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SFI 128
SN 73
A 6
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Updated 23:30 UTC HamQSL · N0NBH
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Build a 60 Meter Vertical Antenna

The 60m quarter-wave vertical brings this family's reliable low-angle performance to the US's unusual 5-channel allocation. At roughly 44 feet tall — closer in scale to the 40m vertical than to any of the shorter builds on this site — it's a three-section telescoping build. Like the 60m dipole, this antenna is governed by channelized frequencies, USB-only operation, and a power/gain-relative-to-dipole rule rather than a simple tunable range. This guide covers the complete build from element sizing through radial installation, feedpoint assembly, and final tuning across all 5 channels.

43.68 ftElement length (Channel 3, 5357.0 kHz)
~35–50 ΩFeedpoint impedance (with radials)
~16°Low-angle takeoff for DX
~$90Typical build cost
⚠ Regulatory note: channelized band, USB only, power/gain limits (US): As with the 60m dipole on this site, US amateurs operate on 5 fixed channels (5330.5, 5346.5, 5357.0, 5371.5, and 5403.5 kHz), USB voice plus certain authorized data modes, at a maximum of 100 watts PEP effective radiated power relative to a half-wave dipole. Because a quarter-wave vertical over a good ground system has modest gain relative to a dipole, some administrations require a small power reduction to stay within the ERP limit — check current FCC guidance for the exact adjustment expected for a vertical versus a plain dipole.

Quarter-Wave Vertical Fundamentals on the 5 Channels

Quarter-wave element length: Length (ft) = 234 / f(MHz) Channel 1 (5330.5 kHz): 234 / 5.3305 = 43.90 ft Channel 2 (5346.5 kHz): 234 / 5.3465 = 43.77 ft Channel 3 (5357.0 kHz): 234 / 5.3570 = 43.68 ft (design center — recommended) Channel 4 (5371.5 kHz): 234 / 5.3715 = 43.56 ft Channel 5 (5403.5 kHz): 234 / 5.4035 = 43.30 ft Starting length recommendation: Cut to 45 ft (13.72 m) — trim to resonance. Extra length costs nothing; too-short needs splicing.

As with the 60m dipole, Channel 3 is the practical design center — a vertical cut here shows the most balanced SWR across all 5 channels.

60m vs 40m Vertical — Key Differences

  • Element is slightly shorter: 43.68 ft vs 40m's 32.7 ft — actually longer than 40m, closer in scale to a scaled-down 80m vertical, requiring the same three-section telescoping approach as the taller builds in this family.
  • Channelized, not tunable: unlike every other vertical on this site, there's no "choose your target frequency" decision — you operate on one of 5 fixed channels.
  • USB voice plus limited data modes: not the full mode set available on most other HF bands.
  • Power/gain rule: 100W PEP ERP relative to a dipole, requiring awareness of your antenna's gain (see callout above).
  • Regional/NVIS behavior similar to 80m: reliable daytime and nighttime regional coverage, popular for emergency communications nets.

Radiation Pattern and Regional/DX Performance

60m vertical radiation pattern (good ground): Maximum radiation: ~15–19° elevation angle (low-angle — useful for longer-distance contacts) Null: straight up (90°) 60m dipole at 35-45 ft (~0.2-0.25λ height): Maximum radiation: ~50-60° elevation angle (high-angle — good for NVIS/regional coverage)

As on 80m, the vertical favors longer-distance and DX-style contacts, while a low dipole favors NVIS-style regional coverage — many stations that operate 60m for emergency nets prefer the low dipole/NVIS approach specifically for its regional reach, while this vertical suits stations chasing longer contacts on the band.

Element Construction Options

  • Three-section telescoping aluminum: a 1.25-inch OD lower section (15 ft), 1.0-inch OD middle section (15 ft), and 0.75-inch OD upper section (15 ft), overlapped 6 inches at each joint, gives the working length. Self-supporting in moderate wind with a solid base mount.
  • Fiberglass fishing pole with wire: a 13-meter (43-foot) telescoping fishing pole with #14 AWG copper wire taped along the outside — a lighter-weight alternative to aluminum tubing at this height.
  • Wire on a rope or existing support: a wire hanging from a tall tree branch or tower leg, pulled taut with a weight at the bottom — requires an existing support at least 44 feet tall.
Channel Frequency Element length (ft) Element length (m) Notes
Channel 15330.5 kHz43.90 ft13.38 mLowest of the 5 channels
Channel 25346.5 kHz43.77 ft13.34 m
Channel 35357.0 kHz43.68 ft13.32 mRecommended design center — most commonly used
Channel 45371.5 kHz43.56 ft13.28 m
Channel 55403.5 kHz43.30 ft13.20 mHighest of the 5 channels — most SWR rise from a Channel 3 cut

