[BVARC] RFI
jcluppens at ussailing.net
jcluppens at ussailing.net
Sun Dec 19 20:21:49 CST 2021
I am in similar situation with my Ciro Marconi STEALTH magnetic loop on my small balcony 18 stories up. I have ended up buying frequency specific ferrite devices from Palomar Engineering that allow for at least three loops of the USB cable to be used. Both what I have read and my experience indicates this is most effective. Once in a while I still have a problem with noise but I no longer get disconnected. I rarely loose the connection to HRD when using it, but only after have been on for some time. Not sure of cause of that. I am fairly close to the antenna itself and only have 45-ft of cable to get to it. Being in high rise I have no possibility of using a linear and live with a 100 watts max power.
Chris – KG5BBF
From: BVARC <bvarc-bounces at bvarc.org> On Behalf Of Robert Polinski via BVARC
Sent: Sunday, December 19, 2021 8:02 PM
To: 'BRAZOS VALLEY AMATEUR RADIO CLUB' <bvarc at bvarc.org>
Cc: Robert Polinski <emdhouston at suddenlinkmail.com>
Subject: Re: [BVARC] RFI
David, put several ferrite beads on the USB (Both ends) and the network cable & any other cables feeding the computer. (printer, etc) May also need a choke in the feedline. Robert KD5YVQ
From: BVARC <bvarc-bounces at bvarc.org <mailto:bvarc-bounces at bvarc.org> > On Behalf Of David F. Reed via BVARC
Sent: Sunday, December 19, 2021 6:24 PM
To: bvarc at bvarc.org <mailto:bvarc at bvarc.org>
Cc: David F. Reed <w5sv.dave at gmail.com <mailto:w5sv.dave at gmail.com> >
Subject: [BVARC] RFI
Due to some HOA C&R, I am confined to attic and gutter antennas for the time being.
I am getting a bit of RFI on occasion into my PC; it manifests itself mainly by apparently disconnecting the com port from Commander. When this happens, I can restore functionality by selecting a different com port, and then re-selecting the original correct com port.
I am grounded to a 10' ground rod about 8 ft. from the station via 2" copper strap. I did install ferrite beads on the USB cables at the back of the PC as well as on the power cord, and this has reduced the frequency of occurrence, but I would like to eliminate it altogether.
Any other ideas and suggestions would be most appreciated!
Thanks & 73 de Dave, W5SV
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