[ICOM] Question about the CT-17 Level Converter

[Dave Bernstein]

"every now and then one gets zapped" could well be because the Max232's
TTL output is not designed to drive an open collector bus, which is what
CI-V is. Next time you build one, use a 7407 section between the
Max232's pin 12 and the CI-V bus..

    73,

         Dave, AA6YQ

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
On Behalf Of K4RO Kirk Pickering
Sent: Saturday, June 05, 2004 13:44
To: ICOM Reflector
Subject: Re: [ICOM] Question about the CT-17 Level Converter


Yup.  I've built four or five of them in the last 10 years. Every now
and then one gets zapped, or I give one to a budding contest operator.
Here's a diagram a friend sketched for me:

http://www.k4ro.net/tcg/image/ct17.jpeg

73

-Kirk  K4RO               http://www.k4ro.net


On Fri, Jun 04, 2004 at 11:02:15PM -0700, Larry wrote:
>  To see what the true cost could be, I abandoned my junk
> box & bought all new parts - and I mean ALL new parts. 
> The cost was $13 & I know that the price of the MAX232i
> has dropped considerably.
----
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/