Is this statement true?
<<If you mean directly with the FTM-350 via the radio's serial port (i.e. not off the Internet or from another radio with a TNC, etc), then NO APRS program will work.
By comparison with the Kenwood APRS radios, the Yaesu radios have a serious design flaw/oversight: The Yaesu radios DO NOT allow external programs to interact with their internal TNCs. They only do APRS with their own front panel display and keyboard.
The only computer program that works with the Yaesu radios is their own memory configuration utility.
As a result, NO computer-based APRS software will work with the Yaesu radios.
>>>
Well, not really. I'm not aware of anyone that has gotten the serial data that comes out of the APRS modem to work with any APRS software. This is either an oversight by Yaesu or they just want it to work that way. Basically, you can't access the internal TNC from external software. However, you can use the serial port with other software or TNCs and you can see or read the data stream coming out, so the statement isn't entirely correct.