For Medford Police, Channel 2 might be - the output freq for Channel 1 - the input freq for Channel 1 - BAPERN North - BAPERN West - 482.3875 (NEMLEC direct) - some unknown freq. Maybe it means "call me on my cellphone".
For Medford Fire, Channel 2 might be - Metro North Fireground - input of Ch 1 - output of Ch 1 - Metro Fire Red - MetroFire Orange - MetroFire North - etc
Peter sz