North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: NOAA warning for rf communications

  • From: Keptin Komrade Dr. BobWrench III esq.
  • Date: Fri Oct 24 09:54:46 2003

Well, this is more than you really wanted to know, but....

ELV Exremely Low dc - 3khz
VLF Very Low Freq 3khz - 30khz
LF Low Frequency 30khz - 300Khz
MF Medium 300Khz - 3Mhz
HF High 3mhz-30mhz
VHF Very High 30mhz-300mhz
UHF Ultra High 300-3Ghz
SHF Super High 3Ghz - 30 Ghz
EHF Extremely High 30Ghz - 300Ghz

Different folks put the breaks at slightly different places (the.g. the amatuer radio community puts the hf/vhf break @ 50Mhz and the MF/HF break @ 1.8Khz.

And, as a side note, I can't find the URL, but the US Cong is talking about pulling all the funding for the NASA space weather programs. Would mean less/no warning of this sort of stuff.

We now return you to our regularly scheduled off topic discussions


Owen DeLong wrote:
This will not likely affect point-to-point line-of-site communications above 50Mhz.
It will likely affect non-terrestrial communications and HF communications depending
on ionospheric reflection.


--On Friday, October 24, 2003 07:15:29 AM -0400 Todd Vierling <[email protected]> wrote:

On Thu, 23 Oct 2003, Roy wrote:

: "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.

"High frequency communications"?

We *are* talking about multi-GHz frequencies here.

-- Todd Vierling <[email protected]> <[email protected]>