[ICOM] Radio Shack 20-049 Programming Cable

[Gary]

Jim,
Your schematic is a bit odd. Did you actually cut open your cable to come up with the
conductor colors and the shield connection? Connecting the shield to pin 2 (data
receive) of the serial connector is very unusual. Usually the shield would be
connected to pin 5 (ground). I rung out mine without cutting the molded cable open and
found that the cable appears to be straight through with only data transmit (serial
pin 3) passing all the way through to the phone plug along with serial pin 5 (ground).
As shown in your drawing there appear to be no flow control jumpers on the serial
side. I don't see how this could be used for any Icom application at this time.
Gary

jpk5lad at cox.net wrote:

> Mac - K2GKK/5 suggested I upload the 20-249 schematic to my web site so here 'tis:
>
> http://www.hayseed.net/~jpk5lad/download/Radio%20Shack%2020-049%20cable.JPG
>  or if it splits the URL try:
>
> http://tinyurl.com/3xg5zo
>
> 73,
> Jim - K5LAD
> > --
> > ===========================
> > http://www.hayseed.net/~jpk5lad/
>
> > ----- Original Message -----
> > From: <jpk5lad at cox.net>
> > To: "ICOM Reflector" <icom at mailman.qth.net>
> > Sent: Friday, June 01, 2007 6:57 PM
> > Subject: [ICOM] Radio Shack 20-049 Programming Cable
> >
> >
> > This cable, 20-049, is for some of their scanners and I've not been able to
> > use it for any CI-V applications.  Several weeks ago I "wrung out" the
> > schematic of the 20-049 and I've offered it via private email to several
> > members on the reflector but I haven't heard back from any of them.  I
> > thought this might be helpful but evidently nobody wants or needs it.
> > Anyway, I do have a schematic of only the RS 20-049 cable if somebody does
> > need it.
> >
> > 73,
> > Jim - K5LAD
> >
> > --
> > ===========================
> > http://www.hayseed.net/~jpk5lad/
> >
>
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