[HFbeacons] Re: Beacons 30 March 2012
- From: n4vbv@xxxxxxxxxxxxx
- To: hfbeacons@xxxxxxxxxxxxx
- Date: Sat, 31 Mar 2012 02:29:42 +0000
Ron,
You can also consult the online ARRL Technical Information Service if you
haven't already done so. And the folks at the TIS are really helpful if you
email them about the problem ("tis@xxxxxxxx" unless it's been changed
recently). Like Bill mentioned - if your signal is getting into the cable, then
theirs is getting out of the cable. And since their signals can interfere with
aircraft navigation, they might want to be careful about calling the FCC. Is
the interference also in your house and electronics? If you have no
interference and you have the beacon at your home, it might not be your beacon
causing the problems.
If anyone near you (or a library) has a copy of the ARRL RFI book, this could
also be helpful. You can also search online for a copy. It specifically
addresses cable TV interference in Chapter 7 (at least in the 2nd edition). And
there's always the possibility that your signals are getting into your
neighbor's homes through a problem in the cable TV equipment.
If you've had no complaints until recently and haven't made any changes (and
all connections, etc. check good), it doesn't sound like it's your system. Of
course all electronic equipment can have a bad component, so you might want to
try monitoring your beacon signal on a nearby radio for any emissions in the
10m band near your beacon's freq or harmonics.
And you can call the cable company's plant manager or chief
engineer/technician. They are probably more experienced than most of the crews
out on the road, and may have heard of a similar problem/solution before yours
occurred. Being nice doesn't hurt, they do have some nice folks that are
willing to work with people, especially if you have lots of evidence/data about
when you were operating, whether you also have the interference in your home or
not, and if you have any info about possible interference from their system.
Listen to the 108-136 band (AM) for any interference. That's the aircraft band,
but if you're close to an airport or navigation aid you might hear them. And
some of the cable leakage may be from poorly shielded TV's, VCRs, or FM tuners.
Anybody nearby purchase a new piece of equipment about the time your
interference complaints started?
I did have great luck with the power company engineer in my Mom's town when
she had bad power line interference. They traced the problem to some bad
hardware and were able to schedule the repairs instead of having an unplanned
outage (that made the line crew happy). The engineer even kept me updated via
email and was really nice to work with. I know it's a different utility, be
still had to deal with people. I did pass on the details/solution to the ARRL
RFI folks.
Some cable systems have Channel 2 on approx 55-59 MHz (about 28 MHz X 2) and
Channel D and E on roughly 139-149 MHz (I combined audio and video freqs). This
is approx 28 MHz X 5 or 6.
Ok, you asked me what time it was and I built a watch. Sorry for the
verbosity, but hope it helps keep you on the air.
Best of luck with the problem, and let us all know how it goes,
Mike, N4VBV
Sent via BlackBerry from T-Mobile
-----Original Message-----
From: ron <k4jee@xxxxxxxxxxxxx>
Sender: hfbeacons-bounce@xxxxxxxxxxxxx
Date: Fri, 30 Mar 2012 16:11:30
To: <hfbeacons@xxxxxxxxxxxxx>
Reply-To: hfbeacons@xxxxxxxxxxxxx
Subject: [HFbeacons] Re: Beacons 30 March 2012
Hello Bill
Well I have a problem here.It might be with my beacon.But I'm not sure yet. I
cut the beacon power back from 25 watts to 5 watts now to see If the problem is
still there.If It Is I will take the beacon off the air until I can figure out
whats going on.I have a Ham friend that works for the cable company here. He
had a tech come to him and asked him if he new a ham that lived on my street. I
was told I'm getting in TV's,telephones and all there electronic devices in
there homes and there are 3 different homes this is happening to.My wife one
day had a knock on the door and they asked if they could talk to me and she
told them I was at work.Than he told her the interference is going on now.So
the only thing it could be is the beacon.The cable tech said that he is seeing
a spike on his spectrum analizer.Oh well I'll keep you posted .No neighbors
have come to me yet but I was told the tech told my neighbors that nothing was
wrong at there homes and said
they might want to write the FCC.
Take Care
Ron
K4JEE
--- On Fri, 3/30/12, WJ5O <wj5o@xxxxxxxxxxxxx> wrote:
From: WJ5O <wj5o@xxxxxxxxxxxxx>
Subject: [HFbeacons] Beacons 30 March 2012
To: hfbeacons@xxxxxxxxxxxxx
Cc: 10mprop@xxxxxxxxxxxxxxxx
Date: Friday, March 30, 2012, 4:35 PM
Good Afternoon All,
Second day in a row that I can call hectic......Thunderstorms in the
area ..On and off light rain now the weather alert radio sounding off
with a severe storm in my county..... A bit dis-disgruntled with my ISP
switch to fiber optics...... Un suspected by the technician as they
buried the cable a control line for my yard sprinklers was
cut.......Also, the buried power line to my lawn equipment storage
garage severed....... My time at the radio has been limited and the
beacon has been un-plugged most of the day because of the storms.
13:43 Z, 30 March 2012 NO ten meter beacon signals heard into EM71.
16:17 Z, 30 March 2012 I can hear 7 ten meter beacon signals into EM71.
28.197 VE7MTY PITT MEADOWS, BC 3605 km 2240 miles
28.2035 PY2WFG IPIRANGA, BRAZIL 5940 km 3691 miles
28.2045 W6CF SAN FRANCISCO, CA 3375 km 2097 miles
28.2085 NB7A RENO, NEVADA 3160 km 1963 miles
28.2313 KE6TE ELK GROVE, CALIFORNIA 3285 km 2041 miles
28.250 K6FRC/2 SUTTERS MOUNTAIN, CALIFORNIA 3233 km 2009 miles
28.300 K6FRC TRACY, CALIFORNIA 3233 km 2009 miles
20:09 Z, 30 March 2012 I can hear 13 ten meter beacon signals into EM71.
28.177 HP1RCP PANAMA CITY, PANAMA 2620 km 1628 miles
28.2035 PY2WFG IPIRANGA, BRAZIL 5940 km 3691 miles
28.2118 AC7GZ CHANDLER, ARIZONA 2426 km 1508 miles
28.2165 N7MA CATALDO, IDAHO 3113 km 1934 miles
28.2313 KE6TE ELK GROVE, CALIFORNIA 3285 km 2041 miles
28.2315 NP4LW SAN SABASTIAN, PUERTO RICO 2419 km 1503 miles
28.250 K6FRC/2 SUTTERS MOUNTAIN, CALIFORNIA 3233 km 2009 miles
28.250 K7EK GRAHAM, WASHINGTON 3510 km 2181 miles
28.250 K8NDB YUMA, ARIZONA 2688 km 1670 miles
28.288 WA7LNW HURRICANE MESA UTAH 2551 km 1585 miles
28.2942 K7RQN PEORIA, ARIZONA 2459 km 1528 miles
28.296 KA7BGR CENTRAL POINT, OREGON 3450 km 2144 miles
28.300 K6FRC TRACY, CALIFORNIA 3233 km 2009 miles
73 Bill WJ5O
Southern Alabama
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