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BARRETT 4050 HF SDR TRANSCEIVER - OPERATING AND INSTALLATION MANUAL
ALE
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operation of HF networks by automating many of the procedures necessary to
establish and maintain an HF link.
The ALE controller option provides complete inter-operability as required by
FED-STD-1045 and U.S. MIL-STD-188-141C standards.
HF network stations equipped with ALE controllers automatically scan a
pre-selected set of channels, listening for ALE calls.
If sounding is selected, stations will send out sounding calls to other stations at
periodic intervals. These signals are analysed for link quality and stored in the
sounded stations. All stations gradually build up a table of parameters which
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tables are used by the ALE controller to determine the best channel to connect
on when commanded by its Operator to communicate with another station.
The ALE controller’s memory stores up to 8,000 sets of LQA information, 100
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(self-address and other address). Plus, it has the ability to save unknown
station information in an Auto Fill queue. This allows new stations to join the
ALE network without having to manually re-program the network settings of
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addresses.
ALE Set-up Overview
The ALE network parameters are determined by a network supervisor. The net-
work supervisor programs all the Transceivers in the network with the required
addressing and channel information using the Barrett 4050 HF SDR Program-
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The Barrett 4050 HF SDR Programming software (P/N BCA40001) is used to
transfer pre-determined network information to each Transceiver.
As ALE’s prime purpose is to automate many of the procedures necessary to
establish and maintain an HF link, it is only necessary for the Operator to enter
the desired station to call and activate the ALE call sequence as described in
this section.
Various operational parameters can be changed within the protected menu
ALE section as required by the Operator. The ALE Settings section on page 101
describes these functions.
Summary of Contents for 4050 HF SDR
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