Browse Prior Art Database

MULTI SPLIT-SITE ALE SYSTEM (MSS-ALE)

IP.com Disclosure Number: IPCOM000006730D
Original Publication Date: 1993-Mar-01
Included in the Prior Art Database: 2002-Jan-28
Document File: 2 page(s) / 89K

Publishing Venue

Motorola

Related People

Moti Berenzon: AUTHOR [+2]

Abstract

The ALE (Automatic Link Establishment) feature has recently become one of the most important features of modem HF-SSB radios and has in fact become "a must" for large HF communications systems.

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MO7WROLA INC. Technical Developments Volume 18 March 1993

MULTI SPLIT-SITE ALE SYSTEM (MSS-ALE)

by Moti Berenzon and Joe Bareli

GENERAL

  The ALE (Automatic Link Establishment) feature has recently become one of the most important features of modem HF-SSB radios and has in fact become "a must" for large HF communications systems.

of three sites (refer to Figure 1):

1. Transmitters Site: The transmitter is a computer- controlled HF-SSB transmitter. No add-ons are required for the MSS-ALE-which keeps the system cost low.

  ALE-equipped radios select automatically an opti- mal frequency for operation and so eliminate the need for "HF expert" operators for the HF link.

2. Receivers Sire: The receiver is a computer-controlled HF-SSB receiver. Here, too, no add-ons are required for the MSS-ALE.

  Large HF systems usually employ a large number of radios at a single station. To eliminate co-site interfer- ence, split-site configuration is used. The split-site sta- tion is based on receivers located at one site and trans- mitters located at a second site, while system control and operation are performed from a third site.

3. Gwmol and Operation Sire: The split-site radio is oper- ated from this site. Each, operator has a computer to control the radio. The transmitter and receiver are connected to a unit designated HLC (HF Link Con- troller). The HLC provides the interface between the HF radio and the operator's computer. The HLC also includes the ALE modul,e which performs automatic HF link establishment.

  In the past, it was not possible to integrate the ALE function in a split-site system because of the extensive handshake required from the receiver and the transmit- ter operating in ALE mode.

Two configurations are available:

MSS-ALE-EXPLANATION OF TERM

M -Multi: indicates that many radios are u...