General – Page 41 – Engineering Radio

At a crossroads

This is a situation that is and will be playing out over and over throughout the country as the decay advances. W*** signed on the air in March 1963. I believe this is the original tower:

As you can clearly see from this picture, this tower has several problems. Aside from the loose guy wires, the rust, and general structural decay, it is bent in several places. Currently, the forces are in equilibrium, but for how long, no one knows. It is certainly not safe to climb. At 144 feet, it is no longer required to be marked or lit, thus, over the years, the paint peeled, the weep holes filed up, and the guy wires rusted and loosened, which leaves us with the situation today.

At the transmitter building, there are other issues with the basement flooding, mold, etc. Truth be told, this station makes no money on its own. It would cost several tens of thousands of dollars to fix all these issues, and for what; a high end of the broadcast band class D AM station which has not shown up in the ratings for fifteen years. Once upon a time, it was a surviving, perhaps not thriving, local radio station. Those times have long since passed.

The question is; what to do with it? Sign it off and surrender the license? Fix all the problems and continue to broadcast? Donate it? If so, who would take it? Or, more likely, wait until the tower collapses and deal with it then.

I’d imagine that there are many others just like it dotting the country. On the whole, the AM broadcasters that are viable would be better off if this dead wood was cut away and discarded.

The melted ground wire

I found this on one of the guy wire anchor points for a 400-foot tower:

#2 solid copper wire burned open by lightning strike — #2 solid copper wire burned open by a lightning strike

Had to be a pretty big hit to burn open a #2 wire. This is on one of six guy anchor points for the tower. The ground wire is U-bolted to each guy wire before the turnbuckle and then goes to ground. This was noted between the last guy wire and the ground rod.

It is important to find and fix these things, as the next lightning strike on this tower would have a less-than-ideal path to ground at the guy anchor points, forcing the current to flow through other parts of the transmitter site, possibly through the transmitter itself, to ground.

I generally try to do a brief inspection of towers, guy anchors, lighting, painting, and a general walk around the property twice a year. That helps prevent surprises like “Oh my goodness, the guy wires are rusting through,” or “Hey, did you know there is an illegal “hemp” farm on your property?” Well, no officer, I don’t know anything about that…

Micro Radio goes to Occupy Wall Street

I read a very interesting article from John Anderson regarding the Occupy Wall Street movement’s use of media, specifically low-powered radio. Being a native New Yorker, the demonstrations are of some interest to me. To date, the demonstrators have placed a wide variety of grievances at the feet of “Wall Street,” some justly and some not. What I found interesting about it is this:

Last week, the Occupy Wall Street encampment established a microradio station at 107.1 FM. The station simulcasts the 24/7 live stream which provides coverage of life inside Zuccotti Park, as well as street-level reportage of daily protest actions in New York City’s financial district.

One of the reasons for this is the City’s ban on the use of amplified speakers and or public address systems. By using a micro radio station, persons in a crowd too far away to hear the orator can use a small FM radio or even their smartphones to listen to the speech. Another reason is the idea that large corporate media has been controlling the narrative for far too long, to the detriment of the average citizen.

Zuccotti Park is in lower Manhattan, about two blocks away from Wall Street itself. It is described as 33,000 square feet, which makes it about 3/4 of an acre. A part 15 FM radio station (47CFR 15.239) can easily cover this area and more. Even with the station limited to 250 µV field at 3 meters from the radiating element, generally thought to be 100 mW TPO, the reliable coverage area would be a radius of approximately 200 feet, depending on local interference. That makes the coverage area approximately 125,600 square feet or more. There are several other stations licensed to 107.1 in the greater NYC area; WXPK, WWZY are the closest and most likely to cause problems.

I am not sure how they are generating their live stream, but when listening to it for several hours over the weekend, I found it interesting and technically well done. They seem to be running circles around others, who are only grudgingly admitting that there might be something going on in some forty-odd cities across the US.

Micro Radio is a creative way to use the available technology and keep the public and protesters informed.

Towers in the fog/repeating geometric shapes

For no other reason than they were there, I took a few shots under a couple of 300-foot self-supporting towers.

300 foot self supporting communications tower in fog — 300-foot self-supporting communications tower in fog

This tower has a UHF slot antenna on the top of it fed with 6-inch hard line.

280 foot self supporting tower — 280-foot self-supporting tower

Tower next to the first one. Both can be found on North Mt. Beacon, NY, about 1,800 feet AMSL.