Do you have anything that I could change the guts out of the brains in the transceiver (not sure if that’s the correct terminology) box and replace with a 4g/5G card to make one of these work on today’s network (https://www.ebay.com/itm/284826500225?h … Sw0aVii98d)? I have seen this guy’s post (https://www.electro-tech-online.com/thr … 0s.162764/) where he is using a modern phone and going through the Bluetooth, but I would rather stay as original as possible if it can be done. I really appreciate any help you can provide.
Jim