[Elecraft] Need more than one serial port?

[Joe Subich, W4TV]

> 
> It only has a 2 wire connection to the SteppIR controller. 
> This is the scheme I'm planning on trying when the SteppIR 
> goes back up.
> 
> Am I barking up the wrong tower?

Not at all.  Exchange the DB9F ("computer") and DB9M ("radio") 
and it will be easier.  The SteppIR controller will connect to 
the K3 via the long 2-wire connection and the short leg will 
be set up as a connection point for a standard serial cable 
from the computer, USB to serial converter, or the CAT cable 
from a microHAM Interface.  

Just remember to set the K3 "AutoInf=On" so the SteppIR gets 
the necessary frequency data when a logging program is not 
polling. 

73, 

   ... Joe, W4TV 
 




> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike
> Sent: Saturday, October 10, 2009 12:51 PM
> To: el >> "elecraft at mailman.qth.net"
> Subject: Re: [Elecraft] Need more than one serial port?
> 
> 
> Julian, G4ILO wrote:
> > Paul-30 wrote:
> >   
> >> So, how are you contesters out there doing that? Is there 
> a Y cable 
> >> made for DB-9? If so, wouldn't that pin out be different 
> than the one 
> >> for the SteppIR and cause problems?
> >>
> >>     
> >
> > You can't connect two cables to one serial port. The SteppIR 
> > controller has two serial ports called Data In and Data Out. You 
> > connect Data In to the K3 using a special SteppIR cable. 
> You connect 
> > Data Out to the computer using a standard serial cable, or USB to 
> > Serial adapter.
> >
> > 
> http://www.steppir.com/files/Transceiver%20Interface%20Operation%205-2
> > 8-09.pdf
> There is also a schematic on the Steppir Yahoo group site 
> http://groups.yahoo.com/group/SteppIR/files/ titled Y-cable.pdf and 
> stamped by Fluid Motion that indicates that you can indeed Y 
> the serial 
> hoookup.
> Of course, you'll have to wire your own DB-9(s).
> 
> It only has a 2 wire connection to the SteppIR controller. 
> This is the 
> scheme I'm planning on trying when the SteppIR goes back up.
> 
> Am I barking up the wrong tower?
> 
> 73, Mike NF4L 
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