[ICOM] Radio Shack 20-049 Programming Cable

[Kamar]

Think the price for the CT is way out of bed, check the price for their
mobile whip antenna (nine footer) that is essentially a CB whip antenna.


Ron / NU1U 

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Larry Winslow
Sent: June 02, 2007 01:01
To: ICOM Reflector
Subject: Re: [ICOM] Radio Shack 20-049 Programming Cable

For those who want to it the Icom way, I have the schematic for the CT-17
which I can send to those who are interested. The last time I built it, the
cost was $11 - using all new parts.

I can't believe the price that Icom wants for such a simple device.

73 - Larry WØNFU
larry_w at comcast.net

At 09:37 PM 6/1/2007, you wrote:

>Jay hit the nail on the head. Many radios & scanners require TTL level 
>serial data so a converter is needed. Many converters are available to 
>buy or build, some may work better than others or work on a wider 
>variety of gear but the
>20-049 cable is simply a RS-232 straight through, one-way (transmit 
>only) cable. Here's a direct link to the page Jay wrote about;
> 
>http://www.starrsoft.com/software/Win96/Cables/cables.html##buildityour
>selfcables
>
>At many hamventions I visit I find a deal on some sort of programming 
>cable with a built in RS232-to-TTL converter. Many that I have found 
>are virtually the same inside except for the device cable so all I need 
>to do is carefully open up the DB-9 backshell, unsolder the original 
>cable, identify the communication connections (usually a common or 
>ground and a data line), then install my own cable be it a phone plug, 
>modular telecom plug, or other connector. This has worked for me many 
>times. Since this is an Icom reflector I'll share one other tip I've 
>found, most of the Icom serial programming cables I've found have the 
>same board in the backshell but a different device cable.
>If I find a deal on any Icom programming cable I usually get it 
>regardless of what cable may be on it because I can easily change it out.
>Gary
>
>AD5PE wrote:
>
> > It's a TTL converter, but of an inferior design.  Go to 
> > www.starrsoft.com and look for the link to "cables" - links to 
> > several commercials, a couple of good home brew designs, and a 
> > detailed explanation of why this one sometimes doesn't work (hint - 
> > whoever designed it made some assumptions about comm port voltage 
> > levels that are common (on desktops) but not "standard" (so it won't 
> > work with most laptops, some desktops and the vast majority of
USB-serial converters.
> >
> > Jay
> > AD5PE
>
>----
>Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net Icom 
>Users Net: Sundays, 1700Z, 14.316 MHz Icom FAQ: 
>http://www.qsl.net/icom/

----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net Icom Users
Net: Sundays, 1700Z, 14.316 MHz Icom FAQ: http://www.qsl.net/icom/