Ham Radio Antenna Build Guides — All Types & Frequencies
Step-by-step construction guides covering the full range of amateur radio antenna projects — from simple HF wire antennas to advanced directional arrays, from 160 meters through 23 centimeters. Includes low-band antennas, portable and SOTA designs, VHF and UHF builds, satellite antennas, magnetic loops, NVIS designs, and lesser-known but highly effective antenna types. Every guide includes materials lists, construction steps, weatherproofing, and tuning instructions.
20m Half-Wave Dipole
The foundational HF antenna. Wire, coax, current choke, two supports. Resonant on 20m, usable on 10m and others with a tuner. Full step-by-step with tuning.
40m Half-Wave Dipole
66 feet of wire for the most popular HF ragchew and DX band. Works 40m, 15m, and often 80m with a tuner. NVIS at low height, DX at higher installations.
80m Half-Wave Dipole
130 feet of wire for regional and NVIS communication. Covers phone, CW, and digital on 80m/75m. Inverted-V configuration recommended to manage the span with one center support.
160m Inverted-L
A top-band solution for stations without 260-foot spans. Vertical section plus horizontal top-hat. Efficient for 160m DX when combined with a solid radial system.
Fan Dipole — 40/20/10m
Multiple parallel dipole elements sharing one feedpoint. Each leg pair cut for a separate band. No traps, no tuner needed on covered bands. True multi-band performance from a single coax run.
Trap Dipole — 80/40/20m
Resonant LC traps electrically shorten the antenna on higher bands, allowing a single-wire dipole to cover three bands at reduced physical length. Includes winding your own traps.
Off-Center-Fed Dipole (OCFD)
A dipole fed 1/3 from one end instead of at the center. The asymmetric feed point allows multi-band resonance on 80, 40, 20, 15, and 10m from a single wire with a 4:1 balun.
40m Delta Loop
Full-wave equilateral triangle — 134 feet of wire across three supports. Approximately 2 dBd gain over a dipole, quieter receive, and works multi-band with ladder line and a tuner.
80m Full-Wave Square Loop
264 feet of wire in a square configuration — outstanding low-noise receive characteristics on 80m and covers 40m through 10m with ladder line. A serious multi-band antenna for those with space.
W3EDP End-Fed Wire
A classic 85-foot end-fed wire with a short counterpoise. Works on 80m through 10m with a tuner. One of the most popular multi-band wires in amateur radio history — simple and effective.
ZS6BKW / G5RV Improved
An improved version of the classic G5RV — optimized matching section length for lower SWR on more bands. Covers 10m through 40m without a tuner on most covered bands.
EFHW Portable — 40m through 10m
33-foot wire with a homebrew 49:1 UNUN wound on FT-240-43. Packs into a pocket, deploys in minutes, covers 40/20/15/10m without a tuner. The go-to for SOTA, POTA, and field day.
EFHW — 80m through 10m
66-foot wire version for 80m as the fundamental, covering 80/40/20/15/10m on harmonics. Longer wire needs higher supports but delivers excellent low-band portable coverage for POTA and field ops.
Linked Dipole — Multi-Band
A portable dipole with clip-in link sections that extend the wire for lower bands. Change bands by clipping in or removing sections — no tuner needed. Popular for SOTA where low weight is critical.
Telescoping Vertical — Portable HF
A telescoping whip with a tuner and a few radial wires. Compact, lightweight, and deployable in 5 minutes on any summit or park. Works 40m through 10m with a portable ATU.
Homebrew PAC-12 Style Vertical
A loading-coil vertical similar to the commercial PAC-12. Switchable coil taps cover 40m through 10m. Compact and efficient for a loaded antenna — excellent for POTA and emergency deployment.
40m Quarter-Wave Vertical
33-foot ground-mounted vertical with a buried radial system. Low-angle DX radiation on 40m. Complete installation guide from ground anchor to feedpoint matching and weatherproofing.
20m Quarter-Wave Vertical
16.5-foot vertical for the primary DX band. Omni low-angle radiation — competitive with a dipole for DX, superior when pointed in the right direction isn't possible. Elevated or buried radials covered.
80m Base-Loaded Vertical
A loading-coil vertical for 80m where a full 65-foot quarter-wave isn't practical. Covers the full band with a tuner. Base loading coil design and construction included.
