SCS/ALE controller (2G MIL 188-141 ALE) supports two modes: ALE/PACTOR, see the video below, and full stand alone ALE. In ALE/PACTOR existing PACTOR software needs to know nothing about ALE. The PACTOR Connect request is turned into an ALE Linking Call, which if should fail, results in the modem telling the PACTOR software that the PACTOR Connect failed. If the ALE Link is achieved then the PACTOR Connect process proceeds. After the PACTOR is complete, the ALE Link is cleared and ALE Scanning resumes. Thus no modification of existing PACTOR software is required for an ALE front end operation. The Bluetooth option must be installed to have full ALE operational awareness when in ALE/PACTOR mode.
In stand alone ALE one can use PACTOR or AMD messaging or any external modem where the DR-7800 series modems provide an external modem sense PTT line to reset the ALE Link timeout. The MS110A hardware or MS-DMT software modems can be used. To use PACTOR the Bluetooth option is required.
In addition many additional HF transceiver used in MARS and SHARES have been added from reuse of source code from the MARS-ALE Radio Control Library where simple split VFO is being applied where needed for ALE Quiet Scanning and dropping out of split for TX. The use of PA relay bypass commands where applicable. No other external ALE controller on the market takes these steps.
Thanks to my friend Steve Hajducek from "MIL-STD tools for MARS Multimedia Library" group:
https://www.facebook.com/groups/MARS.MIL.STD.TOOLS.LIB
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