[Trlog] CI-V interface for 756PROII and voltage

Josep ea6bf at arrl.net
Wed Dec 20 04:14:40 EST 2006

Hi all,

I have recently bought a G4ZLP CI-V interface that I received today. I have 
tryed with my 756PRO2 with same baud rate in PC and radio and address 
converted to decimal (64h = 100), thank´s to you guys. But.....it doesn´t 
works...! I have noted that the voltage at 3.5mm mono jack is at 0.656V, and 
negative (shield) is at center connector and positive at other side. I 
normally do possitive at center and shield at the side, but maybe this is 
the way here. I builded an interface some weeks ago without success, also 
the voltage showed in the jack was less that 1V. I am using an old PC here, 
but it is supposed to work, I use it for contests and some logging, but yes, 
I haven´t use the SERIAL port, but this PC has worked with CAT at EA6IB last 
year and worked.....Any suggestions, measurements, tips, etc...are 
welcome..! I´ll keep on trying, do not give up..!


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