1930s Crystal Oscillator Transmitter #1
Gil Johnson, W1DZ, designed Crystal Controlled CW transmitter from the 1930s. →
Transmitter
1930s Frankenstein Transmitter
This is the Ca. 1930 CW Transmitter in the NEWSM collection. We refer to it as the Frankenstein transmitter. →
1930s George Grammer Designed TNT (Tuned-Not-Tuned) Transmitter #1
George Grammer designed Single Control CW transmitter based on the December 1929 article in QST magazine. →
1930s George Grammer Designed TNT (Tuned-Not-Tuned) Transmitter #2
George Grammer designed Single Control CW transmitter based on the December 1929 article in QST magazine. →
1930s George Grammer Designed TNT (Tuned-Not-Tuned) Transmitter #3
This is the third Ca. 1934 TNT CW Transmitter in the NEWSM collection. Please see the George Grammer Designed TNT (Tuned-Not-Tuned) Transmitter #1 for design details and reference material. This TNT Transmitter was made by an unknown home builder. As with TNT #1, it is built according to the plans in the December 1929 issue of … Continue reading "1930s George Grammer Designed TNT (Tuned-Not-Tuned) Transmitter #3" →
1930s TPTG (Tuned-Plate Tuned-Grid) Transmitter #1
Tuned-Plate Tuned-Grid CW transmitter similar to the design in the December 1929 article in QST magazine. →
1930s TPTG (Tuned-Plate Tuned-Grid) Transmitter #2
This is a Ca. 1930 TPTG CW Transmitter in the NEWSM collection. →
Box of Plug In Coils
E.F. Johnson Viking Ranger Transmitter
E. F. Johnson of Waseca, Minnesota made amateur radio transmitters and receivers in fully wired and kit form. →