User manual

3. Digital voice mode compatibility chart
ARD300 might sometimes misinterpret white noise as a digital mode and try to
decode it. This does not represent a device malfunction.
The D-Star call-sign might sometimes not appear on the LCD screen. The most likely
reasons are:
-ARD300 did not receive the header at the beginning of each transmission, as the
header contains the call-sign data. This is likely to happen during receiver SCAN or
SEARCH.
-Poor quality of the received signal.
The D-Star call-sign information might sometimes disappear in the middle of a
transmission. The cause for this is sudden interruption of the signal, due to poor
reception conditions. Whenever this happens, ARD300 will indicate “BSY D-STAR”
and wait for the next valid transmission header containing the call-sign information.
The ARD300 decoding being based on the receiver’s IF OUT signal, the receiver’s
reception mode setting does not matter. Nevertheless for SCAN and SEARCH, the
receiver’s squelch has to be set properly in order to correctly stop on the desired
signal.
DIGITAL MODE BANDWIDTH MODE VARIOUS COMPATIBLE VOCODER
ARD300 VOICE
DECODING
D-STAR 12.5kHz AMBE
O
ALINCO DIGITAL 12.5kHz AMBE
O
12.5kHz V/D mode AMBE+2
O
12.5kHz Voice FR mode
X
6.25kHz NON-ENCRYPTED AMBE+2
O
6.25kHz ENCRYPTE D AMBE+2
X
6.25kHz REGULAR MODE NON-ENCRYPTED AMBE+2
O
REGULAR MODE
DIGITAL SCR AMBLING (15 BIT)
AMBE+2
O
ENCRYPTE D
X
TRUNKING
X
12.5kHz
X
6.25kHz dPMR446 AMBE+2
O
6.25kHz TIER 1 AMBE+2
O
TIER 2
X
TIER 3
X
6.25kHz & 12.5kHz PHASE 1 NON-ENCRYPTED IMBE
O
PHASE 1 ENCRYPTE D
X
PHASE 2
X
TIER 1 NON-ENCRYPTED AMBE+2
O
ENCRYPTE D AMBE+2
X
TIER 2 NON-ENCRYPTED AMBE+2
O
ENCRYPTE D AMBE+2
X
TIER 3 TRUNKING AMBE+2
X
12.5kHz
YAESU DIGITAL
DIGITAL CR
NXDN
DPMR
P25
DMR
4