HyEndfed Antennas

Hy End Fed Antennas from the Netherlands is run by Rob, PA3EKE and Ron, PA3RK. The company provides end-fed wire antennas either as mono-band or multi-band. The company's name is meant to emphasise the high quality standards ('Hy End') as well as the concept of end-fed half-wave antenna ('End Fed').

Hy End Fed Antennas

Hy End Fed antennas are half-wave antennas that basically work similar to a Zepp or Fuchs antenna. Minimum handling and a relatively high efficiency.

The problem with a lot of portable antennas and antennas in confined spaces is the low efficiency of those antennas. Greatly shortened verticals need a lot of radials for higher efficiency, a dipole would need two anchor points and a heavy feed cable in the centre. Usually this is not possible when going on holiday or with only little space to spare.

In this case a well known antenna concept like the half-wave antenna helps out. Half-wave antennas can be end-fed, because of that the heavy feed cable in the centre is not necessary and the antennas are easier to install. This way only a light fishing rod on the balcony or a suitable tree next to the house is needed. The greater length (λ/2 instead λ/4) increases the efficiency considerably. Single antennas for lower bands use an extension coil.

Another trick by HyEndFed antennas is the transformer (UnUn) with a relatively high transfer ratio of 1:50. Because of that the high impedance of an end-fed half-wave emitter is transformed down to a level with which built-in tuners work well. Sometimes no tuner is needed at all and a counter balance is not necessary either. This is another reason for the antenna design, especially on holiday or with little space. Also, the transformer can cover higher voltage rather easily making HyEndFed antennas capable of higher power.

All power ratings in Watt PEP. All larger antennas have a PL-connector, the QRP and portable version have BNC. There are isolators at balun and at the end of the wire for installation. It may be possible that a guy rope is needed in addition.

Model change 2015
The balun casing of the 'big' multi band antennas (3-band to 5-band, 200W) has a ventilation vent now.
The vent ensures that the internal pressure in the case is equal to the external pressure and thus prevents water condensation due to barometric variations (air pressure fluctuations).
The built-in semi-permeable membrane allows gases and water vapor to diffuse, but prevents intrusion of water and solids like dirt and insects.

Download: Review from Funkamateur 1/2013 (PDF, DE, 1.1MB, Reprint with friendly permission from the publisher)

HyEndfed Antennes Multibandes

HyEndFed Antennes Multibande
Réference Nº. Type Longuer Poids Max. Puissance Connecteur Largeur de bande TOS Prix
11345.8AL Multiband
80, 40, (30), 20, 17, 15, 12, 10m
40.0 m 1,4 kg 200 W PL 80m ~ 300 kHz ≤ 1:1.8 215.00 € Acheter
40m ~ 300 kHz ≤ 1:1.8
30m ~ 100 kHz ≤ 1:2.5
20m ~ 350 kHz ≤ 1:2.0
17m ~ 200 kHz ≤ 1:2.0
15m ~ 450 kHz ≤ 1:1.8
12m ~ 200 kHz ≤ 1:1.8
10m ~ 500 kHz ≤ 1:1.8
11345.84251 Multiband
80, 40, 20, 15, 10m
23.0 m 770 g 200 W PL 80m ~ 100 kHz ≤ 1:2.0 180.00 € Acheter
40m ~ 200 kHz ≤ 1:1.5
20m ~ 300 kHz ≤ 1:2.0
15m ~ 450 kHz ≤ 1:1.8
10m ~ 1'000 kHz ≤ 1:2.0
11345.4251 Multiband
40, 20, (15), 10m
20.0 m 624g 200 W PL 40m ~ 200 kHz ≤ 1:1.5 165.00 € Acheter
20m ~ 300 kHz ≤ 1:2.0
15m ~ 450 kHz ≤ 1:3.0
10m ~ 1'000 kHz ≤ 1:2.0
11346.4251H Multiband
40, 20, (15), 10m
Ultralight
20.0 m 187g 100 W BNC 40m ~ 200 kHz ