1. QSO - Noun
2. QSO - Verb
Initialism of quasi-stellar object. (a quasar)
(dated) A radio-quiet quasar.
QSO (third-person singular simple present QSOs, present participle QSOing, simple past and past participle QSOed)
(transitive, intransitive, radio slang) To communicate (with) by means of amateur radio.
A few weeks later, G3CQE had the first G/VE RTTY QSO with VE7KX. Source: Internet
In early 1949, the first American transcontinental two-way RTTY QSO was accomplished on 11 meters using AFSK between Tom McMullen (W1QVF) operating at W1AW and Johnny Agalsoff, W6PSW. Source: Internet
It was not until 1979 that this effect was confirmed by observation of the so-called " Twin QSO " SBS 0957+561. Source: Internet
The first two-way amateur radioteletype QSO of record took place in May 1946 between Dave Winters, W2AUF, Brooklyn,NY and W2BFD, John Evans Williams, Woodside Long Island, NY. Source: Internet