日本の無線ガイド

免許

Ham Radio License USA vs Japan: Complete Comparison

Compare amateur radio licensing in the United States and Japan — exam tiers, band privileges, Morse code, language requi...

購入ガイド

Icom IC-7300 vs IC-7610: Which HF Rig Should You Buy?

Head-to-head comparison of the Icom IC-7300 and IC-7610 — dual receivers, RMDR, price, contest features, and whether the...

免許

Japan Ham Radio Exam Explained (English)

Official Japan ham exam sample questions in English — 4th-class basics, 3rd-class Morse rules, 2nd-class calculation wal...

免許

Japanese Ham Radio: A Guide for English Speakers

Everything English speakers need to know about amateur radio in Japan — JARL, license classes, call signs, bands, clubs,...

LoRa・オフグリッド

No-License Radio Options for Preppers and Hikers

License-free communication choices for hikers and preparedness — GMRS, FRS, Meshtastic LoRa mesh, and when ham radio sti...

LoRa・オフグリッド

Off-Grid Communication Stack: LoRa, Ham, and Satellite

Build a layered off-grid communications stack combining LoRa mesh, amateur radio, and satellite messengers for resilient...