Radial System Installation Guide
Complete guide to laying a buried or elevated radial system for any HF vertical. Covers wire selection, burial depth, radial quantity trade-offs, and how to connect radials to the feedpoint.
Multi-Band Trapped Vertical
A trap vertical covering 10, 15, 20, and 40m from a single radiator using resonant traps at each band junction. Includes winding and tuning each trap for correct resonance.
4-Square Phased Vertical Array
Four quarter-wave verticals in a square arrangement, fed with a phasing network for switchable directional patterns. The serious DXer's choice for 40m and 80m low-band operation.
HF Magnetic Loop — 40m to 15m
A small transmitting loop built from copper pipe or coax with a butterfly capacitor. Covers 40m through 15m with narrow-bandwidth but genuine HF operation — suitable for indoor and attic use.
20m Magnetic Loop — Portable
A lightweight magnetic loop for 20m using RG-213 coax as the main element and a variable capacitor. Packable and deployable in the field — useful for POTA and travel operation.
Receive-Only Shielded Loop
A shielded small loop specifically designed for low-noise receive on 160m, 80m, and 40m. Dramatically reduces local interference pickup compared to a wire antenna in urban environments.
10m 3-Element Yagi
Aluminum tubing beam for 28–29.7 MHz. At 16-foot boom length this delivers ~7 dBd with a manageable physical size. Excellent for solar maximum DX and 10m FM simplex contacts worldwide.
10m Moxon Rectangle
A compact folded beam with ~5 dBd gain and excellent front-to-back ratio, fitting in 30% less space than a full-size Yagi. Wire construction on a simple PVC frame — no metal fabrication needed.
20m Moxon Rectangle
A wire Moxon for 20m — directional performance without aluminum tubing. Approximately 28 feet wide and 10 feet deep. A practical rotatable beam for stations without a tower.
2-Element Delta Loop Beam
Two delta loops in a driven/reflector arrangement — delivers ~5 dBd gain with excellent low-angle radiation. Excellent for 20m and 40m where tower height is limited. Parasitic loop spacing and phasing covered.
2-Element Cubical Quad
Full-wave wire loops on a spreader frame — 2 elements deliver ~7 dBd with lower noise and lower takeoff angle than a comparable Yagi. Covers 20m, 15m, and 10m from one structure.
6m Half-Wave Dipole
A 9-foot wire dipole for the Magic Band. Simple to build, effective for Sporadic-E, meteor scatter, and regional SSB. Often the first VHF antenna an HF operator builds when propagation opens.
6m Halo / Turnstile
An omnidirectional horizontally polarized antenna for 6m — ideal for multi-direction Sporadic-E contacts without a rotator. Two phased dipoles at right angles provide near-circular horizontal coverage.
6m 5-Element Yagi
Aluminum tube beam for 50–54 MHz. ~10 dBd gain on a manageable 12-foot boom. Excellent for weak-signal SSB, EME attempts, and working rare Sporadic-E openings at the edge of propagation.
2m J-Pole
The most popular VHF antenna build in amateur radio. Copper pipe, one afternoon, no ground plane needed. Omnidirectional, unity gain, 50Ω feed. Perfect for 2m FM and local repeater use.
2m Slim Jim
A folded J-pole variant with slightly lower angle of radiation than the standard J-pole — makes more of its gain at the horizon where it counts for repeater and simplex work. Built from 300-ohm twin-lead.
2m Colinear — 5/8 Wave Stack
A stacked collinear vertical delivering 3–5 dBd over a simple dipole with omnidirectional coverage. Built from coax or copper tubing. Excellent fixed-station antenna for 2m FM and digital modes.
2m 5-Element Yagi
Aluminum tubing beam for 144–148 MHz delivering ~10 dBd. Suitable for satellite (SO-50, AO-91), SSB weak-signal work, and EME first steps. NEC2-modeled design with gamma match feed.
1.25m (222 MHz) J-Pole
Copper pipe J-pole for the 222 MHz band — one of the least crowded VHF bands with a surprisingly active community. Simple construction identical to 2m J-pole but scaled for 222 MHz.
70cm J-Pole (440 MHz)
A compact copper pipe J-pole for the 70cm band. Used for FM repeaters, D-Star, DMR, System Fusion, and APRS. Often paired with a 2m J-pole on the same mast for dual-band coverage.
