Latest Videos
Quantum Spectrum - a DSP option for SDRs
and maybe ALL radios (someday)
At the Connections Museum in Seattle
the insane telephone technology that led to today's computers
The Story of Heil Sound
Rock and Roll Hall of Fame presentation
Latest Blogs
Latest Audio
The Birth, Life, and Death of the Cosmophone
As told by the inventor, Butch Mason W6KAG. Recorded by K6VOI in 1970
Sea Rad MM-50 marine radio
audio from the DX-60 Net Nov. 14, 2021
Jean Shepard K2ORS, "Ham Radio" (aka "Heising Modulation")
originally broadcast Jan. 29, 1965
NE1S - Larry from Gray, Maine, operating a 1929 Hartley transmitter
Recorded 11/9/19 on 40 meters
Final Call for N8ECR (SK) - Midwest Classic Radio Net 12/8/18
Harry N9CQX and Bill K8DBNLatest Links
RAN Technology Gallery Images
Gallery: EF Johnson Museum
EF Johnson Museum in Waseca MN
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)
EF Johnson Museum
Posted: 04/26/2021 (ranickels)