Marked: "Radiola VI / Model - AR 895"; on inside tag: "Detector Amplifier / Model AA-1400 / Pat'd: Nov 7, [19]05 / Feb 18, [19]08 / Apr 12, [19]10 / Oct 6, [19]14 / Oct 22, [19]18 / Dec 23, [19]19 / ...

Marked: "Radiola / III-A / Type RL / Range 220-550 Meters"; patent notice and license data follows. Also: "8951 (8-19-24) [Serial No.] 447454 RCA". The Model III-A is a regenerative receiver designed ...

The radio connection to Philadelphia also touches the receiver side.RCA is still a popular brand name in consumer electronics, and itshistory goes back to Philadelphia as well. But RCA isn’t the ...