For the Alinco DX 77 radio, we made a simple interface and a program N1MM knows this type TCVR, nakonfigurovali sme rádio do programu, napr. na COM port 1 aj s kľúčovaním a ovládaním rádia z jedného portu a všetko funguje, čiže pomocou PC je možné ovládať TCVR a v zadanom conteste kľúčovať rádio v CW móde pomocou klávesnice – F1, F2 atď.
A stereo 3.5 connector is used for the radio (in the diagram it is mono and if the signals are brought to the tip, it will not work), and therefore it is necessary to connect the stereo connector and the RD data and TD data signals together to the stereo connector, but between the ground and the tip. Instead of transistors for keying, we used an optocoupler and the power supply is from ext. source.
Potom je potrebné v contestovom programe N1MM nakonfigurovať príslušný COM port, baudrate je 9600 a z COM portu je súčasne aj kľúčovanie TCVR z makier N1MM.
I remind you that in other programs, such as MixW, HRD and others, we did not try it, because if they do not have the specified type of radio in the selection, it is probably necessary to try e.g. type TCVR ICOM and in the HRD program enter the COM port that is known, the speed and the others enter autodetect. But we were interested in connecting the Alinco DX 77 in N1MM, as this program knows the mentioned type of radio, and we succeeded.
Best regards
Milan – OM3TPN