Difference between revisions of "4A"
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[[File:4A front m.jpg|options|This unit is now in the UTC museum.]] | [[File:4A front m.jpg|options|This unit is now in the UTC museum.]] | ||
[[File:4A upper-left m.jpg|options|Internal View]] | [[File:4A upper-left m.jpg|options|Internal View]] | ||
| + | The 4A was a kit, and you were responsible to purchase the tubes separately. | ||
| + | Like many home-assembled projects, this unit had no cover - top. sides or back. | ||
Revision as of 22:58, 29 March 2020
This Amateur Radio Transmitter was introduced in the October 1933 issue of QST.
It is a crystal-controlled CW-only transmitter capable of 20 watts RF output.
The crystal and associated band-changing coils were plugged from the top of the unit.
The 4A was a kit, and you were responsible to purchase the tubes separately.
Like many home-assembled projects, this unit had no cover - top. sides or back.
