Difference between revisions of "4A"
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It is a crystal-controlled CW-only transmitter capable of 20 watts RF output. | 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 crystal and associated band-changing coils were plugged from the top of the unit. | ||
| − | [[File:4A front m.jpg | + | [[File:4A front m.jpg|center|This unit is now in the UTC museum.]] |
| − | [[File:4A upper-left m.jpg | + | [[File:4A upper-left m.jpg|center|Internal View]] |
The 4A was a kit, you were responsible to purchase the tubes separately. | The 4A was a kit, you were responsible to purchase the tubes separately. | ||
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. | ||
Revision as of 23:16, 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, you were responsible to purchase the tubes separately. Like many home-assembled projects - this unit had no cover, top, sides or back.
