Codan 2110 series User Manual

The Control List
246 Manpack Transceiver 2110 series Reference Manual
ALE LQA Decay
When your transceiver periodically records the quality of the channels in your network,
it stores the results for future use. Several factors can affect the accuracy of these results
including:
• an insufficient number of ALE sounding transmissions being made in your network
• an insufficient number of ALE calls being made (which prevents the transceiver
from exchanging channel quality information with other transceivers)
• stations moving their location
• antenna loading, nearby physical structures, and local noise for stations mounted in
vehicles
These factors can lead to the deterioration of good channels going unnoticed. To avoid
this, use the ALE LQA Decay entry to artificially decay channel quality information
over time. This forces the transceiver to continually work against the artificial decay to
maintain an accurate picture of channel quality that does not overestimate actual
conditions.
For mobile stations the recommended decay period is 1 to 4 days. For base stations the
recommended decay period is 15 to 30 days.
If you do not want to use this feature, select Disabled.
ALE LQA Exchange
If you want the transceiver to send and receive LQA information to and from other
stations during calls, set the ALE LQA Exchange entry to On.
If the ALE LQA Exchange entry in your transceiver is set to Off, it does not request
LQA information from other stations. Your transceiver receives any LQA information
sent from the other station.
ALE LQA Mapping
The ALE LQA Mapping entry determines the method by which the LQA information is
stored within the transceiver, that is, according to frequency or channel name.
NOTE
When the ALE LQA Exchange entry is set to On, it increases the length
of time it takes to establish a call by approximately 4 seconds for every
10 channels on which the call is tried.
NOTE
LQA information is always exchanged during a Channel Test call in an
ALE/CALM network (MIL-STD-188-141B ALE option, 2110 only),
regardless of the setting in the ALE LQA Exchange entry.
NOTE
Exchange of LQA information may affect interoperability with non-
Codan HF transceivers. If interoperability is affected, set the ALE LQA
Exchange entry to Off.

Codan 2110 series Specifications

General

Brand	Codan
Model	2110 series
Category	Transceiver
Language	English