70cm 9-Element Yagi
A high-gain 70cm Yagi for satellite (AO-91, AO-92, SO-50), weak-signal SSB, and long-range repeater access. At 70cm, a 9-element Yagi fits on a 3-foot boom delivering ~13 dBd.
Dual-Band Satellite Array — 2m/70cm
Cross-Yagi antennas for 2m and 70cm mounted together for LEO satellite operation. Includes phasing harness for circular polarization to combat satellite spin fading. The standard serious satellite station setup.
33cm (902 MHz) Yagi
A Yagi for the 902–928 MHz band — one of the lesser-known but active weak-signal bands. Compact construction with PCB material elements. Used for long-distance tropo, grid expeditions, and microwave contests.
23cm (1296 MHz) Yagi
A precision-machined Yagi for 1296 MHz. Dimensional tolerances are critical at 23cm — construction accuracy becomes essential. Used for microwave contesting, EME, and long-range tropo propagation experiments.
23cm Dish Feed — EME
A feedhorn and matching network for illuminating a surplus satellite dish on 1296 MHz. The entry point to EME (moonbounce) on microwave bands — a dish of 6 feet or larger brings 23cm EME into reach.
NVIS Dipole — 40m and 80m
A deliberately low-mounted dipole (8–12 feet above ground) for NVIS regional propagation. High-angle radiation covers 0–600 miles reliably on 40m and 80m. Essential for emergency communication planning.
Attic Dipole — Stealth HF
An HF dipole installed inside an attic space for stealth operation. Covers planning, choosing the right bands for available span, managing RF in the shack, and working around building materials that affect performance.
Indoor Magnetic Loop — Apartment HF
A tabletop magnetic loop for apartment and condo operation where no outdoor antenna is possible. Covers 40m through 15m from inside a room. Includes safety guidance for high-Q capacitor voltage.
Beverage Receive Antenna
A long directional wire antenna (500–1000 feet) terminated at the far end and used exclusively for receive on 160m and 80m. Dramatically reduces noise and improves weak signal copying on the low bands.
KD9SV Pennant / Flag Loop
A compact terminated loop for receive-only use on 160m and 80m. The pennant and flag designs provide directional receive capability in a small physical footprint — popular with low-band DX operators.
Tools You Actually Need
For wire antenna builds (beginner to intermediate) the tool list is short and inexpensive:
- Wire cutters and diagonal pliers — cutting and stripping wire
- Soldering iron (25–40W) and rosin-core solder — feedpoint terminations
- Self-amalgamating tape — essential weatherproofing for all outdoor connections
- PVC electrical tape — UV protection layer over self-amalgamating tape
- Tape measure — accurate wire cutting
- Multimeter — continuity check before connecting to radio
- NanoVNA or antenna analyzer — finding resonance and trimming
For aluminum Yagi and UHF builds, add: hacksaw or tubing cutter, hand drill, deburring tool, and a vise. A drill press improves element hole accuracy but is not required.
NanoVNA setup guide →Calculating Wire Length
Every guide links to the appropriate calculator, but these are the fundamental formulas:
Always cut 3–5% longer than calculated and trim to resonance after installation. Height above ground, wire insulation, and nearby objects all shift the actual resonant frequency in ways that cannot be predicted before installation.
Open the antenna calculators →Wire and Materials Selection
- #14 AWG stranded CCS — best all-around choice for permanent HF wire antennas. Strong, low-stretch, good conductivity
- #14 AWG stranded bare copper — excellent conductivity, slightly less tensile strength than CCS
- #22–26 AWG magnet wire — lightweight for portable and SOTA builds where weight is critical
- PVC-insulated wire — adds ~2–3% electrical shortening due to dielectric effect — account for this when calculating
- Aluminum tubing (6061-T6) — standard for VHF/UHF Yagi elements. Strong, lightweight, machines cleanly
- Copper pipe (½" type M) — standard for J-poles and ground-mounted elements
- RG-8X coax — practical standard for most HF and VHF feedlines under 100 feet
- LMR-400 — for longer runs or microwave frequencies where loss matters
Weatherproofing — The Critical Step
Moisture at outdoor connections is the leading cause of antenna failure. A feedpoint that works perfectly at installation can develop high resistance within months without proper sealing.
