Automatic Link Establishment - ALE - option
Installation
...............................76
ALE system overview..............................................................................................76
Operation overview.................................................................................................76
Commence ALE scanning ......................................................................................77
Receiving an ALE call directed to your transceiver .................................................78
Calling another ALE station ....................................................................................79
Making an telephone call via an ALE equipped Barrett 960 telephone
Closing an ALE link.................................................................................................85
ALE menus .............................................................................................................86
ALE default .............................................................................................87
Sounding ................................................................................................87
Link quality decay time............................................................................88
Sounding Signal Length..........................................................................89
Bit Error Rate (BER) threshold................................................................90
Golay threshold.......................................................................................90
Bad word count.......................................................................................91
Call Retry Limit .......................................................................................91
LQA averaging.......................................................................................92
ALE silent mode......................................................................................93
ALE fill mode...........................................................................................94
ALE disable.............................................................................................94
...................................................................................................................95
General...................................................................................................................95
Introduction .............................................................................................95
Unpacking and inspection.......................................................................95
Fixed station installations........................................................................................96
Transceiver position ................................................................................96
Operating convenience ...........................................................................96
Air circulation ..........................................................................................96
Proximity of transceiver to antenna.........................................................96
Power supply ..........................................................................................96
Voltage drop............................................................................................97
Protection fuse........................................................................................97
Antenna ..................................................................................................97
912 Single Wire Broadband Dipoles .......................................................98
912 Multiwire Broadband Dipoles ...........................................................100
913 series helical dipoles........................................................................102
915 wire dipole........................................................................................104
Barrett 911 Automatic Antenna Tuner for base station installations ........106
Mobile installations .................................................................................................108
Transceiver position ................................................................................108
Safety .....................................................................................................108
Convenience...........................................................................................108
Strength ..................................................................................................108
Air circulation ..........................................................................................108
Obstruction .............................................................................................109
Power wiring ...........................................................................................109
Antenna ..................................................................................................110
Antenna mounting...................................................................................110
Antenna feed cables ...............................................................................110
Voltage standing wave ratio (VSWR) ......................................................110
Noise suppression ..................................................................................111
Interference suppression kit....................................................................111
interconnect ...........................................................................................................82
BARRETT 950 HF TRANSCEIVER
PAGE 4
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