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First Person FCC

August 16, 2011

I am used to meeting with FCC officials in my job, but this was an unexpected encounter.

I was working downstairs at my computer at home when one of my kids called out that someone from the FCC was at the door and could I come upstairs and talk with them.

For a moment, I wondered whether it could be some disgruntled staffer with documents that could bring down a top official or expose a decision struck in a back room somewhere. The closest I came to that scenario was an exchange of information at a gas station near my house one evening, but that was an innocuous favor rather than a Watergate moment.

I extricated myself from a Web filing and greeted a very pleasant women armed with a device that identifies spikes in interference to cell phone service. Turns out Verizon had complained that such interference was coming from my house.

“Did Verizon contact you?” she asked. I said no, and then remembered a Verizon business card that had been stuck inside the front storm door a couple of days before. I had pocketed it without reading the note penned on the margin because, frankly, I have been pursued by Verizon FiOS salespeople within an inch of my patience. I fished it out of my pocket, and sure enough, it said something about interference and could I contact someone immediately. I hadn’t, which brought me to my current visitor.

She asked if I had a security camera, which can cause such interference spikes. I said I didn’t, at least that I knew of. We checked the wireless router, which was fine, then moved toward the front window and the spike spiked even more. Turns out it was my UHF/VHF/FM amplified antenna I had bought recently. I unplugged it, and the spike disappeared.

I have to say that the FCC investigator was extremely professional and pleasant. She showed me her credentials immediately, made no comment about the state of my housekeeping, and even had a laugh with me as we initially thought the culprit was a set of electronic Christmas bells that I was about ready to volunteer for lab testing since she said that was a first. Turns out I was unplugging the wrong cord the whole time. That is why I cover the FCC and don’t work for them.

The next day I happened across a Verizon repairman and mentioned that the interference was coming from a TV/radio indoor antenna.

“That must be why they are trying to get the spectrum from broadcasters to give it to wireless,” he said. Maybe indeed.

Posted by John Eggerton on August 16, 2011 | Comments (5)

11/30/2011 5:57:19 PM EST
In response to: First Person FCC
Deandra commented:

I'm sohcekd that I found this info so easily.


11/28/2011 8:59:39 PM EST
In response to: First Person FCC
Arry commented:

Articles like this are an example of quick, heflpul answers.


9/16/2011 9:30:16 AM EDT
In response to: First Person FCC
Mike Marcus commented:

Sources in FCC say this is actually not that unusual and is a modest but recurring problem. However, the policy side of FCC has shown no interest in a long term solution. The general issue of interference fro antennas with amplifiers has been been around since at least 2002, when Coast Guard issued a warning about similar TV antennas on boats causing GPS interference: http://www.uscg.mil/auxiliary/publications/alcoast/alcoast-298-03.asp
Amplifiers connected to antennas such as those in amplified rabbit ears ears can spontaneously oscillate, like microphones in PA system when you hold them in the wrong place. This is technically similar to part of the cellular amplifier dispute in Docket 10-4, where it has been shown that proper amplifier design can stop such oscillations and FCC is considering mandating such designs for cellular amplifiers.
Prior to DTV, antenna amplifiers were rare and limited to rural areas. However, the DTV "cliff effect" has made them popular as a "rabbit ear" replacement for households, like Mr. Eggerton's, without cable or DBS.
Without some more explicit action by FCC on antenna amplifier emission standards these interference problem will continue to grow and impact a variety of spectrum users including TV broadcasting.


8/18/2011 10:24:49 PM EDT
In response to: First Person FCC
Ted Langdell commented:

Rather unusual situation.
Any clues as to what's causing this antenna to make spikes?
Did the investigator tell you you couldn't continue to use the antenna? Did it have any FCC ID on it?
Did she say whether they've had other instances of problems traced to this brand/model of antenna, and if so, how widespread they were?
Enough to mount a product recall... or fines?
You've spiked my curiosity!


8/17/2011 7:21:38 AM EDT
In response to: First Person FCC
McAdams commented:

Touché!

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