Insulators for Wire Antennas

CENTER INSULATORS

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.
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Center Insulator, strong, SO-239 connector
$14.95 each
 
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 connections. 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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Center Insulator, strong, stainless steel eye bolts, SO-239 connector
$14.95 each
 
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LadderLoc™ for ladder line

NEW! The LadderLoc™ has 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

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Center Insulator for ladder line to wire antennas $14.95
 

Insulators For Attic Antennas

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NRAI Snug Fit Insulator
Nail-on Rafter Insulator for wood holds antenna wire about 3/4" from surface. Use with rope or insulated wire* up to 5/16". At least 10 insulators are recommended for rafter installations. Requires two (2) #8x3/4" screws supplied by the user.
99¢ each
$7.95 pk of 10
SRAI Standoff Insulator
Screw-in Rafter Insulator for wood holds wire about 6" from surface. Recommended for a deluxe installation. Use with rope or insulated wire* up to 5/16". At least 10 insulators are recommended for rafter installations.
$1.89 each
$16.95 pk of 10
* Use insulated wire in attic antennas.

END INSULATORS

CIN end-insulators are made of rugged, UV resistant DELTALLOY. These are terrific. We are NOW using these insulators on all out top-of-the-line products. Definitely recommended.
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#5 End insulator - Rugged , UV resistant insulator used in most of our antennas
$1.75 each
 

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. 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.
Note: We use these insulators in our Low Profile versions of the antennas.
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#3 End insulator - Small, glass-filled, deeply ribbed.
$1.69 each

Ceramic Dogbone

. It's the classic Dogbone insulator you've used for years.

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#6 End Insulator - Ceramic
$0.79 each
 

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.

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#2 End Insulator - Strain-type - Plastic
$0.79 each
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Antenna accessories you may need

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