[morzh]

As I probably wrote in another thread (probably when I bought this 9/2025) the RCA140 has special meaning as this was the radio the Soviets stole to make their first superhet SVD, eventually having to acquire the license from RCA.

SVD stands for "Supergeterodin Vsevolnovoy s Dinamikom" - "All-wave Superheterodyne with a Dynamic speaker."

This is the first licensed model, SVD-1.
https://rem-tv.net/stuff/svd-1?srsltid=A...Y8AD8q3onV

SVD, the very first prototype and small batch production radio photos practically do not exist.

The difference for SVD-1 is 4 bands vs 5 bands in RCA140.

Otherwise the schematics are the same.

RCA140
https://www.nostalgiaair.org/pdfs/RCA-Vi...nc-140.pdf

SVD-1

SVD-1.pdf Size: 3.16 MB  Downloads: 178

BTW, The Soviet 6A8 and the American 6A8 (both are pentagrid converters) are not the same tube.