[Ham-Mac] Need Ideas on USB-Serial Problems

[Jack Brindle]

This is a shot in the dark, and may sound dumb, but...

Are you sure you are using the right cables? They might work great  
with a modem, but maybe they need to be straight through?

This really sounds like a problem between the serial adapter and the  
radio(s).


On Dec 15, 2007, at 2:56 PM, Steve Muncy wrote:

> Hi, David....
>
> Unfortunately I don't have a RS-232 test dongle, but I'm darn sure  
> thinking about acquiring one now!!!
>
> I tried using a Belkin USB hub last year and gave up in disgust. The  
> Keyspan converters just didn't like it, so I started plugging in the  
> converters to the back of the  iMac last year and they worked  
> perfectly until this latest switchover. I'm thrilled to know that  
> Don Agro has had some good experiences with recent ones, however,  
> and will give those a try after (if) I get this system working again.
>
> I've received a few comments direct that indicate some people may  
> have been confused over some aspects of my problem, so I'll summarize:
>
> - I don't blame the software since I know it works;
> - I don't blame Leopard because this doesn't work using 10.3.9 on  
> another system;
> - I don't blame the cables because they work fine with my TNC;
> - I don't blame the Keyspan converters because all three of them  
> work with the TNC;
> - I don't blame the iMac since I now have the same problem on a  
> PowerBook.
>
> The only thing that seems common to everthing is the Keyspan  
> drivers, but I don't think I can blame them because others are using  
> them successfully in the same configurations as mine.
>
> I'm running out of things to blame!!!   ;-)
>
>
> Steve, NI5V
> ni5v at arrl.net
>
>
> On Dec 15, 2007, at 3:14 PM, David Anderson GM4JJJ wrote:
>
>> What version of Keyspan driver are you using?
>>
>> I'm using an Intel Mac with 10.5.1 and Keyspan 2.4 and I can  
>> communicate between a dual Keyspan adaptor USA-28X and everything I  
>> have hooked up including a Spid Rotator and MacDopper. Have you an  
>> RS-232 LED test dongle that you can put in line and see if data is  
>> being sent and received?
>>
>> I have had odd problems, but that was when I was using a USB hub  
>> and the Keyspan, then sometimes the ports didn't get detected.
>>
>> 73
>> ___________________________________________________________________________
>> David Anderson, GM4JJJ         E-mail: david at gm4jjj.co.uk
>
>
>
>
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-Jack Brindle, W6FB
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