[ICOM] Warning about W1GEE interface cables

[Julio]

Could the radio's CI-V port been damaged along with the W1GEE interface when
his station was struck by lightening?

Julio,W4HY
----- Original Message ----- 
From: "Dave Bernstein" <aa6yq at ambersoft.com>
To: "'ICOM Reflector'" <icom at mailman.qth.net>
Sent: Tuesday, June 01, 2004 9:29 PM
Subject: RE: [ICOM] Warning about W1GEE interface cables


> Since the transceiver side of the interface is a simple TTL
> open-collector bus, it is indeed challenging to guess what the W1GEE
> circuit must be doing to reliably fail with two specific transceiver
> models. Anyone have a W1GEE schematic?
>
> Sorry to hear about the lightening damage, Floyd...
>
>    73,
>
>        Dave, AA6YQ
>
>
> -----Original Message-----
> From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
> On Behalf Of Ed Parish K1EP
> Sent: Tuesday, June 01, 2004 20:57
> To: ICOM Reflector
> Subject: Re: [ICOM] Warning about W1GEE interface cables
>
>
> At 6/1/2004 08:45 PM, you wrote:
> >Today I received a new W1GEE Interface cable (model LCU3-I) to replace
> >one that got zapped in a recent lightning strike.  I first tested it
> >with my 765 and then with the 781 and it worked with neither.  After
> >querying the manufacturer, I was told that they were aware that their 9
>
> >pin cables would not work with the 781.  This in spite of the fact that
>
> >the paperwork that comes with the interface clearly pictures the 9 pine
>
> >cable and states that it will work with the 765 and 781.  A reasonable
> >person might wonder which of the other dozens of Icoms listed also will
>
> >not work with the cable.
>
> I know nothing of W1GEE or his interfaces.  However, I have built a
> number of interfaces of different types.  The radio end of the
> interface, the CI-V interface, should be identical for any Icom radio.
> That is the CI-V standard.  The interface, whether it is a CT-17 or one
> you build, is a just level translator.  It takes the positive voltage
> swing of the open collector CI-V line and translates it to the bipolar
> swing of an RS-232 serial line.  Some are self powered, in that they
> derive power from the computer RS-232 port.  Although there is an RS-232
> standard, no two serial ports are identical.  We won't go down that
> engineering road, but sometimes your computer won't supply the necessary
> voltage to self power the interface or it requires a full +/-12 or more
> volt swing on the signals.  I don't understand how the 781 or 765 CI-V
> interface is different than other Icom CI-V interfaces.
>
> >While I've been satisfied with the W1GEE cables in the past, I strongly
>
> >recommend that anyone looking for a PC interface for their Icom look
> >elsewhere - there are plenty of alternatives on the market.
> >
> >73, Floyd - K8AC
> >
> >
> >----
> >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/
>
> ----
> 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/
>