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6kW VertiCore ¼λ – 5/8λ 4M 6M 10M 12M 15M 17M 20M

6kW VertiCore ¼λ – 5/8λ 4M 6M 10M 12M 15M 17M 20M

€367,00 EUR
€367,00 EUR
Sale Sold out
Tax included.
High Power 1:1 Balun with PL Socket
Pre Tuned Aluminium Radiator + 4 Tuned Radials
Disclaimer: All RF.Guru products are handmade. Fulfillment may vary depending on order volume. Please allow 1–3 weeks for assembly and shipping.

VertiCore is a purpose-built monoband vertical series with clean 50 Ω behavior and integrated elevated 45° quarter-wave radials at the feedpoint. Choose 5/8 λ versions for 4 m, 6 m, 10 m, 12 m or 1/4 λ versions for 15 m, 17 m, 20 m to unlock efficient, low-angle radiation without lossy traps or gimmicks.

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Specs at a Glance

Available Geometries 5/8 λ: 4 m, 6 m, 10 m, 12 m  |  1/4 λ: 15 m, 17 m, 20 m
Feedpoint 50 Ω with integrated elevated 45° ¼ λ radials (four-radial hub)
Radiator Marine-grade aluminum, no loading coils or traps
Hardware RVS INOX 316 stainless fasteners and fittings
Power Handling High-duty SSB/CW; digital modes depend on duty cycle and band (installation dependent)
Mounting Standard mast interface; install with the radial plane elevated and symmetrical

Quick Comparison — 5/8 λ vs 1/4 λ

Aspect 5/8 λ (4/6/10/12 m) 1/4 λ (15/17/20 m)
Pattern Two-lobe elevation with a strong low-angle DX lobe Single clean lobe; stable low angles with elevated radials
Matching Near 50 Ω with correct radial geometry Direct 50 Ω with elevated ¼ λ radials
Use Case DX and Es on higher bands (10/12 m, 6/4 m) Reliable monoband performance on 15/17/20 m

What’s Included

  • VertiCore monoband radiator (band-specific 1/4 λ or 5/8 λ length)
  • Integrated 4-arm radial hub with 45° elevated ¼ λ radials
  • RVS INOX 316 stainless hardware set
  • Integrated 6kW 1:1 BALUN
  • Feedpoint assembly aligned with the radial plane

Operating Bands & Typical Angles

Band Geometry Indicative Takeoff Angle*
20 m 1/4 λ ~22–24°
17 m 1/4 λ ~20–22°
15 m 1/4 λ ~18–20°
12 m 5/8 λ ~14–16°
10 m 5/8 λ ~12–14°
6 m 5/8 λ ~10–12°
4 m 5/8 λ ~8–10°

*Angles are indicative for elevated 45° ¼ λ radials in average ground; surroundings and height will shift results.

Height & Radial Guidance

  • Feedpoint height: Set so the 45° radial tips clear surfaces by ≥ 0.5 m. As a rule-of-thumb, Hmin ≈ 0.707·(¼ λ) + 0.5 m.
  • Symmetry matters: Route coax at right angles away from the radial plane initially.

Maintenance

Apply AL-1100 aluminum paste on all aluminum-to-aluminum interfaces during assembly to prevent galvanic corrosion and maintain low contact resistance. In coastal/polluted environments, re-apply every 2–3 years during inspection.

Notes on SWR & Real-World Installs

SWR and bandwidth depend on feedpoint height, radial symmetry, soil, and nearby structures. Measure at the feedpoint where possible; trim height or radial length to center resonance.

Mini-FAQ

  • Which VertiCore is best for DX? — The 5/8 λ versions (10/12/6/4 m) emphasize a stronger low-angle lobe; the 1/4 λ models excel on 15/17/20 m with clean matching.
  • Do I need a tuner? — No. VertiCore is monoband and designed for ~50 Ω when installed per guidance.
  • Coils or stubs inside? — None. Pure-length radiators and elevated radials keep losses low and tuning predictable.

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