SARA Field Day 2011
Split Rock Lighthouse 2012
Split Rock 2013
2014 SARA Officers
AGØH 2013
Ice Station WØJH 2014
SARA Work Party 2
SARA Work Party 1
WØJH 2004
Fitzgerald Crew 2012

Propagation

The ARRL website has an excellent amount of material on propagation.  For starters, click on this link:  http://www.arrl.org/the-sun-the-earth-the-ionosphere