Encyclopedia > TRF

  Article Content

TRF

The Tuned Radio Frequency Receiver was invented by Edwin Armstrong.

(when?)

The process of amplifying an input signal on a given frequency over several stages. The disadvantage to this process being that each stage must be tuned to the input carrier frequency individually. Replaced with the Superheterodyne receiver also invented by Edwin Armstrong.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Eratosthenes

... and science. He was a good friend to Archimedes. Circa 255 BC he invented the armillary sphere, which was used till 17th century. He believed the Earth was a sphere ...