Vertical 60m Calculator

Materials for a ground-mounted 60m quarter-wave vertical with 16-radial ground plane

📏1.25-inch OD 6061-T6 aluminum tubing, 15 ftLower element section
📏1.0-inch OD 6061-T6 aluminum tubing, 15 ftMiddle element section — telescopes into lower
📏0.75-inch OD 6061-T6 aluminum tubing, 15 ftUpper element section — telescopes into middle
🔩Stainless steel hose clamps, 6 piecesSecuring telescoping joints — 2 per joint
🏗️Antenna base mount / ground spikeDX Engineering, Hustler, or homebrew PVC sleeve in concrete
🔩SO-239 chassis connector (feedpoint)Mounts at element base for coax connection
🌀RG-8X coax, length to reach radioStandard RG-8X is adequate given the 100W ERP power ceiling
📡#14 AWG bare copper wire, 720 ftFor 16 radials at ~45 ft each
🔘Copper radial plate or bus bar, 1 pieceCentral hub connecting all radials and coax shield
🔩Stainless steel ring terminals, 20 piecesFor radial wire connections at hub
🔮FT-240-31 toroid for current chokeAt feedpoint — prevents coax shield from radiating
📡NanoVNAFor resonance measurement and full-channel SWR check
🪛Soldering iron, rosin core solder, self-amalgamating tapeFor feedpoint connections and weatherproofing
🔧Hacksaw or tubing cutter, file, drillFor cutting and joining aluminum tubing sections
🔩Noalox anti-oxidant compoundFor each telescoping joint and the feedpoint bracket

What the NanoVNA Will Show

Expected feedpoint impedance vs radial system: Perfect ground (theoretical): ~36 Ω 4 on-ground radials: ~55 Ω 8 on-ground radials: ~46 Ω 16 on-ground radials: ~41 Ω 4 elevated radials (λ/4 = 43.68 ft high): ~35 Ω 60m-specific note: Check SWR at each of the 5 channel frequencies individually rather than sweeping a continuous range — the channels span only 73 kHz total, so a Channel 3 cut keeps all 5 within reasonable SWR.

Ground-Mount and ERP Considerations

  • 4 elevated radials: a viable alternative at 43.68 ft height each, though on-ground radials are more common given this antenna's typical fixed-station use.
  • Power/gain awareness: because a vertical with a good radial system has modest gain over a plain dipole, confirm your effective radiated power stays within the 100W ERP limit — this may mean running slightly under 100W transmitter output depending on your specific system's measured or estimated gain.
  • Wind load: a 45-foot three-section aluminum element carries significant wind load — use a solid base mount with guy wires in exposed locations.
Finished 60m quarter-wave vertical antenna — telescoping aluminum tubing element on a base mount with 16 ground radials and SO-239 feedpoint connector

Building the 60m Quarter-Wave Vertical

This guide builds a ground-mounted three-section telescoping aluminum vertical with a 16-radial on-ground system, cut for Channel 3 (5357.0 kHz).

1

Select the Site and Plan Radial Layout

Choose a site with at least 45 feet of clear ground in all directions. Keep the element clear of metal structures within 10 feet, and route the coax to exit the feedpoint at 90° for the first 15–20 feet.

2

Cut and Prepare the Aluminum Tubing Sections

Cut all three aluminum sections to length and deburr all cut ends.

Section lengths for Channel 3 (5357.0 kHz) target: Lower section (1.25" OD): 15 ft (180 inches) Middle section (1.00" OD): 15 ft (180 inches) Upper section (0.75" OD): 15 ft (180 inches) Overlap at each joint: 6 inches (2 joints) Total assembled length: ~44 ft — trim to resonance

Drill a 3/16-inch hole through both walls at each joint overlap midpoint for a locking bolt, and apply Noalox anti-oxidant compound before assembly.

3

Install the Base Mount and Feedpoint Assembly

Install a solid base mount — a commercial ground spike mount or a PVC sleeve set in a concrete footing at least 18 inches deep. Mount the SO-239 with the center pin to the element and shell to the radial hub.

Insulate the element base from earth: Verify electrical isolation with a multimeter.
4

Install the Radial Hub and Run 16 Radials

Cut 16 radials of #14 AWG copper at 45 feet each, bolt them to the hub at 22.5° intervals, and stake flat to the ground every 6–8 feet.

