Solar activity was very low to low. Only low-level C-class activity
was observed from Regions 4384 and 4389. Slight growth was observed
in Regions 4384 and 4391. New Region 4392 was numbered. The rest of
the spot groups were either stable or in decay. No Earth-directed
CMEs were observed. Solar activity is expected to be at low levels,
with a slight chance for M-class (R1-R2/minor-moderate) flares,
t...

Radio Teletype (RTTY) became a popular digital mode in amateur radio through a mix of postwar circumstances, technical curiosity, and a group of operators who looked at a 180-pound machine […]

The post Ham Radio History: How RTTY Became the First Mainstream Digital Data Mode appeared first on OnAllBands.