The top documents tagged [measure of solar activity]

General Licensing Class Subelement G3, Questions Only Radio Wave Propagation 3 Exam Questions, 3 Groups.

General Licensing Class G3A – G3C Radio Wave Propagation Your organization and dates here.

G3 - RADIO WAVE PROPAGATION [3 Exam Questions -- 3 Groups]

General Licensing Class “G3” Presented by the Acadiana Amateur Radio Assoc. Lafayette, Louisiana.

G3A01 What is the sunspot number?

General Licensing Class