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.
- http://finance.groups.yahoo.com/group/radios4sale/

LMR - Land Mobile Radio for Professionals
- Discussion of commercial two way radio systems, accessories, and new products .
- http://finance.groups.yahoo.com/group/LMR/

TrunkingForum
- Discussion for trunked radio systems. Aimed primarily at trunked system managers, technicians, operators and those associated with the industry.
- http://finance.groups.yahoo.com/group/TrunkingForum/

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.
- http://finance.groups.yahoo.com/group/Tower-pro/

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.
- http://health.groups.yahoo.com/group/EM-risks/

LMRPager
- Discussion on the operation of radio systems, paging systems, pagers, and pager programming .
- http://groups.yahoo.com/group/lmrpager/

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.
- http://groups.yahoo.com/group/smart-net/