NXDN™ IC-F5400D/IC-F6400D SERIES PRODUCT GUIDE
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Voice recorder function
The voice recorder function can record both transmitting and receiving voice audio onto a microSD* or
microSDHC* card (hereinafter called microSD* card). The recorded voice audio can be played back on the
transceiver or a PC.
*User supplied.
The voice recorder function specifications are as follows.
Digitization method: PCM
Sampling frequency: 8 kHz
Bit rate:
16 bit
File format:
WAVE format
The recordable time for each microSD card’s capacity is shown in the following table.
Table 4-2. The recordable time (theoretical value)
Card type
Card capacity
Recordable time
microSD
512 MB
8 hours
1 GB
15.6 hours
2 GB
31.3 hours
microSDHC
4 GB
62.5 hours
8 GB
125 hours
16 GB
250 hours
32 GB
500 hours
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The DES/AES encryption function
A 56 bit DES encryption function can be used. (The IC-F5400D/IC-F6400D series transceiver has 4 DES
keys by default.)
When the optional UT-134 is installed in the transceiver, the function will be upgraded as follows.
If you want to use the UT-134, update the main unit firmware to revision 1.6 or later, and program the DES
key with the optional CS-KLD2.
The number of DES encryption keys has been increased from 4 to 64.
When the optional UT-134 is installed, the originally used 4 DES keys must be reentered.
If you purchase the Activation key, 256 bit AES encryption can also be used. In this case, a total of 64
encryption keys that include both AES and DES can be used.
The required items to use the DES/AES encryption function are described in Table 4-3.
Table 4-3. The required items to use the DES/AES encryption function
To use 4 or less DES
encryption keys.
To use 5 or more DES
encryption keys.
To use AES
encryption keys
Transceiver’s default
function.
YES NO
NO
Activation key is required.
NO
NO
YES
(ISL-AKAES)
The optional UT-134 is
required.
NO YES
YES
Required software to enter
the key.
CS-F3400D CS-KLD2
CS-KLD2
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