That darn connector! Thanks a ton Barry for replying off list to help with my confusion. I still have some minor questions for the group:
Pin 3: Clone > CPU and Pin 9: OPTV > CPU What are they for in plain English? Also (and yeah, I'm missing something very basic here): Is pin 2 the PTT? Grounding this pin TRANSMITS? Thanks to all! Gene 73 de NAØG "Barry A. Wilson" <[EMAIL PROTECTED]> wrote: > > Vajak, > > > > Using the ICOM Data cable you can connect the ICOM 92AD to a computer > but the discussion here has been having an ICOM connector for the radio > capable to connect the data connection, microphone, and speaker at the same > time. ICOM did not wire all nine pins in their data cable! > > > > So what I was trying to indicate there is a DB9 Standard for Computers > that standard is not the same as the pin out for the connector on the radio. > RS-232 standards(EIA-232) are defined by EIA/TIA (Electronic Industries > Alliance /Telecommunications Industry Association). RS-232 defines both the > physical and electrical characteristics of the interface. The ICOM pin out > does not meet the standard. I was not saying there are not RS232 signals > available just that if you wire all the pins on the ICOM connector to a DB9 > Serial Connector you're going to have problems and most likely damage the > radio. Is this an erroneous statement? > > > > RS-232 DB9 Pin Signal ICOM Chassis 12 Pin > > 1 DCD In Data Carrier Detect 1 Microphone > > 2 RxD In Receive Data 2 +5v > > 3 TxD Out Transmit Data 3 Clone à CPU > > 4 DTR Out Data Terminal Ready 4 RS232C RX232 > > 5 GND - Ground 5 RS232C TX232 > > 6 DSR In Data Set Ready 6 Ground > > 7 RTS Out Request To Send 7 Speaker > > 8 CTS In Clear To Send 8 Ground > > 9 RI In Ring Indicator 9 OPTV à CPU > > 10 NC > > 11 NC > > 12 NC > > > > I yield to those that understand this better than I do but I am not going > to wire a connector pin for pin on my radio to the RS232 Standard DB9 and > plug it into a computer until someone else proves it won't damage a radio. > See the attached chassis pin out for the ICOM radio and the DB9 Standard! > > > > 73 > > > > Barry > > KA0BBQ