- Apply self-amalgamating tape from below the connector upward — water runs off, not in
- Overlap each layer by 50% for a continuous seal with no gaps
- Add PVC electrical tape as an outer UV protection layer
- Apply Noalox or similar anti-oxidant to all aluminum-to-copper connections
- Use stainless steel hardware — zinc-plated corrodes rapidly outdoors
- Leave a drip loop in coax below the feedpoint
- Inspect all outdoor connections annually — UV, thermal cycling, and corrosion degrade even good weatherproofing over time
Building Your First HF Dipole
The most important antenna any HF operator can build — complete from wire cutting to verified resonance.
Calculate and Cut Wire
For 14.200 MHz: 468 ÷ 14.2 = 32.96 ft total. Cut two legs at 17 feet each — intentionally long. The extra length allows trimming to resonance after installation.
Build a Current Choke (1:1 Balun)
Wind 8–10 turns of RG-8X through an FT-240-31 toroid to create a current choke. This prevents RF from flowing on the coax shield outer surface — without it, SWR readings are unreliable and the feedline radiates.
Terminate the Feedpoint
Connect coax center conductor to one leg, braid to the other. Solder both connections — heat the wire first, then apply solder. Cold joints appear dull and grainy; good joints are shiny and flow completely around the wire.
Attach End Insulators and Rope
Secure end insulators to each wire tip. Attach UV-resistant Dacron rope to each insulator. Leave 12+ inches of rope between the insulator and support to prevent the support structure from detuning the element.
Raise the Antenna
Get the feedpoint as high as possible. An inverted-V with legs angled at 30–45° below horizontal needs only one center support and performs very well. Run coax downward with a drip loop before the support point.
Initial SWR Sweep
Connect a NanoVNA at the shack end. Sweep 13.5–15 MHz and find the frequency of minimum SWR — this is actual resonance. SWR at the dip should be 1.5:1 or better if the feedpoint assembly and choke are correct.
Trim to Target Frequency
Resonance below target = antenna too long — trim both legs equally in 2-inch increments. On 20m, removing 1 inch per side raises resonance ~10–15 kHz. Re-sweep after each trim at full installation height.
Weatherproof All Connections
Wrap every outdoor connection with self-amalgamating tape from below, overlapping 50% per layer, ending well above the coax entry. Add PVC electrical tape outer layer. Verify with a final SWR sweep — readings should be unchanged.
| Antenna | Wire / Material | Key Hardware | Approx Cost | Build Time | Guide |
|---|---|---|---|---|---|
| 20m Dipole | #14 AWG CCS, ~35 ft | FT-240-31 toroid, 2× insulators, Dacron rope | $20–$30 | 2–3 hrs | Guide → |
| 40m Dipole | #14 AWG CCS, ~70 ft | FT-240-31 toroid, 2× insulators, Dacron rope | $25–$35 | 2–3 hrs | Guide → |
| 80m Dipole | #14 AWG CCS, ~135 ft | FT-240-31 toroid, 2× insulators, Dacron rope | $35–$50 | 3–4 hrs | Guide → |
| EFHW 40m–10m | #22 AWG wire, ~35 ft | FT-240-43 toroid, 43pF cap, SO-239 chassis | $25–$45 | 4–6 hrs | Guide → |
| Fan Dipole 3-band | #14 AWG CCS, ~200 ft total | FT-240-31 toroid, multi-wire center, insulators | $45–$60 | 4–5 hrs | Guide → |
| OCFD | #14 AWG CCS, ~135 ft | 4:1 current balun, off-center feed connector | $50–$70 | 3–4 hrs | Guide → |
| 40m Delta Loop | #14 AWG CCS, ~140 ft | 4:1 balun or ladder line, 3× insulators | $55–$75 | Half day | Guide → |
| 40m Vertical + Radials | Aluminum tubing; #14 CCS radials | Ground spike, 16–32 radial wires ~33 ft each | $70–$100 | Full day | Guide → |
| HF Magnetic Loop | Copper pipe or RG-213 loop | Butterfly capacitor, coupling loop, SO-239 | $70–$110 | Weekend | Guide → |
| 10m Moxon | #14 AWG wire on PVC frame | PVC pipe, wire, center connector, 1:1 choke | $25–$40 | Half day | Guide → |
| 2m J-Pole | ½" copper pipe | Pipe fittings, SO-239, hose clamps | $12–$20 | 2 hrs | Guide → |
| 2m Slim Jim | 300Ω twin-lead, ~5 ft | SO-239, strain relief, mount hardware | $6–$12 | 1–2 hrs | Guide → |
| 2m 5-El Yagi | 3/8" aluminum tubing elements | 3/4" boom, U-bolts, gamma match, mast clamp | $80–$110 | Weekend | Guide → |
| 70cm J-Pole | ½" copper pipe | Pipe fittings, SO-239, hose clamps | $8–$15 | 1–2 hrs | Guide → |
| Dual-Band Sat Array | Aluminum tubing, 2m + 70cm Yagis | Cross-boom, phasing harness, mast rotator mount | $160–$220 | Weekend | Guide → |
| NVIS Dipole | #14 AWG CCS, per band length | FT-240-31 toroid, low supports (8–12 ft) | $25–$35 | 2 hrs | Guide → |
What is the best first antenna to build?
