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NEW - 4kW Inverted L Endfed Halfwave Mono Band for 40M

NEW - Carbon fibre whips for 4M 6M 10M and 20M band!

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My TX Antenna Strategy from 160 m to 4 m

Related Reading
Low-band EFHW Inverted-L systems: what’s really happening at the feedpoint and return path Why Inverted-L antennas beat ground verticals on the top bands If you had to pick one QRO antenna: how to think in “station strategy” Raised vertical height for DX: the practical sweet spots

When people ask what my go-to antennas are for each band, I do not start from giant arrays, towers everywhere, or highly complex systems. Even if space is not a concern, I still prefer antennas that are easy to deploy, electrically effective, and strategically complementary.

That last point matters most.

No single antenna does everything well. A station optimized for low-angle DX will never be ideal for NVIS, short skip, or local work. And a station built only for high-angle regional work will leave performance on the table for long-haul DX.

A layered transmit strategy

I do not try to force one antenna to cover all jobs. I build a layered TX strategy:

  • Use one family of antennas for low-angle DX.
  • Use another family for higher-angle local and regional work.
  • Choose each antenna by what it does best on that specific band.

(This is pure TX thinking. For RX, I use a different strategy entirely, but that’s for another article.)

The DX side: simple antennas that launch low

For low-angle DX, I want antennas that are mechanically realistic, efficient in the real world, and that do not demand huge complexity to get good results. That is why my DX-oriented lineup looks like this:

  • 160 m: EFHW Inverted-L
  • 80 m: EFHW Inverted-L
  • 40 m: EFHW Inverted-L
  • 30 m: EFHW Inverted-L
  • 20 m: raised 1/4-wave vertical
  • 17 m: raised EFHW half-wave with LC circuit
  • 15 m: raised EFHW half-wave with LC circuit
  • 12 m: 5/8-wave vertical
  • 10 m: 5/8-wave vertical
  • 6 m: 5/8-wave vertical
  • 4 m: 5/8-wave vertical

At first glance this may look like a mixed collection of antennas, but it is very deliberate: it is one consistent low-angle strategy that changes antenna family only when that change makes the system simpler or more effective.

The core idea: choose antennas by radiation angle and practicality, not by slogans.
Low bands: Inverted-L systems for real-world low-angle performance without extreme infrastructure.
Mid bands: the simplest antenna that launches clean low-angle DX efficiently.
Higher bands: 5/8-wave verticals when an omnidirectional low-angle radiator is the goal.

Why the low bands are Inverted-L territory

On 160 m and 80 m, the Inverted-L is one of the most practical and effective DX transmit antennas you can deploy without moving into a completely different level of station complexity. It gives you a strong vertical component for low-angle radiation, while the horizontal section adds flexibility and makes the antenna far easier to fit than a true full-size vertical.

In this approach, it is not the generic “49:1 EFHW and hope for the best” story. These low-band Inverted-L systems are built as dedicated RF systems: the transformer ratio fits the real installed impedance, the return path is short and defined, and choking keeps the feedline from becoming an uncontrolled part of the antenna.

(The deeper transformer and return-path discussion for 160/80 and 80/40 deserves its own technical section. The short version: these are not “magic no-counterpoise wires” ... they are well-defined transmitting systems.)

Why 40 m and 30 m still fit the same strategy

On 40 m and 30 m, I still like the EFHW Inverted-L approach because it keeps the same philosophy: low-angle DX performance from the vertical part of the antenna, but with more versatility than a purely vertical solution.

This is especially true on 40 m. The Inverted-L remains attractive because it is not only a DX antenna: it still offers useful higher-angle radiation, so it can cover regional work better than a pure low-angle vertical. That makes 40 m a “bridge band” where this antenna choice stays strategically strong.

Why 20 m is where the raised quarter-wave starts to shine

By the time we reach 20 m, a raised 1/4-wave vertical becomes a very logical choice. The antenna is physically manageable, easy to install properly, and excellent for low-angle omnidirectional DX. It is simple, predictable, and does exactly what 20 meters is famous for: launching energy efficiently toward long-distance paths.

