I might take a measure of variability at different frequencies to see if the range size is correlated to frequency. Bret/N4SRN -- View this message in context: http://elecraft.365791.n2.nabble.com/Reported-RX-Frequncies-in-WSJT-X-tp7624182p7624211.html Sent from the Elecraft mailing list archive at Nabble.com.