Hi Tom and the others on this thread:
I have several LoRA-enabled 900 MHz USB-connected radios that are flashed to be stand-alone KISS serial TNCs. Two are unsigned.io RNodes and the other two are TTGO LoRA V2.1 radios. They're all flashed with the unsigned.io rnodeconf tool. In linux-land, the RNodes present as /dev/ttyUSB0 and the TTGO units as /dev/ttyACM0. (I don't know why they behave differently, except maybe cause of the USB chips they use.) When connected to a Windows box the RNodes run without any USB serial driver, while the TTGO nodes require a serial port driver available on git-hub?).
I have a node set up at my house, on an antenna in the window, and it connects just fine via USB to APRSIS32 running on a Windows 7 box. It presents as a KISS serial modem. I have the LoRA radio set up for approximately 1100 baud to maximize the range. Like you and others have discussed, it'd be great to plug at least one of these into a RPi running direwolf, and get "cross-band" connectivity. Couldn't I set up direwolf to recognize a kiss connection from a serial port within the same RPi, and pass packets between the LoRA radio and the radio natively connected to direwolf?
I'm mildly interested in this since my tests at +17 dBm tx out (the max that the Semtech SX1276 does) has done over 10 km in typical suburban terrain. (Note that my house is about 200' higher than my part of town, so maybe that's cheating...) The other end is another of those radios, connected to a Windows PC in my truck via USB, with the win pc running APRSIS32 as well.?
Anyway, I would like to be able to use these LoRA radios as an adjunct, or backhaul, or just another band radio that gets packets from 2m and spits them out on 900, and vice-versa.
Cheers and 73 - Jon N7UV