Why 17 m and 15 m move to raised EFHW half-waves

For 17 m and 15 m, I like a raised EFHW half-wave with an LC circuit and a controlled return arrangement in the feed system. These bands are ideal for that solution: compact antennas, easy to elevate cleanly, and strong TX performance without needing a large radial system.

(The detailed feed and return-path discussion belongs in a deeper technical section. In this overview, the key point is that these antennas are easy to execute well on these bands.)

Why 12 m, 10 m, 6 m, and 4 m move to 5/8-wave verticals

From 12 m upward, I move to 5/8-wave verticals. On these bands, the 5/8-wave vertical is an elegant way to get a very useful low-angle tendency from a relatively straightforward omnidirectional antenna. It stays simple, it stays practical, and it matches the operating style of these higher bands very well.

For 6 m and 4 m, a 5/8-wave is still a solid choice when the goal is a strong omnidirectional TX antenna with a low-angle tendency. If the discussion shifts to extreme weak-signal DX, then directional antennas become another category entirely ... but within the simple omnidirectional strategy, the 5/8-wave remains a great fit.

The other half of the station: NVIS, short skip, and local work

For local work, I do not try to force the DX antennas to do a job they are not optimized for. I switch antenna families. For regional coverage, NVIS, and short skip, I prefer:

  • a multiband DeltaLoop like the DeltaRex
  • or, if I have the space, monoband delta loops for each band (like our SolidDelta)

This is the correct complement to the low-angle DX system. A low-angle DX antenna naturally creates distance ... that’s the point. But it also means nearby coverage is not its strongest job. For that, I want antennas that favor higher-angle radiation, and loops do that very well.

Why DeltaLoops make sense

DeltaLoops are strong choices because they are efficient, versatile, and very good at covering the “closer in” work that DX-oriented Inverted-Ls and verticals do not handle as naturally. The DeltaRex is especially attractive because it behaves as a half-wave antenna on 40 m and a full-wave antenna on 20 m, which makes it a practical dual-purpose solution.

For 17 m, 15 m, 12 m, and 10 m, if I want better local or short-skip performance, I would rather use a monoband SolidDelta. Once you move to monoband loops, the behavior becomes cleaner and more predictable ... which is exactly what you want when building a station around deliberate operating goals instead of compromise.

Why this is a solid overall strategy

The strength of this approach is not that one antenna does everything. The strength is that the whole station works as a system:

  • Inverted-L, vertical, and EFHW half-wave systems for low-angle DX.
  • DeltaRex, and monoband SolidDelta's for higher-angle local, regional, NVIS, and short skip work.

That gives full transmit coverage across the bands with antennas that are still realistic to build, easy to deploy compared to large array systems, and highly effective in the roles they are chosen for.

The real point is simple: use the right antenna for the right radiation angle, on the right band, for the right job.

(Later, we can go deeper into the technical side of the 160/80 and 80/40 Inverted-L systems ... because that is where many people still misunderstand what is really happening at the feedpoint and in the return path.)

Mini-FAQ

  • Is this “one antenna per band”? ... No. It’s one strategy across bands, with different antenna families chosen for specific radiation-angle goals.
  • Why not use one multiband antenna for everything? ... Because “everything” usually means compromise. Layering antenna families lets each antenna do the job it’s best at.
  • Are EFHW Inverted-Ls really “no counterpoise” antennas? ... No. They still need a defined return path ... the difference is that the system can be engineered so the return is controlled instead of accidental.
  • Why switch to a raised quarter-wave on 20 m? ... At 20 m it becomes mechanically easy, electrically predictable, and very good for low-angle omnidirectional DX.
  • Why use LC-matched EFHW half-waves on 17 m and 15 m? ... Because those bands are compact and easy to elevate cleanly, and an LC approach can be tuned to the real installed impedance without needing a large radial field.
  • Why do loops show up in the “local/NVIS” side? ... Loops often provide stronger higher-angle radiation in practical installs, which is exactly what you want for regional and short-skip coverage.

Interested in more technical content? Subscribe to our updates for deep-dive RF articles and lab notes.

Questions or experiences to share? Feel free to contact RF.Guru.

Written by Joeri Van Dooren, ON6URE – RF engineer, antenna designer, and founder of RF.Guru, specializing in high-performance HF/VHF antennas and RF components.

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