Difference between revisions of "4A"
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Like many home-assembled projects - this unit had no cover, top, sides or back. | Like many home-assembled projects - this unit had no cover, top, sides or back. | ||
== As Advertised == | == As Advertised == | ||
| − | The 4A was first introduced in the April-August issue of < | + | The 4A was first introduced in the April-August issue of <i>Collins Signal</i> magazine. |
| − | [[File:4A.jpg| | + | [[File:4A.jpg|center|Its first appearance.]] |
Revision as of 23:49, 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, all parts included, however, you were responsible to purchase the tubes separately.
Construction
Like many home-assembled projects - this unit had no cover, top, sides or back.
As Advertised
The 4A was first introduced in the April-August issue of Collins Signal magazine.
