This technical memorandum examines issues related to the potential interference impact of a specific Cellular Radiotelephone Service (Cellular) and Personal Communications Service (PCS) jammer transmitter on selected out-of-band and in-band receivers. The National Telecommunications and Information Administration (NTIA) Institute for Telecommunication Sciences performed laboratory and field measurements of a specific jammer transmitter and where appropriate these measurements were used in the interference assessment.
- Contraband Cell Phones in Prisons, Possible Wireless Technology Solutions 
- NTIA Report TR-10-466 (May 2010), Emission Measurements of a Cellular and PCS Jammer at a Prison Facility  (3.3MB pdf file)
- NTIA Report TR-10-465 (February 2010), Emission Measurement Results for a Cellular and PCS Signal-Jamming Transmitter