[Elecraft] [SteppIR] K3 -> SteppIR communication

[Joe Subich, W4TV]

Jim, 

The SteppIR transceiver interface board accepts receive data 
(RS-232 format) on pin 2, converts it to TTL on pin 7 (TTL Out) 
which is then connected to pin 9 (Icom In).  If you are seeing 
CAT data on other RS-232 devices attached to the Y cable but 
the SteppIR is not decoding data, the most likely suspect is 
the RS-232 to TTL conversion in the transceiver interface. 

If you have an Icom CT-17, connect its RS-232 port to the 
SteppIR "Y" cable (Pin 2 input) and connect the tip of the 
1/8" jack (CI-V output) to pin 9, shell to pin 5 of the 
SteppIR controller.  You should be able to monitor incoming 
data (with the SteppIR controller configured for Kenwood at 
the proper data rate) if the basic transceiver interface 
board is working.  
 
Alternatively, you have another device that provides CI-V 
output ... connect the CI-V output as described above (tip 
to pin 9, shell to pin 5) and configure the controller for 
Icom protocol.  These steps will tell you if the problem 
is in the RS-232 to TTL conversion part of the SteppIR 
transceiver interface board (or in the UART portion).  
In either case, the transceiver interface board (the small 
board with the two DB9 connectors) will need to be replaced. 

73, 

   ... Joe, W4TV 
 


> -----Original Message-----
> From: SteppIR at yahoogroups.com 
> [mailto:SteppIR at yahoogroups.com] On Behalf Of Jim Spears
> Sent: Tuesday, February 10, 2009 9:56 AM
> To: elecraft at mailman.qth.net; SteppIR at yahoogroups.com
> Cc: 'Jerry Keller (K3BZ)'; 'JohnK1JD'; 'Dick Dievendorff'
> Subject: [SteppIR] K3 -> SteppIR communication
> 
> 
> Thanks to all who have chimed in with suggestions.  At this 
> point the setup is as follows:
> 
>  
> 
> K3 at any of 4800, 9600, 19200, 38400 bps
> 
> K3 with CONFIG:  AUTOINF = "AUTO 1" or "norm"
> 
> SteppIR set to "KENW" mode, LED 6 set when Select is held for 
> 2 or 3 seconds
> 
> SteppIR Y cable connecting K3 to PC serial port with other 
> leg of Y going to SteppIR Data In port
> 
> Ham Radio Deluxe software running
> 
>  
> 
> HRD will connect to K3 and follow frequency, band, and mode 
> changes at any data rate
> 
>  
> 
> SteppIR will not follow K3 at any data rate
> 
>  
> 
> RS232 tester shows RTS (pin 7) set all the time as is 
> expected with cable wiring
> 
> Also shows RD (pin 2) data present as K3 frequency and band change
> 
>  
> 
> I suppose I could feed the Y cable leg into a terminal 
> program and verify the data coming into the SteppIR
> 
>  
> 
> Right now it looks to me that the interface board on the 
> SteppIR controller is the culprit.  Any suggestions?
> 
>  
> 
> Jim Spears
> 
> N1NK
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
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