One of National's famous airline communications equipments -- the 1932
SW-58. 9 to 850 meters.
1933 -- The AGS 1.5-20Mc. superhetetrodyne (right side of rack).
One of the most popular ham receivers in history -- the 1933 FB-7 seven
An internal view of the first hamband receiver with a built-in crystal
filter -- the National FB-X.
Table of Contents