BPOL -- Broadband over Power Lines. An ongoing controversy between the
ARRL and the FCC. Most of the BPOL experiments have now failed, due
to broadband noise in the HF spectrum. Motorola does make a system
that works and is quiet, but I am not sure when and where it is or has
been implemented.
Search the ARRL website for more information. We have it in Nelson
County, VA, and my HF mobile is almost useless when traveling through
the county. There was a system in Northern VA that was essentially
shut down due to interference problems.
Since you have cable service that probably provides broadband
internet, BPOL probably isn't the culprit, but worth looking into to
see if your local power company and county are trying an experimental
system.
geep
On Oct 1, 2009, at 11:00 AM, Jim Madden wrote:
Geep, thank you. What is BPOL? I searched the internet for this
briefly but
did not find anything that made sense.
jim
-----Original Message-----
From: flexradio-boun...@flex-radio.biz
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Geep Howell
Sent: Thursday, October 01, 2009 7:32 AM
To: tpcj1...@crocker.com; Flex Radio
Subject: Re: [Flexradio] ...odd signals...
Are you, by any chance, in an area that is served by BPOL? This
sounds suspiciously like just that kind of interference, although it
does not normally extend higher than 35 Mhz or so.
geep
wa4rts
On Oct 1, 2009, at 10:23 AM, John Ragle wrote:
Jim...
I live out in the countryside on a dead-end road (in the middle of
a corn field) with 12 houses on it. My panadapter screens on almost
every band are filled with spurious signals that go away when I
remove the antenna (or connect to a 50-ohm dummy load). I have tried
turning off my WiFi router (no relief), my wife's computers (no
relief), disconnecting my cable modem (no relief). Similar spurs
show up on my non-digital 2 meter rig (IC-910) with all the
household computers and the modem off, and those also go away when I
disconnect its antenna. The most common of these spurs is a cluster
of 3 narrow signals spaced by 1 or 2 kHz and occurring every 90-95
kHz or so. They do not appear to be a carrier and sidebands. Some of
the spurs wander slowly across the spectrum at a rate of a few kHz
an hour.
My cable service and all my other services are /*underground*/ up
to the house. I have not tried shutting down the power to the house
(awkward), but conclude these are real signals emanating from the
neighborhood. The nearest above-ground power, phone, and cable lines
are at least 500 feet from the house. Many of my close neighbors run
computers of unknown vintage. My choice is either to hire out a "fox
hunter" or ignore the spurs. By now, the spurs are "old friends."
John Ragle -- W1ZI
_______________________________________________
FlexRadio Systems Mailing List
FlexRadio@flex-radio.biz
http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
Knowledge Base: http://kc.flex-radio.com/ Homepage:
http://www.flex-radio.com/
Message delivered to g...@wa4rts.net
_______________________________________________
FlexRadio Systems Mailing List
FlexRadio@flex-radio.biz
http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
Knowledge Base: http://kc.flex-radio.com/ Homepage:
http://www.flex-radio.com/
Message delivered to technology.mag...@verizon.net
_______________________________________________
FlexRadio Systems Mailing List
FlexRadio@flex-radio.biz
http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Message delivered to arch...@mail-archive.com
