All that will be needed is an antenna. Trying to upload these files directly to your radio will not work. If you click on the link: I am still somewhat that way but have found a couple of niches that get me on the air occasionally. I know I would not want a System Operator opening the microphone on my radio without my knowledge. That is nothing like a cellphone where you call one friend, hey.. As per the document RIC
Is Your Digital Repeater Ham Friendly?
By that time, as I wrote elsewhere in this thread, I had all but stopped being active on amateur radio, but it seemed to me the CB crowd were mostly trying to BS each other as outrageously as possible and that had no appeal to me. It is an on-off keyed system with Text characters are "painted" on the screen, as apposed to being decoded and printed. Most amateur digital modes are transmitted by inserting audio into the microphone input of a radio and using an analog scheme, such as amplitude modulation AM , frequency modulation FM , or single-sideband modulation SSB. So, if and when I ever do get the space, time and money to really get back into it, I think I know what my focus will be:
Frequently asked questions - Amateur radio operator certificates
User Activated —These are talk groups that are carried on repeaters but are only activated when a user wants them turned on. You would not want your bus driver being able to change the programming in the radio. Because of this FEC process, messages are either decoded correctly or not decoded at all, with very high probability. DMR can run in mixed mode but when you setup to support both analog and digital you lose the networking ability that makes these digital modes so compelling. This is the frequency that most radios or programs ask for first.
This mode is a major advancement over AMTOR, with its baud operating rate, Huffman compression technique and true binary data transfer capability. Search the entire site with the power of Google. It is designed with a combination of packet and Amtor Techniques. Maybe you want an network that embraces experimentation. Pre-meeting chat, VE testing and ask the Elmers at 6: