Does anyone know of a good source for transmitter fingerprinting software? We, our ham radio community, have an occasional jammer on one of our 2 meter repeaters and would like to identify the offender. I need something that will be able to record, and catalog, the transmissions. There was software out there years ago that worked on DOS, what I would like is software that will work on either Windows or Linux. RDF has been considered but it would better to positively ID the user for legal purposes. If anyone has a good source or a better way to fix our problem I welcome any input.