Insulators for wire antennas

Prices are in our General Catalog.

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Alpha Delta Antenna Insulator Kit

Quality center insulator features a built-in replaceable SEP ARC-PLUG static electricity protector. Bleeds off slow rising static electricity charges and sends it to ground before it can damage your gear. The center insulator and end-insulators are made of rugged, UV resistant DELTALLOY. Hand soldered components and stainless steel hardware.

For best results, use a C1-2K "Retrofit" Balun with these or any other center insulators.

Delta-C Hardware Kit

Includes Center-insulator plus 2 end-insulators

Delta-CIN

End-Insulators - These are terrific. We are NOW using these insulators on all out top-of-the-line products. Definitely recommended.
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LadderLoc tm for ladder line

NEW! The LadderLoctmhas a new UV-stabilizer for even longer life in the sun. It also gives the device a distinctive pea-green color. The price remains unchanged.

If you use ladder line, this is the perfect center insulator for your project. It properly supports and provides strain relief for your ladder line. Full instructions are included. After you use one of these, you'll never use one of those home-made things again. 9" x 6"

Take me to your Ladder-line

6" Universal Insulator (Insulator #1)

Works as a strain insulator or conventional end-insulator. Ribs are spiral cut for winding loading coils, etc. Black plastic. Used as a strain-insulator, this insulator is excellent for heavy wire antennas.

Plastic Strain Insulator

(Insulator #2)

These inexpensive, black or yellow (depending on source's color of the week!) plastic strain insulators are great for any antenna project. They are NOT suitable for towers, but are OK for masts, verticals, etc. We use them on wire antennas because they can be installed in the middle of a wire without removing the end-insulators and threading them on.

Get a couple of dozen before someone figures out what these things should really cost.

HQ-1 Center Insulator

These are the insulators we use in our antenna systems. They are light weight but incredibly tough, glass-filled, ABS plastic. Holes in the insulator's body provide strain-relief for your antenna wire. A built-in drip-lip over the SO-239 helps weatherproof the connector. They are excellent as the center insulator in any antenna not requiring a balun at the feedpoint.

HQ-2 (Insulator #3)

The HQ-2 end-insulator is made by the same manufacturer as the HQ-1 center-insulator. These are my insulators of choice for all antenna systems, unless you want an even longer leakage-path. In that case, use the CIN. If you need to carry a heavy load, then it's the AI-5. For everything else, the HQ-2 is it. It is small, only about 1.5 " long, but it's leakage-path, due to deep ribbing, is about 6". HQ-2's are glass-filled and are nearly impossible to break.

AI-5 (Insulator #4)

Very heavy-duty end-insulator

Made by B&W. The AI-5 is rated at 1000 pounds and it's just about 4" long. It is made with a very hard, glass-filled plastic compound. This is the insulator for heavy antennas.
B-I Insulator

B-1 Center Insulator

This is a top quality center insulator made just like we make our baluns. #14 insulated wires are brought directly outside the case for soldering to your antenna wire. This avoids any chance of failure so prevalent with screw and nut compression connnections. Hardware is stainless steel. You can't buy a more reliable center insulator. Use with any wire antenna. SO-239 coax connector accepts PL-259 coax connectors.

Made by the RADIO WORKS

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