Smartnet - This list is for anyone involved with or interested in Motorola SmartNet, SmartNet Simulacst, and SmartZone radio trunking systems. This list is for professional discussion and not for scanner hobby. LMRPager - Discussion on the operation of radio systems, paging systems, pagers, and pager programming . EM Risks - Discussions on health risks of electromagnetic fields, cellular phones, radio and TV broadcasting stations. Public concerns of electrosmog, and exposure to radiofrequency radiation. Tower-pro mailing list - A remailer for persons interested in commercial/governmental tower work from erection to antenna installation to maintenance. This is not a group for amateur radio discussions as another list "Tower-talk" already exists for that purpose. TrunkingForum - Discussion for trunked radio systems. Aimed primarily at trunked system managers, technicians, operators and those associated with the industry. LMR - Land Mobile Radio for Professionals - Discussion of commercial two way radio systems, accessories, and new products . Radios4sale - Commercial land mobile radio equipment and related products for sale or purchase. The primary target of this list is LMR dealers who have used or excess inventory.