April 2011
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Heads? Tails? I don't really know

When confronted with something like this:

Transmitter Remote Control Wiring

Transmitter Remote Control Wiring

It is often faster to cut all the old wiring away and start over.  This is a transmitter remote control system which was initially installed in the early 70’s.  Over the years, it was added to, subtracted from, divided, multiplied, sliced, diced, etc.  In the end, the existing wiring documentation did not match most of what was there.  Additional to that, several of those terminals have 120 volts and I found at least one instance of 208 volts.

Therefore, we began by removing all of the wiring from the backup transmitter, running a temporary audio wire and switching to the backup.  Then, with all the breakers turned off, all the wiring was removed from the main transmitter, phasor and remote control interface and we started over:

Transmitter site remote control interfaces

Transmitter site remote control interfaces

Once upon a time, some engineer built these remote control interfaces, which are quite nice.  We decided to re-use them where 120 volt control is required.  When completed, I will tape over the terminal and label them accordingly.  The main transmitter uses open collector control, therefore, it can be wired directly to the Burk ARC-16 IP-8 panel.

Burk IP-8 Remote Control interface panels

Burk IP-8 Remote Control interface panels

The Burk unit, as wired with the main transmitter, common point, tower lights, phasor and antenna monitor.  The project has not been without some small off air incidents, once while we removed a metal name plate that had fallen into an inductor in the phasor.  All in all, progress is being made.


A pessimist sees the glass as half empty. An optimist sees the glass as half full. The engineer sees the glass as twice the size it needs to be.

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~1st amendment to the United States Constitution

Any society that would give up a little liberty to gain a little security will deserve neither and lose both.
~Benjamin Franklin

The individual has always had to struggle to keep from being overwhelmed by the tribe. To be your own man is hard business. If you try it, you will be lonely often, and sometimes frightened. But no price is too high to pay for the privilege of owning yourself.
~Rudyard Kipling

Everyone has the right to freedom of opinion and expression; this right includes the freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers
~Universal Declaration Of Human Rights, Article 19

...radio was discovered, and not invented, and that these frequencies and principles were always in existence long before man was aware of them. Therefore, no one owns them. They are there as free as sunlight, which is a higher frequency form of the same energy.
~Alan Weiner

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