Tag Archives: amateur radio

Amateur radio band allocation

Low frequency 136 kHz – 135 – 137 kHz – The lowest frequency band alloted for ham radio use Medium frequency 160 meters – 1800–2000 kHz – Often taken up as a technical challenge in a manner similar to 6m. Most useful at night, though notoriously noisy. In many locations, a separate specialized receive-only antenna […]

Morse code abbreviations

These abbreviations are typically used when transmitting in Morse code in order to diminish the number of characters sent. Some of them are in use also in normal amateur radio speech. AA All after (used after question mark to request a repetition) OO Official observer AB All before (similarly) OP Operator ARRL American Radio Relay […]