Need more info go here http://www.spaceweather.com/ it has a embeded link that explains affects on communications too. -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of Scott Granados Sent: Monday, October 27, 2003 12:32 PM To: Owen DeLong Cc: Roy; Chris Yarnell; nanog@merit.edu Subject: Re: NOAA warning for rf communications Just to add, it seems that I over extended the hf band the cut off as was correctly pointed out was 30 mhz I believe. And if anything since friday the vhf band seems improved, 2 meters has been quite good. I'd say that I have not noticed any disruption although I've heard tell of disruptions in the gps network I haven't experienced them personally. On Sun, 26 Oct 2003, Owen DeLong wrote:
It means HF in the traditional sense of the word. The cellphone issue is due to the use of satellite links to many cells. There is no reason to believe that line of sight (LOS) communications VHF and above are likely to be impacted by these events as long as they are not depending on ionospheric propogation.
HF depends on ionospheric bounce. Satellites depend on the signals being able to penetrate the ionosphere. Both of these will be effected. Terrestrial microwave and VHF line of site, 802.11, 2.4GHz cordless phones and the like do not.
Owen KB6MER
--On Friday, October 24, 2003 9:31 AM -0700 Scott Granados <scott@wworks.net> wrote:
Wouldn't 2.4 ghz fall in that range or does hf mean hf in the classical sense of something on the scale of 3 to 49 mhz or so.
On Thu, 23 Oct 2003, Roy wrote:
According to the notice
"Satellite and other spacecraft operations, power systems, high frequency communications, and navigation systems may experience disruptions over this two-week period."
I think you will find that 802.11b and other terrestrial microwave LOS links don't meet any of those criteria and should be unaffected. Some small increase in the noise level may be detected.
Chris Yarnell wrote:
my office experienced 802.11b weirdness (sudden bouts of 0% signal
for
no apparent reason) earlier this week. i'm fully expecting more tomorrow. :)
There is a high likelihood that things like 802.11, licensed and unlicensed microwave links, and certainly satellite links will sustain interference over the next few days. I assume that everyone on the list is both aware, and prepared ;-)