[Dx4win] How to identify serial ports on new computer?

Larry Alkoff labradley at mindspring.com
Thu Sep 17 15:51:20 EDT 2009


Thanks very much for your most interesting post Pete.

Indeed I had a bunch of devices including duplicates of the CyberPro PCI 
4S 4 port serial board.  Apparently I made an error when installing the 
board.

One good thing is I found a second serial header on the motherboard.

However I still have not gotten CAT to work.
I'm going to swap in my spare Mark V - perhaps the CAT port is bad.

I'll make a note of that clever devmgr_show_nonpresent_devices=1 line.
It will probably come in handy in the future.

Jim thanks for the heads up on the many more com ports in DX4Win v8.
It would have saved me a lot of trouble but when I saw the business
of requiring Admin mode to install (and run?) and placing DX4W in the 
root directory (both big nonos for me) I lost interest.  Also I'm 
running out of time to learn and convert data for DX4W 8.

Larry



Pete Smith N4ZR wrote:
> Following was just posted on the N1MM reflector - I think it is relevant 
> to this query:
> 
> "This may be the situation where the low-numbered COM ports are being 
> reserved bydevices that are no longer present. Here's a replay of W5OV's 
> e-mail for checking and correcting that:
> 
> 
>  ------------------------------------------------------------
> 
>  And for those who want to clear out those low number ports that don't need
>  to be cluttering up your Device Manager listing anymore, you can follow
>  this
>  process:
> 
>  1. Click Start
>  2. Click Run
>  3. Type cmd.exe in the textbox and click OK
>  4. Type set devmgr_show_nonpresent_devices=1 and hit ENTER
>  5. Type cd\windows\system32 and hit ENTER
>  6. Type start devmgmt.msc and hit ENTER
>  7. When the device manager opens, click the View menu
>  8. Click Show Hidden Devices
>  9. Click on the + sign next to the Ports to see the full list of Com ports
>  being used.
>  10. Highlight the port you wish to delete and then press delete. Accept
>  when
>  asked to do so and continue with any more that you wish to delete."
> 
> 
> 73, Pete N4ZR
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> http://wiki.contesting.com
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> 
> 
> On 9/17/2009 1:53 PM, Jim Reisert AD1C wrote:
>> On Thu, Sep 17, 2009 at 11:42 AM, Larry 
>> Alkoff<labradley at mindspring.com wrote:
>>
>>   
>>> When I viewed the com ports it showed 1,2,3  then 8,9,10,11.
>>>
>>> Ports 2 and 3 do not exist but apparently something was once assigned to
>>> them.
>>>      
>>
>> They may be on your motherboard, with no access (cabling) to the 
>> bulkhead.
>>
>>   
>>> DX4Win only goes to 8 so I changed the port number in DX4Win to 8 and it
>>> started keying.
>>>      
>>
>> DX4WIN 8.0x supports up to 32 COM ports.
>>
>>    
> 



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