True, Kenneth. But you fail to realize the average amateur radio operator
of today is COMPLETELY NON-TECHNICAL. Most are just appliance operators
to score the highest in any given corntest (that's no misspelling on my
part!).
Dave - WØLEV
On Sat, Aug 6, 2022 at 6:48 PM Kenneth Goodwin <krgoodwin@comcast.net>
wrote:
> Solve the root cause not the symptom. RF energy in the shack (matched
> antenna), use decent USB cables, cheap laptop??
>
> Sent from Nine
> ________________________________
> From: rfi-request@contesting.com
> Sent: Saturday, August 6, 2022 11:00 AM
> To: rfi@contesting.com
> Subject: RFI Digest, Vol 235, Issue 6
>
> Send RFI mailing list submissions to
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> Today's Topics:
>
> 1. USB port closing (Martin Sole)
> 2. Re: USB port closing (Joe)
> 3. Re: USB port closing (David Hale)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 6 Aug 2022 13:50:22 +0300
> From: Martin Sole <hs0zed@gmail.com>
> To: rfi@contesting.com
> Subject: [RFI] USB port closing
> Message-ID: <e21e0029-2eda-a9de-0786-e80ba8528ba2@gmail.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> 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
>
>
> ------------------------------
>
> Message: 2
> Date: Sat, 6 Aug 2022 07:15:11 -0700
> From: Joe <w7rkn.7@gmail.com>
> To: "'Martin Sole'" <hs0zed@gmail.com>, <RFI@contesting.com>
> Subject: Re: [RFI] USB port closing
> Message-ID: <00b601d8a99e$f11dd260$d3597720$@gmail.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Win4L (???) Sounds more like an HP Printer driver. Please let us know
> the
> correct Windows version. Thanks!
>
> Joe - W7RKN
>
> -----Original Message-----
> From: RFI [mailto:rfi-bounces+w7rkn.7=gmail.com@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
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sat, 6 Aug 2022 08:01:04 -0700
> From: David Hale <astronomerdave@gmail.com>
> To: rfi@contesting.com
> Subject: Re: [RFI] USB port closing
> Message-ID:
> <CAMA0n1Lt0m8r2g9tY8_W+vKZ=uLYm4UxEXcZjGHbe0GWTT60Xg@mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> I had a similar problem with the old laptop I use in the shack. I was able
> to get 17T of my USB cable through a Fair Rite #31 2.4in (2631803802)
> toroid and have been trouble-free ever since. I did this close to the
> radio. Here's a picture:
> https://sites.astro.caltech.edu/~dhale/share/usb-choke.jpg
> 73 de Dave N3WTK
>
> On Sat, Aug 6, 2022 at 3:50 AM Martin Sole <hs0zed@gmail.com> wrote:
>
> > 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
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
> >
>
>
> ------------------------------
>
> Subject: Digest Footer
>
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> ------------------------------
>
> End of RFI Digest, Vol 235, Issue 6
> ***********************************
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--
*Dave - WØLEV*
*Just Let Darwin Work*
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