3rd generation connection
Upgrading from a 2nd generation radio (RCD 300, RCD 500) to a 3rd generation (RCD 210, RCD 310, RNS 310, RNS 510, RCD 510) requires an antenna/aerial adapter to be fitted. The 2nd generation radios had two seperate connectors for the antenna/aerial connections whereas the 3rd generation still have the two antenna/aerial but [...]