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Transmission of signals between various locations.

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Devices used to propagate signals between transmitters and receivers.

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The Bird Feeder Antenna

Shortwave antennas are large and trying to hide one can be like trying to hide an elephant. Many listeners try different configurations, snap together antennas, wires, and flag poles to conceal their antennas. Some work out, but most get caught in the end.
First, let's look at what you can and can't have. Most restrictive housing areas have a long list of items you can't have. Clothlines, TV antennas, sheds, flags, BBQ grills, etc. And most of all, the all important shortwave antenna. It has something to do with nice surroundings.
So, what to do?
Make a list of all forbidden items and place them in a column on the left side of the page.
Next, list what you can have and list them in the center of the page.
Finally, list the items that are readly available in the area of your home. Such items are trees, gutters, vents, fences, etc. Look closely and don't leave anything out.

A hidden shortwave antenna must be just that: Hidden.
I should not be visible to the naked eye, even at a point blank range.
So, list the areas that you have a ready access to.
If you can get to the roof, write it down.
How about the attic, basement, trees, etc, especially without much notice by your neighbours.
Most shortwave antennas are discovered not because of their design or placement, but rather a neighbour spies the listener installing the antenna - or at least doing something out of the ordinary.
For example creeping around on the roof, on a Saturday afternoon, is going to draw attention. Flinging wires over trees is sure to draw some attention.

The big point here is not to install the antenna by looking like your installing an antenna or doing something out of the ordinary.
There are some new designs out on the market such as PVC vent pipe antennas for 2m. But for now we'll stick to shortwave. Most contracts for condo/PUD dwellers will allow bird feeders. And even apartment dwellers on the bottom floor can benefit from this design.

The Bird Feeder

The Bird Feeder shortwave antenna is a vertical cage wire antenna.
A What? you might ask.
Imagine if you will eight flexible wires, evenly spaced in a circular pattern, much like a ground plane. Draw these wires vertically to form a wire 'tube' and connect them together with a ring at the top. Now imagine these wires inside a telescoping PVC mast. Top that off with a bird feeder. Now, instead of a ground plane system with radials you have to put in (the neighbours are watching), you have this 'wire tube' constructed as a vertical dipole. At 10m, the Bird Feeder antenna is a mere 17' tall when raised.
What would the neighbours say?
Or for that matter the manager?
"I raised it up for the birds to get into and it keeps the squirels out too. And look, I can take it out when I'm not using it or the weather is bad. Boy, I really like watching the birds from my window. Did you know that ..."
And then go on about some rare, but not unbelievable birds that frequent the feeder. Buy a book on the subject with some pages tagged to show them what you've seen so far. At worst, they'll think you're a flake and leave you alone. Next, go in and tune up 10m and catch some rare DX instead.

What do you have to actually put into the ground? Your coax and a PVC pipe to hold the mast up. Make it low in the ground and cap it so the mower doesn't take it off. For the most part, you can leave it up.
But do remember to put some seed in the feeder once in a while...

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