[RFI] RFI levels

Hare,Ed, W1RFI Hare,Ed, W1RFI" <w1rfi@arrl.org
Thu, 1 Mar 2001 07:27:27 -0500

I wrote:

> When I get back to the office tomorrow, I will post some 
> additional info from the NTIA IONCAP/WINDOWS program (along
> with the URL to download it.)

The levels for man made noise that are cited in the program are:

-110.4 dBm - industrial
-114.7 dBm - residential
-120.0 dBm - rural
-133.6 dBm - remote

This presumably assumes an isotropic radiator.  I am guessing this is a 3
kHz bandwidth.  The data caem from CCIR Report 258. The measurements made by
ARRL showed somewhat lower levels.

The program has to be just about the best IONCAP-based propagation program I
have played with.  It can be downloaded free from:


Ed Hare, W1RFI

FAQ on WWW:               http://www.contesting.com/FAQ/rfi
Submissions:              rfi@contesting.com
Administrative requests:  rfi-REQUEST@contesting.com
Questions:                owner-rfi@contesting.com