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
ENCRYPTED
AMBE+2
X
6.25kHz
REGULAR MODE
NON-ENCRYPTED
AMBE+2
O
REGULAR MODE
SCRAMBLED
AMBE+2
O
ENCRYPTED
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
ENCRYPTED
X
PHASE 2
X
P25
YAESU DIG ITAL
DIGITAL CR
NXDN
DPMR
4