Home |
Search |
Today's Posts |
#20
![]() |
|||
|
|||
![]() "Frank Gilliland" wrote in message ... On Thu, 1 Sep 2005 06:24:17 -0400, "Dee Flint" wrote in : snip In disasters, the real problem is What experience have you had with disaster communications that makes you think you can draw any sort of conclusion as to what the problems are or might be? not the rules but the nature of radio wave propagation on the 11 meter band (as well as the similar 10m and 12m ham bands). You can get close in (10 to 20 miles) via line of site or you get skip out to thousands of miles via ionospheric propagation when the solar flux is high enough. However the intermediate distances of a few hundred miles just are not going to be covered unless you are lucky enough to get some uncommon propagation modes like backscatter. What makes you think that DX radio comprises all -- or even a major part of -- communications in a disaster or emergency situation? I did not mention DX. But there is often a great need to communicate within the surrounding couple of hundred miles. Dee D. Flint, N8UZE |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Amateurs Handle Emergency Comms in Wake of Hurricane Ivan | Shortwave | |||
ARNewsline 1358 - Aug 22 2003 | Policy | |||
ARNewsline 1358 - Aug 22 2003 | Dx | |||
ARNewsline 1358 - Aug 22 2003 | Dx |