39,728
edits
Line 112: | Line 112: | ||
modified instruments." | modified instruments." | ||
</blockquote> | </blockquote> | ||
The following paper includes a chart that mentions in Figure 10 the | The following paper includes a chart that mentions in Figure 10 the 3 GHz 519C [[introduced in 1963]]. | ||
The 519C is either very rare or extinct or was never actually made. | The 519C is either very rare or extinct or was never actually made. | ||