1930s Crystal Oscillator Transmitter #1
Gil Johnson, W1DZ, designed Crystal Controlled CW transmitter from the 1930s. →
Transmitters
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. →
Airplane Radio Telegraph Transmitting Set Box. Type BC-15A
Made for U. S. Army Signal Corps. →
Bendix Transmitter T-100
Built for the U. S. Coast Guard. → E.F. Johnson Viking Ranger Transmitter
E. F. Johnson of Waseca, Minnesota made amateur radio transmitters and receivers in fully wired and kit form. →
Kellogg Switchboard & Supply Field telephone model 1917
Made for the U. S. Army Signal Corps. →
Mackay Radio & Telegraph Co., 123-B
Radio Signal Corps Laboratories Radio receiver & transmitter BC-322
RCA Radio Telegraph Transmitter, Model ET 8003
Radio Telegraph Transmitter Model ET-8004
RCA Model AVT-112-A aircraft transmitter
Similar artifact at the Smithsonian Institution Air & Space Museum → →
Stromberg-Carlson portable wireless set
Made for the U. S. Army Signal Corps. In leather case, with key, sounder and space for batteries. →
Western Electric Transmitter Receiver Type CW925
Short Range Radio Telephoning Set for 32 Volt DC supply consisting of: →
US Army Signal Corps Transmitting Tuning Radio Transmitter
US Army Signal Corps Transmitting Tuning Unit
Marconi W. T. Sets field radio
In canvas case with carrying strap. With telephone-style handset. →
Marconi W. T. Sets Forward Spark Mk. II transmitter
Western Electric transmitter/receiver
Wood case, with key and headphone. →