The Echophone is portable, compact but lots of volume. Or buy a desktop version. Published in the March, 1925 issue of RADIO NEWS.
Source: Magazine collector Steve Davis
Restoration by: magscanner
The Echophone is portable, compact but lots of volume. Or buy a desktop version. Published in the March, 1925 issue of RADIO NEWS.
Source: Magazine collector Steve Davis
Restoration by: magscanner