウェア)

OW2 Consortium
OW2
PAOKテッサロニキ
PAOK FC
PDFtk
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PDRM FC
Polis Diraja Malaysia FC
アマチュア無線
Amateur radio
アマチュア無線の国際運用

Template:アマチュア無線
Template:Amateur radio topics
8JKビーム・アンテナ

APRS
Automatic Packet Reporting System
ARDF
Amateur radio direction finding