Mike, et al, I had a reasonable idea what the IEEE dictionary said although I do not have a copy myself. the problem being I find it a little contradictory and tend to agree with the comments from Douglas McLean in that although the IEEE say RF is between the audio and infrared spectrum it suggests that practicable limits are down to . This is well within the audio band. You see my problem. As Douglas suggests I believe it can be much lower than that even.
I was really wondering if there was any official cut off point for an RF frequency (ie when the frequency is something other than an RF frequency). My interest is in terms of EMC as suggested in my original message with the reference to CISPR 14. I should have explained then that I had an idea of the definitions from the IEC and IEEE but they both seem to be a little contradictive as mentioned earlier. The term "Radio Frequency Energy" is also used in CISPR 14. ---------- Forwarded Message ---------- From: Mike Hopkins, INTERNET:[email protected] TO: EMC-PSTC - IEEE, INTERNET:[email protected] "'Kevin Richardson'", kr_1 DATE: 6/01/99 1:40 AM RE: RE: Radio Frequency - Definition Sender: [email protected] Received: from ruebert.ieee.org (ruebert.ieee.org [199.172.136.3]) by hil-img-7.compuserve.com (8.8.6/8.8.6/2.17) with ESMTP id JAA00398; Tue, 5 Jan 1999 09:40:04 -0500 (EST) Received: by ruebert.ieee.org (8.8.8/8.8.8) id JAA16789; Tue, 5 Jan 1999 09:34:45 -0500 (EST) Message-ID: <[email protected]> From: Mike Hopkins <[email protected]> To: "'Kevin Richardson'" <[email protected]>, EMC-PSTC - IEEE <[email protected]> Subject: RE: Radio Frequency - Definition List-Post: [email protected] Date: Tue, 5 Jan 1999 09:34:29 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2232.9) Content-Type: text/plain Sender: [email protected] Precedence: bulk Reply-To: Mike Hopkins <[email protected]> X-Resent-To: Multiple Recipients <[email protected]> X-Listname: emc-pstc X-Info: Help requests to [email protected] X-Info: [Un]Subscribe requests to [email protected] X-Moderator-Address: [email protected] Per IEEE 100-1988 "Standard Dictionary of Electrical and Electronics Terms" "(A) (Loosly). The frequency in the portion of the electromagnetic spectrum that is between the audio-frequency portion and the infrared portion. (B) The frequency useful for radio transimision. Note: The present practicable limits of radio frequency are roughly 10kHz (kilohertz) to 100 000 MHz (megahertz). Within this frequency range electromagnetic radiation may be detected and amplified as an electric current at the wave frequency." Mike Hopkins [email protected] > -----Original Message----- > From: Kevin Richardson [SMTP:[email protected]] > Sent: Monday, January 04, 1999 9:30 PM > To: EMC-PSTC - IEEE > Subject: Radio Frequency - Definition > > I am trying to find definitions for two terms: > a) "Radio Frequency" ie what is radio frequency, and what frequencies are > recognized as being RF rather than what may be practical for transmission > purposes ?; and > b) "radio frequency energy" (used in the first paragraph of the scope of > CISPR 14 and on a few other occasions throughout the standard) > > Can anyone provide a pointer to what could be recognized as an official > definitions for these terms? Any input would be most appreciated. Thank > you. > > Best regards, > Kevin Richardson > Stanimore Pty Limited > "Specialists in Technology Requirements and Compliance" > Ph: 02-43-29-4070 Fax: 02-43-28-5639 Int'l: +61-2-43-2x-xxxx > Email: [email protected] (Internet) or > [email protected] (Internet) or > 100356,374 (Compuserve) > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
