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Setup procedures—Part 1

5-8 HF SSB transceiver reference manual

The maximum setting of the sounding signal length is 100

seconds.

Bit Error Rate (BER) Threshold (ALE option 5)

This ALE option sets the value of the BER Threshold used

in BER testing.

You can set a value in the range 0–48.

BER testing is a method of error detection for ALE word

transmission. ALE stations send and receive ALE link

controlling information in blocks of data called ALE words.

An ALE word consists of a 3-bit preamble and a 21-bit data

field.

The result of BER error testing is used in the process of

determining whether or not the ALE link can be established

using the selected channel.

The higher the BER value of a transmitted ALE word, the

greater the error. A BER value of 0 indicates perfect

reception of an ALE word. The maximum BER value of 48

indicates that all bits of the ALE word were bad.

If a received ALE word contains more errors than the BER

Threshold, the ALE controller rejects the word. The lower

you set the BER Threshold, the greater the likelihood of

rejecting words with errors.

Golay Threshold (ALE option 6)

This ALE option sets the value of the Golay Threshold used

in Golay testing.

You can set a value in the range 0–4.

Golay testing is an additional method of error detection for

ALE word transmission. The result of Golay error testing is

used in the process of determining whether or not the ALE

link can be established using the selected channel.