5

Raise the Element and Connect Coax

Assemble the three telescoping sections, slide the element into the base mount, and secure it — a second person and a gin pole are recommended at this height. Connect the coax, install a current choke (7–8 turns of coax through an FT-240-31 toroid), and weatherproof the connection.

Check overhead clearance before raising: A 44-foot element contacting a power line is a lethal hazard. Verify clearance in all directions first.
6

Initial SWR Measurement

Sweep 5.0–5.6 MHz with the NanoVNA.

Expected initial readings (44 ft element): SWR minimum location: ~5.20 – 5.25 MHz (element cut long — resonance is below target) SWR at minimum: 1.2 – 2.0:1
7

Trim to Resonance

Trim calculation: ΔL = L_now × (1 − f_now / f_target) Example: f_now = 5.22 MHz f_target = 5.357 MHz L_now = 528 inches (44 ft) ΔL = 528 × (1 − 5.22/5.357) = 528 × 0.0256 = 13.5 inches Trim from the top section in 2-inch increments initially, switching to 1-inch as you approach target. Re-raise and re-measure after every trim.
8

Verify SWR at All 5 Channels and Document

Typical 60m vertical SWR readings (tuned to Channel 3, 5357.0 kHz, 16 on-ground radials): Channel 1 (5330.5 kHz): ~1.3:1 Channel 2 (5346.5 kHz): ~1.1:1 Channel 3 (5357.0 kHz): ~1.1:1 ← design center Channel 4 (5371.5 kHz): ~1.2:1 Channel 5 (5403.5 kHz): ~1.6:1 (expected — farthest from center)

Weatherproof all connections and install a ground rod bonded to the radial hub. Confirm your radio is set for USB voice (or an authorized data mode) and that your effective radiated power stays within the 100W ERP-relative-to-dipole limit.

4 Elevated Radials as an Alternative

Where ground space is limited, 4 elevated radials at 43.68 ft each perform nearly as well as a full on-ground system.

Emergency Communications Use

Like the 60m dipole, this vertical's regional daytime and nighttime coverage make it useful for emergency and traffic nets — though many net operations specifically favor a low NVIS-style dipole for maximum regional coverage rather than a low-angle vertical. Consider your primary use case (DX-style contacts vs. regional net participation) when choosing between this vertical and a low 60m dipole.

Symptom Most likely cause Diagnosis Fix
No SWR dip visible across 5.0–5.6 MHzFeedpoint connection fault or coax polarity reversedCheck DC resistance from coax center to shieldVerify center pin to element, shield to radial hub
SWR minimum broad or highToo few radialsCount radial connections at the hubAdd radials toward 16
Resonance well below Channel 1Element too longMeasure element lengthTrim from the top section
Resonance well above Channel 5Element too shortMeasure element lengthSplice a short extension onto the tip
Telescoping joints loosen in windHose clamps insufficient for this element's wind loadCheck joint tightness after windy periodsAdd guy wires; re-tighten clamps and verify locking bolts are installed
Uncertain whether ERP compliance is metVertical's gain over a dipole not accounted forEstimate system gain relative to a reference dipoleReduce transmitter power modestly to stay within the 100W ERP limit; consult current FCC guidance

Why is this vertical taller than the 40m one?

60m's lower frequency (around 5.35 MHz vs 40m's 7.15 MHz) requires a longer quarter-wave element — 43.68 ft vs 32.7 ft — even though 60m is a "higher" band number in casual usage, its actual frequency is lower.

Do I need to reduce power on a vertical here?

Possibly a small amount — a vertical with a good radial system has modest gain over a plain dipole, and the 100W limit is relative to dipole ERP. A plain 60m dipole needs no adjustment; this vertical may need a slight reduction depending on your specific system.

Should I use a vertical or a low dipole for 60m emergency nets?

A low NVIS-style dipole is generally preferred for regional net coverage due to its high-angle radiation. This vertical suits operators more focused on longer-distance contacts on the band.

Why cut for Channel 3 instead of another channel?

Channel 3 (5357.0 kHz) sits roughly central among the five channels, giving the most balanced SWR performance across all of them.

How many radials do I need?

More is better, with the biggest gains in the first 8 — 16 is a solid target given this element's height and typical fixed-station installation.

What modes can I use on this antenna?

Upper sideband voice plus certain FCC-authorized digital modes on specific channels — the same rules that apply to the 60m dipole on this site.


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