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Insulators for Ham Radio Antennas – Durable, Weather-Resistant, Reliable

DX Ham Radio Supply offers a full range of antenna insulators for dipoles, wire antennas, end-fed designs, and more. Whether you're building a field antenna or upgrading your permanent HF installation, our insulators provide long-term durability, high dielectric strength, and excellent mechanical support.

Types of Antenna Insulators Available

  • Dog Bone Insulators: Lightweight and UV-resistant, perfect for end support on dipole and EFHW antennas
  • Center Insulators: Designed for strong, clean center-feed configurations, often with SO-239 or eyelet terminations
  • Ceramic and ABS Plastic Options: Excellent insulative properties and resistance to moisture and aging

Built to Withstand Outdoor Conditions

  • ✅ UV and weather-resistant materials for long service life
  • ✅ Reinforced mounting points for strong tension and wind resistance
  • ✅ Easy integration with wire, rope, and coaxial feed systems

For Portable and Permanent Installations

Our insulators are trusted by amateur radio operators for building reliable antennas in every environment—from temporary portable deployments to rugged, long-term station installs.
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Center insulator, 4.5" long, porcelain Budwig insulator Budwig insulator
Budwig Center Insulator
Our price: $2.49

(5)
Airplane Center line Insulator 4.5" Budwig long Wire end-insulator, fiberglass reinforced, UV resistant Light weight and durable; excellent for HF dipoles and wire antennas.

 		Designed for durability and light weight, this connector provides a coax SO-239 socket for accepting a PL-259 feed line plug
Center Line Insulator Aluminum Ferrules 1/8" Aluminum Ferrules 1/32"
Double Barrel Ferrule 1/8"
Our price: $0.33

(1)
Center insulator with hang-up hook, SO-239 coax connector, Stainless eye bolts, weatherized, rugged, 600 lbs pull strength One Pair (2) 1/8 Aluminum Ferrule secures straining wire. This will fit Davis RF Flex-Weave™ 12 Gauge 259 strand wire with PE Jacket One Pair (2) 1/32 Aluminum Ferrule secures straining wire. This will fit Davis RF Flex-Weave™ 14 Gauge 168 strand wire with PE Jacket
Feed Thru Insulator 1-7/8" L Feed Thru Insulator 3.5" Feed Thru Insulator 6"
Feed Thru Insulator 3.5"
Our price: $19.32
Feed Thru Insulator 6"
Our price: $36.75

High Voltage, Ceramic Feed Through Insulator, Bench Testing Results 14 KV (before any leakage detected), Screw length: 2.095 in, Screw Diameter: .183 in. Screw Material: Stainless Steel, Ceramic Outer Diameter .755 in, Ceramic Inner Diameter (Mounting Hole) .384 in, Screw Thread 10-32

 		3.5" High-strength, low absorption dry process vitrified porcelain, corrugated shape, for longer leakage paths. Feed-thru panels, chassis, rack mountings, etc. White glaze finish to retard moisture absorbsion & reduce dirt/dust accumulation. Hardware: Brass Nickel plated rods, nuts, flat washers, and cork washers for cushioning. 6" High-strength, low absorption dry process vitrified porcelain, corrugated shape, for longer leakage paths. Feed-thru panels, chassis, rack untings, etc. White glaze finish to retard moisture absorption & reduce dirt/dust accumulation. Hardware: Brass Nickel plated rods, nuts, flat washers, and
cork washers for cushioning.
Wire Beverage Insulator Pk. 25 KV4YS Dipole Center insulator LADLOCK
Ladder-Loc
Our price: $18.94
Sale Price: $17.94
Savings: $1.00

(2)
Wire/Beverage insulator, 1.5"L x 0.75" W, nail through center (nails not included) 25PK KV4YS Center insulator with with Silver plated brass SO-239 connector for Dipoles or coax , Stainless Steel Hardware, Electrical PVC body (does not include ferrules wire) The Ladder-Loc (r) UV inhibited, strain relief and mounting support, center line insulator for 450 OHM Ladder Line
Large Egg Insulator, 2.25" long, 1.5" wide, .40" holes, porcelain 10-06 Porcelain End Insulator Small egg insulator, 1.5" x 1.0 " x .25" h
Large Egg Porcelain Insulator
Our price: $3.89

(2)
Porcelain End Insulator
Our price: $2.59

(2)
Large Egg Insulator, 2.25" long, 1.5" wide, .40" holes, porcelain Porcelain End Insulator, 2.5" long, 1.0" wide, .20" holes Small egg insulator, 1.5" long, 1.0 " wide, .25" holes, porcelain
White Dog Bone Insulator White Dog Bone Insulator
White Dog Bone Insulator
Our price: $1.09

(12)
White Dog Bone Insulator 4 PK
Our price: $3.96

(2)
3” Dog bone plastic (polyethylene) Extra High Strength, UV resistant. White, ¼” holes on each end. 4 pk, 3” Dog bone plastic (polyethylene) Extra High Strength, UV resistant. White, ¼” holes on each end.