- 1. [TowerTalk] How far does RFI travel? (score: 1)
- Author: Ray Benny <rayn6vr@cableone.net>
- Date: Mon, 9 May 2016 03:21:27 -0400 (EDT)
- body {height: 100%; color:#000000; font-size:12pt; font-family:arial, helvetica, sans-serif;}This may seem a strange question to ask and there maybe many answers, so I will try to be specific as to w
- /archives//html/Towertalk/2016-05/msg00184.html (7,774 bytes)
- 2. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Patrick Greenlee <patrick_g@windstream.net>
- Date: Mon, 9 May 2016 07:31:43 -0500
- Of course there is no magic distance beyond which RFI hits a "Gardall Shield." Distance attenuates and at some point the level will go significantly below your natural noise floor (world wide lightni
- /archives//html/Towertalk/2016-05/msg00185.html (8,955 bytes)
- 3. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Dave Thompson <thompson@mindspring.com>
- Date: Mon, 9 May 2016 09:02:31 -0400 (GMT-04:00)
- Power line noise can radiate over a long distance. Even underground can radiate but usually this type of noise stops around 9 MHz. Touch on lights and bad wall warts especially the flat switching typ
- /archives//html/Towertalk/2016-05/msg00186.html (11,540 bytes)
- 4. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Patrick Greenlee <patrick_g@windstream.net>
- Date: Mon, 9 May 2016 08:19:48 -0500
- Yes, aquariums! The metallic contact type aquarium thermostats can make significant noise bursts when making and breaking the heater current. Of course the make or break generated noise burst will co
- /archives//html/Towertalk/2016-05/msg00187.html (11,888 bytes)
- 5. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: jimlux <jimlux@earthlink.net>
- Date: Mon, 9 May 2016 06:30:55 -0700
- Halide lamps for grow operations in residential areas do a nice job trashing 40 meters. Generally recognizeable because it comes on and goes off at the same time every day. __________________________
- /archives//html/Towertalk/2016-05/msg00192.html (7,851 bytes)
- 6. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Mike Fahmie via TowerTalk <towertalk@contesting.com>
- Date: Mon, 9 May 2016 17:14:06 +0000 (UTC)
- Long ago, I was asked by a police officer friend to carry my portable HF receiver by a building that they believed housed a stolen mini-computer. They hoped that the character/rhythm of the RFI woul
- /archives//html/Towertalk/2016-05/msg00202.html (12,911 bytes)
- 7. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Patrick Greenlee <patrick_g@windstream.net>
- Date: Mon, 9 May 2016 13:00:50 -0500
- TEMPEST is THE word. *TEMPEST*is aNational Security Agency <https://en.wikipedia.org/wiki/National_Security_Agency>specification and aNATO <https://en.wikipedia.org/wiki/NATO>certification^[1] <https
- /archives//html/Towertalk/2016-05/msg00204.html (15,863 bytes)
- 8. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Bob K6UJ <k6uj@pacbell.net>
- Date: Mon, 9 May 2016 11:14:33 -0700
- My comment to the original poster. I had a new housing development go in near me and no RFI problems developed. The power feeding the new development is all underground. Mine is not, we have power po
- /archives//html/Towertalk/2016-05/msg00205.html (17,036 bytes)
- 9. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Ray Benny <rayn6vr@cableone.net>
- Date: Mon, 9 May 2016 14:22:49 -0400 (EDT)
- Thanks for the good replies and suggestions. As recommended, first thing for me to do is establish a noise background reference for my station. This would include readings at different times of day/n
- /archives//html/Towertalk/2016-05/msg00206.html (14,174 bytes)
- 10. Re: [TowerTalk] How far does RFI travel? (score: 1)
- Author: Kelly Taylor <ve4xt@mymts.net>
- Date: Mon, 9 May 2016 11:21:26 -0500
- So, is that also a techno lesson for law enforcement? ;-) 73, kelly, ve4xt Sent from my iPhone _______________________________________________ _______________________________________________ TowerTal
- /archives//html/Towertalk/2016-05/msg00209.html (9,153 bytes)
This search system is powered by
Namazu