CAT INTERFACE and CW KEY for similar work YAESU
	   transceiver and LOG-EQF software or other soft.
	   ===============================================


							     CAT
	COM 1-4		    -----------------------------------o
	25 PIN		   / K			     Serial IN 3
	       10K     B |/
	o-----/\/\/\-----|	NPN
	2 TD		 |\
			   \
	7 GND		   | E
	o------------------o---------------------o-------------o
			   | E			 |         GND 1
			    \			 |
	4 RTS		     \|         10K      |
	o--/\/\/\--	NPN   |--------/\/\/\----->------------o
	     2K	  |	     /| B                |  Serial OUT 2
	3 RD	  |	    /			 |
	o---------o--------- K		 ---------
					/E
	20 DTR 	     5K		    B |/
	o-----------/\/\/\------------|    NPN
				      |\
					\K	         CW KEY
					 ---------------|=====o


	
	Transceivers FT-840, FT-890, FT-900, FT-990, FT-1000

	Software N6TR-LOG, K1EA-LOG, Soft990 , FT-manager etc.