I use Android or iOS smartphones for Winlink and APRS. It works quite well on VHF and UHF. Unfortunately, apart from APRS, packet radio is hardly of any significance today. There are very few Winlink and Digipeater stations left. On shortwave (HF) the situation is even worse. Robust Packet is a method that is also very suitable for shortwave. Yes, with VARA HF and FM there are already very well functioning systems and this also works very well with Windows and also with a Raspberry PI, but not with an Android or iOS smartphone or tablet. However, as I don’t want to take an additional computer with me for my minimal QRP setup, I was looking for a way to still be qrv with Winlink and APRS on shortwave. Julian OH8STN made me aware of the Teensy RPR TNC. I then contacted Robert, DM4RW, from whom I obtained a ready-made device. However, it is also possible to build the device yourself. The Teensy RPR TNC is an SCS tracker clone and works excellently. It is lightweight, small and can be powered via USB or connected directly to a smartphone or computer. The connection also works via BlueTooth, unfortunately not with iOS. Oliver, DL4KA is currently building a housing with a display. This will also enable standalone operation. I am very happy to be able to operate APRS and Winlink on shortwave with Robust Packet. It would be desirable for the group around the Teensy RPR TNC to continue to grow and for more APRS, Digipeater and Winlink RPR stations to become available worldwide, including on shortwave. This would also be useful in the event of a catastrophe when the normal Internet fails and communication can still be maintained. 73, Karl-Heinz DL1GKK
More information about the Teensy RPR TNC:
https://github.com/RobustRobby/RPR-TNC
APRSdroid setup
WoAD Winlink Setup
Windows PinPoint APRS Setup
PinPoint APRS cannot yet initialise the Teensy RPR TNC. It is therefore necessary to do this with Putty first. After the start and the correct settings, the command ESC+@+k is given so that the TNC starts the KISS mode. Putty can then be closed again and PinPoint APRS can be started.
TNC Setup in PinPoint APRS