Radio Shack also made a base station version of the CB-Fone, although it was less popular than their mobile versions. The Realistic TRC-454 was a full-featured AM base station with large dual S/RF and SWR/CAL meters and instant Channel 9 emergency access. Unlike the Johnson Messenger and some other “telephone CBs”, the handset on the TRC-456 is detachable and terminates in a standard 5-pin DIN plug. This way, if you want to use a regular hand mic or desk mic, you’re able to do so without having to internally rewire the radio.