The Precision Lightweight GPS Receiver (PLGR) can be loaded
with the required operational key through use of the ANCD.
COMSEC keys, FH data, and SOI information can be sent from
one location to another through use of the ANCD in conjunction with a Secure
Telephone Unit (STU).
The method of transmitting SOI information from one location
to another electronically, known as "broadcast", is also fully supported
by the ANCD.
Over-The-Air-Rekey (OTAR) operations, both Automatic Keying
(AK) and Manual Keying (MK) Keying methods, are fully supported by the ANCD.
The ANCD has the ability to receive, store, and transfer
up to four short memos, each six lines in length, with 22 characters per line.
When an ANCD is used for special data storage purposes,
trade-offs between the above COMSEC/FH data and SOI capacities allow the ANCD
storage capability to be tailored to specific unit requirements.
When used for a single or special purpose, an ANCD can store
as many as 20 loadsets (COMSEC and FH data), and two or more division-wide editions
(10 days each). The number of smaller unit SOI editions that can be stored in
an ANCD depends entirely on the size of the SOI extract. An ANCD will also store
as many as 120 COMSEC keys (traffic encryption key [TEK] or key encryption key
[KEK]), or 280 transmission security keys (TSKs).
A typical ANCD data load at the operator level consists
of two loadsets (COMSEC keys and FH data for all six radio channels), each good
for 30 days of operation, plus 60 days of SOI information, structured in six
ten-day editions, containing two 5-day sets each.
For SINCGARS applications, the ANCD replaces COMSEC devices
such as KYK-13, KYX-15, and KOI-18 as well as electronic counter/counter-measure
(ECCM) fill devices MX-10579 and MX-18290.
The ANCD is used primarily for handling of COMSEC keys,
FH data, sync time, and signal operating instructions (SOI) information.
Capable of receiving, storing, and transferring data from
ANCD to ANCD, from ANCD to SINCGARS radios, and from ANCD to other compatible
communications/electronic equipment.