[aprssig] GPS to D700 Connection

w2pi at optonline.net w2pi at optonline.net
Fri Sep 9 13:47:12 CDT 2005

As to the last question ... Yes - the D7 manual with respect to the GPS cable wiring...

Paul, W2PI

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Could someone sort out a technical detail for me. I am attaching a GPS35-HV to a Kenwood D700A. The GPS35 has a cigar lighter power connector and a DB9 RS232 connector as standard equipment. 

The diagram in the D700A Specialized Communications Instruction Manual has a diagram on page 10 which shows the 3 conductor plug with pigtail to GPS wiring. I want to make up a DB9 connector on the end of the plug's pigtail. The diagram says the white lead goes to the GPS DATA IN, the red lead goes to the GPS DATA OUT  and the shield goes to GPS GND. I understand that the three pins on the DB9 I need to  connect to are 2, 3 and 5. Shield goes to 5. Which pigtail lead goes to 2 and which goes to 3. Pin 2 is normally called RXD and pin 3 is normally called TXD. I am always confused by this. Just tell me red => 2, white => 3 or whatever. I am not smart enough to go beyond that.

On another note:
Is there any technical manual that is more confusing then the D700A manuals.

Any enlightenment will be appreciated.


Victor Fraenckel - The Windman         
victorf ATSIGN windreader DOT com
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