The Transverter Module for the ADT-200A ADAT Transceiver by Hans HB9CBU It took a while to complete the project - but Hans finally succeeded in finishing this very ambitious project: A 6m, 4m and 2m transverter module for the ADT-200A. This beauty is a complete receive and transmit module for the 6m, 4m and 2m Amateur Radio frequency bands. See also more information on HB9CBU's website . Along with the new module a much improved and enhanced firmware version was developed by Hans: Version 1.40g is available for all ADT-200A owners directly from Hans HB9CBU. When installed into the ADT-200A, the back of the devices now has some more antenna sockets: On the frontpanel, the newly available frequencies along with new features for e.g. FM modulation are selectable. The ADT-200A is more than 10 years old now but still gets improvements through software upgrades. The quality of the RF and also audio sections in this device made Prof. Dr. Ulrich Rohde designate the ADT-200A as the "