| The new "Highspeed Multimedia Modem" for the QO-100 NB transponde - DJ0ABR, DD1US DD1US - update 05.12.2020 r. |
| The new "Highspeed Multimedia Modem" for the QO-100 NB transponde - DJ0ABR, DD1US http://www.dd1us.de/Downloads/QO100%20Multimedia%20Modem%20V%200.42%20Doc.%20V%201.1%20English.pdf |