home *** CD-ROM | disk | FTP | other *** search
/ NetNews Usenet Archive 1993 #3 / NN_1993_3.iso / spool / rec / radio / shortwav / 9742 < prev    next >
Encoding:
Text File  |  1993-01-22  |  1.6 KB  |  32 lines
  1. Newsgroups: rec.radio.shortwave
  2. Path: sparky!uunet!spool.mu.edu!yale.edu!newsserver.jvnc.net!louie!huey.udel.edu!hanavin
  3. From: hanavin@huey.udel.edu (Chuck Hanavin)
  4. Subject: Re: Antenna Tuner Question
  5. Message-ID: <1993Jan22.123454.28476@udel.edu>
  6. Sender: usenet@udel.edu (USENET News Service)
  7. Nntp-Posting-Host: huey.udel.edu
  8. Organization: University of Delaware, Newark
  9. References: <SWL-L%93012116060626@OHSTVMA.ACS.OHIO-STATE.EDU>
  10. Date: Fri, 22 Jan 1993 12:34:54 GMT
  11. Lines: 19
  12.  
  13. In article <SWL-L%93012116060626@OHSTVMA.ACS.OHIO-STATE.EDU> RRS03@ALBNYDH2.BITNET writes:
  14. >From: Robert R. Stone
  15. >+----------------------------------------------------------------------------+
  16. >With all the discussion of antennas and tuners, I wonder if someone would care
  17. >to differentiate tuners from preselectors. Most of the tuner discussion seems
  18. >to indicate that the main use of the tuner for SWL is in fact the same job the
  19. >preslector does - eliminating cross-band modulation. Since antenna impedence
  20. >is frequency dependent, perhaps they do the same thing.
  21. >+----------------------------------------------------------------------------+
  22. >I also noted in Harry Helms recent book on SWL, he talks 'tuner' in the text
  23. >but shows a picture of a preselector.
  24. >+----------------------------------------------------------------------------+
  25.  
  26. Yes a preselector is the same thing as an antenna tuner. However, 
  27. preselector is usually linked with reciever tuners, they generally
  28. can't handle much power. Where as "antenna tuners" are usually made
  29. for transmitting, but work just great as preselectors for recievers.
  30.  
  31. Chuck [WB3FJJ]
  32.