The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Walter Dittel GMBH

Named as the FAA publishes it on its approvals.

Approved to make 6 classes of equipment. FAA spelling: Walter Dittel GmbH.

Equipment approvals technical standard order authorisations

2002-10-17TSO-C38D · VHF RADIO COMMUNICATIONS RECEIVING EQUIPMENT OPERATING WITHIN THE RADIO FREQUENCY... · VHF Radio Communications Transmitting Equipment · instruments and avionics
2002-10-17TSO-C37D · VHF RADIO COMMUNICATIONS TRANSMITTING EQUIPMENT OPERATING WITHIN THE RADIO FREQUENCY... · VHF Radio Communications Transmitting Equipment · instruments and avionics
1994-01-01TSO-C37C · VHF RADIO COMMUNICATION TRANSMITTING EQUIPMENT OPERATING WITHIN 117.975 TO 136.000 MEGAHERTZ · * · instruments and avionics
TSO-C38B · Vhf Radio Communications Receiving Equipment Operating Within 117.975 To 136.000 Megahertz · *, *, * · instruments and avionics
TSO-C37B · Vhf Radio Communications Transmitting Equipment Operating Within The Radio Frequency... · *, * · instruments and avionics
TSO-C38C · Vhf Radio Communications Receiving Equipment Operating Within 117.975 To 136.000 Megahertz · * · instruments and avionics

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.