Could be a reason here that Wind Shear Radar (surface to altitude) operates in the 400-500 Mhz region. NOAA and the FAA (near airports) have been deploying these systems across the country for some time.
Ron Rogers -WB8ERB- -----Original Message----- From: Laryn Lohman [mailto:[EMAIL PROTECTED] Sent: Thursday, April 08, 2004 12:17 AM To: [email protected] Subject: [Repeater-Builder] Re: Severe Weather vs. Repeater Performance > Our 440 repeaters show almost no affect from snow, rain or wind static. > However the 440 repeaters signals seem to be affected by the wind. You > can watch the signal levels going up and down on your s-meter. > 73 > N3FLR - Frank I've noticed that same exact fading effect with UHF TV signals on windy days. And it's not caused by the antenna blowing around in the wind.... > > > 3. Does lightning effect the noise floor enough to drown out weak signals? > > > > Any Help and ideas would be great! > > Sorry for the long post! > > Respectfully, > > Brian, WD9HSY Definitely. While spotting storms, I've correllated many times the visual sighting of a lightning flash with increased noise on the received signal on our repeater. And when the storm is overhead, the noise floor rises to a much more constant higher level, even between the flashes. All this can and will take out some of the weaker signals even to the point of repeater squelch closing. Solution? Try to get everyone to use better antennas and/or higher power during these noisy times, just as you suggested in your original post. I've not noticed corona noise much at all here.... Laryn K8TVZ Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
