It's a bit clumsy until you get used to it but it works fine. They say something and then "over" so the transmittint Ham operator knows to flip the switch to receive and vice versa. Once the patch is established, the non-ham participants do have to take turns. While it took two ham operators working in concert to make this happen, it's been done routinely for decades. This device, known as a "phone patch" enables a non-ham sitting in his or her home, talking on the telephone, to use a ham's station at the other end of the phone call to talk to another ham station which, in turn, was connected through his telephone to someone else (another non-ham) sitting in his or her home. It was a trivial electronic design project to connect a telephone line to a ham radio station. In the 50s and 60s, long distance (particularly international long distance) phone calls were expensive. The phone patch is one thing that hams can offer to leave a positive feeling about Ham Radio with the public. The Yaesu LL-7 phone patch allows linking your FT-1000MPV or FT-1000MPV Field to the public telephone line to provide two-way simplex communications on. But most non-hams have no contact with (or opinion of) Ham Radio on a day-to-day basis. Hams are licensed to act in service of the community when called upon.
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March 2023
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