Encyclopedia > TRF

  Article Content


The Tuned Radio Frequency Receiver was invented by Edwin Armstrong.


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
September 11, 2001 Terrorist Attack City of New York casualties

... 45 Jayesh S. Shah[?], 38 Khalid M. Shahid[?], 25 Mohammed Shajahan[?], 41 Gary Shamay[?], 23 Earl Richard Shanahan[?], 50 Neil Shastri[?], 25 Kathryn Anne ...