Tubes - Transmitting, Audio, Misc.
Please choose from the following TUBES Sub-Catagory choices:
813 Transmitting Tube, (NOS) RCA / GE / ETC (US Brand) No longer available for Export, (NOS)
The 813 beam power tube was very popular with amateur radio operators following WW II. The tube remained a staple of amateur radio until single sideband became a popular operating mode in the late 1950's and early 1960's. Featuring a graphite plate with an ICAS dissipation rating of 125 watts the tube was very economical and a pair could provide legal limit operation (1 kilowatt input) on CW or AM. Later tubes manufactured by RCA and Amperex featured an improved plate made of zirconium-coated nickel.Made in the USA