========================================================= SIMPLEX by Gabriel F6DQM ========================================================= SIMPLEX is a program which manages a simplex or duplex repeater. It requires Win95 or later, 16 Mb of RAM and a sound card. In Simplex mode, the repeater uses the same receive and transmit frequency. It records and replays alternatly the received signals. This mode allows anybody who possesses a single transceiver to transform its station into a repeater. The station will be able to repeat packet frames without the need of a TNC. Your friends will be able to perform modulation and decommutation testing through your station while your are doing some gardening. Any modulation may be recorded (SSB, FM, Packet, SSTV, PSK31 etc). Friends who cannot access a duplex repeater will be able to contact some more correspondants through your station. In Duplex mode, the program acts just like a classical duplex repeater or transponder with tone opening, chat timer, beacon message etc. The program may replace a hardware repeater logic. The duplex repeater mode requires separate receiver and transceiver working on different frequencies in the same band. The duplex transponder mode requires two differents transceivers working on two different bands. A more detailled description will be found in the chapters Simplex Mode, Duplex Repeater Mode and Duplex Transponder Mode. Whatever the chosen mode, SIMPLEX is sensitive either to audio signals or radio signal to initiate the record process. A radio signal is for example a squelch DC signal sent by your transceiver which goes high when carrier is received by the receiver and resets low when the frequency is clear. In the later case, record will start on carrier detection just like a hardware repeater. SIMPLEX may be used with CW, SSB, FM, SSTV or any other modulation mode. SIMPLEX allows you also to play up to 11 different audio wave messages, 6 of which being looped if desired. This will provide an efficient help to contesters as a parrot. It is an intelligent parrot. Please read carefully the help file SIMPLEX_EN.HLP before starting with SIMPLEX. Connections between your home computer and your transceiver are described in the help. You will also find detailed schemes of the connection between the COM port and the PTT line of your transmitter in the joined file called PC_TX.BMP. Three examples are proposed : simplex repeater, duplex repeater, duplex transponder. VERY IMPORTANT : While running this program under VISTA, WIN7, 8, 10 from a sub-directory under the directory Program Files, you will have to start this program as administrator anyway for getting full access to all functions of it, especially the recording of text files, image files, sound files. If you don’t do that, the produced files won’t be accessible because of the UserAccountControl (UAC) of Windows. If you don’t want to run the program as admin, you have to install it in a sub-directory which is NOT under C:\Program Files, but anyw