USFS Radio frequencies
Actually, it's not really a secret, but I'm not sure about the accuracy of the information. Region 6, which consists of all the forests in Washington and Oregon, recently changed their frequency plan. Some frequencies were left intact, but inputs changed and some forests and BLM units went to completely different frequencies, some of which I am still trying to determine. Some forests, like the Fremont-Winema, instead of having a forest net with eight repeaters, went to a system where they are using only two repeaters to a frequency and have a total of six frequencies for forest, instead of two forest nets. A lot of the info that I have is outdated. I did notice, though, that there are frequencies for the Mt. Hood NF in the database.