[net.ham-radio] FT757 and RS232

brucec@iddic.UUCP (Bruce W. Cheney) (02/27/85)

The FT757 has an optional RS232 interface that I'm interested
in.  Therefore the following questions:

1) Does anybody in netland have it ?

2) If so, could you describe its capabilities and how you
   are using it.

3) If you don't have it, but have more info on it, please let
   me know.

regards
NI7M   tektronix!iddic!brucec

sullivan@acf4.UUCP (David J. Sullivan) (03/05/85)

And speaking of RS232 Interfaces, does anyone have the one for the ICOM
R71-A receiver?  Or specs?  My Macintosh is waiting...


David Sullivan
New York University
sullivan@nyu.ARPA
...!ihnp4!cmcl2!sullivan

ERWINVL.DLOS@XEROX.ARPA (03/07/85)

BRUCE,

I HAVE A 757 THAT I HAVE BEEN "TALKING" TO VIA MY XEROX 820-II COMPUTER
FOR SOME TIME NOW. I DESIGNED MY OWN INTERFACE USING A MOTOROLA MC1489
AND A
RAT SHACK OPTICAL ISOLATOR. I OUTPUT FROM THE 820-II COMM PORT (RS232)
TO 
THE HOME BREW INTERFACE THEN INTO THE RICE BOX. WORKS GOOD BUT I AM NOT
COMPLETELY SATISFIED WITH THE SOFTWARE I GENERATED TO HANDLE ALL THE
OPERATING FUNCTIONS OF THE 757. IT IS NOT WHAT THE AVERAGE BEAR WOULD
TERM AS BEING "USER
FRIENDLY". THEREFORE, I AM IN THE PROCESS OF REWRITING.

AS FAR AS ACTUAL PWA FROM YAESU, I HAVE NEVER INQUIRED.


			REGARDS,

                         W5PUT--VAL L. ERWIN

dirk@hp-pcd.UUCP (dirk) (03/15/85)

I have a FT757 and I didn't buy the RS232 interface.  The interface is only
a level translator and can be replaced by a diode, transistor, and a
resistor.  I have made such a thing and it works very well.(see one of
the later issues of 73 for a circuit) The commands that you use to talk 
to the interface are all explained in a book, that should have come with
the interface called "Technical Supplement".  If it didn't come with the
radio you can get one from yeasu for $5.00 and a copy of your sales slip.
If you have lost the sales slip then it will cost you $15.00.  This book
also includes schmetics, parts list, board layout, and calibration infor-
mation.  Hope this was some help.

		73s   Dirk   KD7UB