Section 7
Operating practices and procedures
Digital interfaces
7F1 Recall that there are Digital Voice (DV) and Digital Data (DD) modes available and that different systems may not be compatible.
In Amateur Radio things have moved on in the last 20 years and as well as analogue signals we now have digital signal, DV which stands for Digital Voice and DD which stands for Digital data.
Both DV and DD have there own unique systems and they are not necessarily compatible with each other.
Recall that appropriate radio equipment is needed for each of these digital systems.
The "normal" radio equipment which has been on the market for many year cannot cope with DV and DD modes and thus appropriate equipment is required so that you can receive and transmit DV and DD.
Recall that DV radios may embed the call sign in the transmission and this will need to be adjusted if using borrowed equipment.
A very new items of which you need to be aware is that unlike the "normal" radio transceiver DV transceivers can and embed your callsign into the transmission and this can cause a problem if you borrow another radio amateurs equipment as you inadvertently will be transmitting the other persons callsign in contravention of the licence which could lead to retribution on you.
The origin of some of the text on this page is from the RSGB with additions by the web master