Preamble Length |
(Conventional System, General ASTRO) |
Selects the amount of time that determines the minimum number of bit
sync preamble packets that are sent at the beginning of all ASTRO transmissions. These packets
allow transmitting and receiving radios to synchronize with each other
prior to an ASTRO Systems transmission. 
The amount of time is equal to this Preamble Length setting multiplied
by 0.2083 milliseconds (ms). This
selection applies while operating on the current ASTRO Conventional
System.
|
When the Secure Operation field is set to "Hardware" or "Advanced Digital Privacy (ADP)", the radio transmits a minimum of 50 milliseconds of preamble due to the delays encountered when encrypting the data stream. |
When the System Type field is set to "ASTRO" or "DVRS".
Minimum |
Maximum |
0 |
1275 |
