Radio Shack ADV0801 Owner's Manual page 83

ADV0801 Owner's Manual Draft
the background of a voice transmission.
P25 NAC
P25 NAC stands for Project 25 Network Access Code. NAC is a part of the APCO Project 25
digital radio standard, and works much like CTCSS or DCS to block undesired transmissions
from a receiver. Project 25 voice information is sent as a series of data packets, and each packet
includes the NAC that has been configured in the transmitter. A receiver can be programmed to
unmute and play a voice transmission only when the packets from the transmitter include the
correct NAC. Your scanner operates in the same way. Like CTCSS and DCS, it can detect the
NAC that is in use on a transmitter, and will allow you to store the code value with a CONV
object when a P25 transmission occurs.
Warranty
07A08
GE-08D-0550
Printed in China
Page 83