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AOR AR-7030 Computer Remote Control Protocol Manual

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    Page 1 AR-7030 Computer remote control protocol. Information for firmware releases 1.1A, 1.2A, 1.4A and 1.4B 1) Remote control overview. The AR-7303 receiver allows remote control of all of its functions by means of a direct memory access system. A controlling computer can read and modify the internal memory maps of the receiver to set required param- eters and then call for the receiver’s control program to process the new settings. Commands to the receiver are byte structured in binary format, so it is...
    Page 2 5) Variations between A and B types and firmware revisions. Type A firmware supports only basic receiver functions, type B extends operations and includes support for the Notch / Noise Blanker option. The whole of the type A memory map is retained in type B, but more memory and operations are added for the extended functions of type B. In the following information, circled note numbers are included to indicate where items are specific to one type or revision of the firmware:- ŒApplicable to type B...
    Page 3 Front panel spin-wheels logged but not actioned. Display update (frequency & S-meter) continues. Level 2 As level 1, but display update suspended. In revisions before 1.4 squelch operation is inhibited, which results in no audio output after a mode change. In revision 1.4 squelch operation continues and mode changing is as expected. Level 3 Remote operation exclusively. Lock level 1 is recommended during any multi-byte reads or writes of the receiver’s memory to prevent data contention between internal...
    Page 4 13 0D ph_cal 1 byte Sync detector phase cal value 14 0E pd_slp 1 byte Timer run / sleep time in minutes 15 0F pd_dly 1 byte Scan delay value x 0.125 seconds 16 10 pd_sst 1 byte Scan start channel 17 11 pd_ssp 1 byte Scan stop channel 18 12 pd_stp 2 bytes Channel step size 20 14 pd_sql 1 byte Squelch 21 15 pd_ifg 1 byte IF gain 22 16 pd_flg 1 byte Flags (from pdflgs) 23 17 pd_frq 3 bytes Frequency 26 1A pd_mod Ž1 byte Mode (bits 0-3) and NB threshold (bits 4-7) 27 1B pd_vol Ž1 byte Volume (bits 0-5) and...
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