[RFI] USB port closing

[EDWARDS, EDDIE J]

-----Original Message-----
From: RFI On Behalf Of Martin Sole

>So far nothing has worked and the station is still plagued with Win4Icom disconnecting after a few transmit periods. 

As Jim Brown mentioned, it might be the Power Mgmt settings that are making your USB ports turn off to save power.  If you haven't checked these, do so. 
 -Go to Device Manager, then Universal Serial Bus Controllers.  
 -Look at all USB devices listed especially Root Hubs looking for any with Power Management tabs.
 -Uncheck all the power saver boxes on this tab for all USB devices. 

>As I understand it the station is located inside the house and the connection to the outside ground is approximately 20 feet. 
>Right now I can only assume there is a lot of RF inside the station though before moving things around in the same shack the IC-7300 was working perfectly for very long periods of time.

If you have any long wire antennas, does it have an RF Choke on the feedline at the cable entry to the building/home?  I had 40 meter RFI tripping my internet router until I added a quality RF Choke inline to the coaxial cable to that antenna.  Probably broke up any common mode resonance of the cable that was tripping only on 40 meters CW portion.  

73, de ed -K0iL


> -----Original Message-----
> From: RFI [mailto:rfi-bounces+w7rkn.7=gmail.com at contesting.com] On 
> Behalf Of Martin Sole
> Subject: [RFI] USB port closing
>
> Hi,
>
> I'm writing this for a friend. He has an Icom IC-7610 connected to a 
> laptop running Win4Icom. At anything over about40 watts it doesn't 
> take many FT8 transmit cycles before Win4Icom will report a connection 
> error,the error log shows port closed and the author's statement in 
> the alert box that appears is that this is most likely caused by RFI.
> Accordingly, we want to deploy suitable ferrite on the USB cables. My 
> thinking is that 3 to 4 turns around one of the medium or large type 
> 31 snap on's that DX engineering sells, at each end of the USB cable, 
> would be a good start.
>
> Is my thinking here sound or are there other things we should try first?
>
> Thanks
> Martin HS0ZED
>
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