|
Synchrophase MU-1 with battery box
Binocular coil, SLF condenser, and
six-step volume control illustrated.
April 1925 Radio News
|
|
Synchrophase MU-1 with one-dial tuning
Introduction of the one-dial chain drive
September 1925 Popular Science Monthly
|
|
Synchrophase MU-1 and CR-18 receivers
October 1926 Popular Science Monthly
|