A half-wave dipole for 20m is the ideal first build — it requires only wire, coax, a current choke, and two support points. The construction process involves only basic soldering, cost is under $30, and build time is 2–3 hours. It performs excellently on 20m, and with an antenna tuner it also covers 40m, 15m, and 10m. Once you have built and tuned a dipole, every other antenna type makes more sense because you understand resonance, SWR, and feedpoint matching from hands-on experience.
20m dipole build guide →What is the difference between an EFHW and a G5RV?
An EFHW (end-fed half-wave) uses a 49:1 impedance transformer to feed a resonant wire at one end — it resonates on the fundamental and all harmonics with no tuner needed on covered bands. A G5RV uses a specific length of ladder line as a matching section to bring a 102-foot wire to a manageable SWR on multiple bands, but still typically requires a tuner on most bands. The ZS6BKW (improved G5RV) optimizes the matching section length for better no-tuner coverage. The EFHW is generally simpler to deploy and more portable; the G5RV/ZS6BKW offers more even coverage across a wider range.
ZS6BKW build guide →Why build a J-pole instead of just buying a vertical?
A homebrew J-pole costs $12–$20 in copper pipe and performs identically to commercial verticals selling for $60–$150. The J-pole needs no ground plane (unlike a quarter-wave vertical), presents a 50Ω feedpoint naturally, and is mechanically simple — solder five pipe joints and it is done. Building your own also means you understand exactly what it is and can repair it if damaged. The J-pole is one of the best return-on-investment builds in all of amateur radio.
2m J-pole build guide →Can I operate on the lesser-known bands like 33cm and 23cm?
Yes — the 33cm (902–928 MHz) and 23cm (1240–1300 MHz) bands have active communities, particularly for weak-signal SSB, microwave contesting, EME, and APRS experimentation. Both bands have lower activity than 2m and 70cm, which makes them attractive for grid-square hunters and those interested in long-distance propagation experiments. Antennas for these bands are small and relatively easy to build with precise fabrication. A 33cm Yagi with 10+ elements fits in your hand.
33cm Yagi guide →What is NVIS and why does it need a special antenna?
NVIS (Near Vertical Incidence Skywave) is an HF propagation mode where signals radiate nearly straight up, reflect off the ionosphere, and return to earth covering roughly 0–600 miles. It is essential for regional emergency communication when ground-wave range is insufficient. Standard HF antennas optimized for DX radiate at low angles, which is wrong for NVIS — too little energy goes straight up. A NVIS antenna is simply a dipole mounted very low (8–12 feet above ground) so that ground reflection reinforces high-angle radiation. No special materials are needed — just a normal dipole at intentionally low height.
NVIS dipole guide →Is a magnetic loop antenna actually worth building?
For operators in apartments, condos, or HOA-restricted properties where no outdoor antenna is possible, a magnetic loop is genuinely worth building. It is significantly less efficient than a full-size wire antenna — typically 10–20 dB less gain — but it can make real contacts on HF from inside a room, which a dipole cannot. The key variables are the quality of the main loop conductor (larger diameter = lower loss), the quality of the tuning capacitor (higher Q = better efficiency), and the tightness of all connections. A well-built magnetic loop using copper pipe and a butterfly capacitor performs noticeably better than commercial small-loop products at the same price.
HF magnetic loop guide →