4 ms·

Roaring 20s Superhets

9 points by jhallenworld 7y ago

jhallenworld 7y ago
They were nearly all home built from kits to avoid RCA patents.
PopePompus 7y ago
Is there any difference between a heterodyne receiver and a superheterodyne receiver?
- mannykannot 7y ago
  "Superheterodyne" is a contraction of "supersonic heterodyne", where "supersonic" indicates frequencies above the range of human hearing. https://en.wikipedia.org/wiki/Superheterodyne_receiver https://en.wikipedia.org/wiki/Superheterodyne_receiver
- jhallenworld 7y ago
  The super means above hearing range. In a heterodyne receiver (if there was ever such a thing), you would hear the IF frequencies.
- rhinoceraptor 7y ago
  Heterodyne is a signal processing technique, and superheterodyne is an application of that for radio tuning. This video is a great explainer (and I also highly recommend every other video on the channel): https://www.youtube.com/watch?v=hz_mMLhUinw https://www.youtube.com/watch?v=hz_mMLhUinw
Aloha 7y ago
https://web.archive.org/web/20190819150125/http://www.duanesradios.info/ https://web.archive.org/web/20190819150125/http://www.duanes... @dang it'd be great if we had an archive link to load the index of versions from archive.org
scottlocklin 7y ago
Superhets were pretty rare in the 1920s. All kinds of wacky and wonderful forms of tuning and amplification were used in that era of radio (as someone below mentioned, to avoid RCA patent infringement), and of course the aesthetics of the machines were top notch. Collected them for a while myself, though you rapidly run out of room for such hobbies. Here's some eye candy for folks who are interested in the aesthetics of the era: https://www.radioblvd.com/20sRadio.html https://www.radioblvd.com/20sRadio.html
- jhallenworld 7y ago
  I like the Atwater Kent models 35 and above- they have the same controls as modern radios: a single dial for tuning even if they are TRF receivers. Norman Rockwell had one: http://wd4eui.com/Pictures/Antique_Radios/AK35_NRockwell.jpg http://wd4eui.com/Pictures/Antique_Radios/AK35_NRockwell.jpg

9 points by jhallenworld 7y ago

jhallenworld 7y ago

They were nearly all home built from kits to avoid RCA patents.

PopePompus 7y ago

Is there any difference between a heterodyne receiver and a superheterodyne receiver?

mannykannot 7y ago
"Superheterodyne" is a contraction of "supersonic heterodyne", where "supersonic" indicates frequencies above the range of human hearing. https://en.wikipedia.org/wiki/Superheterodyne_receiver https://en.wikipedia.org/wiki/Superheterodyne_receiver
jhallenworld 7y ago
The super means above hearing range. In a heterodyne receiver (if there was ever such a thing), you would hear the IF frequencies.
rhinoceraptor 7y ago
Heterodyne is a signal processing technique, and superheterodyne is an application of that for radio tuning. This video is a great explainer (and I also highly recommend every other video on the channel): https://www.youtube.com/watch?v=hz_mMLhUinw https://www.youtube.com/watch?v=hz_mMLhUinw

Aloha 7y ago

https://web.archive.org/web/20190819150125/http://www.duanesradios.info/ https://web.archive.org/web/20190819150125/http://www.duanes... @dang it'd be great if we had an archive link to load the index of versions from archive.org

scottlocklin 7y ago

Superhets were pretty rare in the 1920s. All kinds of wacky and wonderful forms of tuning and amplification were used in that era of radio (as someone below mentioned, to avoid RCA patent infringement), and of course the aesthetics of the machines were top notch. Collected them for a while myself, though you rapidly run out of room for such hobbies. Here's some eye candy for folks who are interested in the aesthetics of the era: https://www.radioblvd.com/20sRadio.html https://www.radioblvd.com/20sRadio.html

jhallenworld 7y ago
I like the Atwater Kent models 35 and above- they have the same controls as modern radios: a single dial for tuning even if they are TRF receivers. Norman Rockwell had one: http://wd4eui.com/Pictures/Antique_Radios/AK35_NRockwell.jpg http://wd4eui.com/Pictures/Antique_Radios/AK35_NRockwell.jpg