
Equipment at NAJ, Great Lakes, IL, ~1918

View of Radio Tower at NAJ, Great Lakes, IL, ~1918

Receiver at Ralph Mathew’s 9ZN in Chicago

Transmitter at Ralph Mathews 9ZN in Chicago

Zenith Portable Station WJAZ Near Pike’s Peak, CO

Zenith Portable Broadcast Station WJAZ in Nevada Desert, 1925

WJAZ Set-up at Pike’s Peak, 1925

The “Gang” at Pike’s Peak: ‘Allen, Ross, Wagner, RHGM’

WSAX First Broadcast of Lion’s Roar, LA, 1925: “RHGM scared, in foreground”

WSAX in New Mexico: “Broadcasting each night from wherever we were”

RHG Mathews at His Station, 9ZN, Chicago, 1921

Mathews’ First Station, 9IK (Originally RM) in 1911

Original 9IK, 1316 Carmen Ave, Chicago, later 9ZN at 5552 Sheridan Rd, Chicago

First Antenna for 9ZN, Chicago

9ZN Antenna Tower

9ZN Antenna Tower 2

US Navy Transmitter

9ZN with Unidentified Tuner and Audion Detector

9ZN with Early Transmitter

Another View of 9ZN with Early Transmitter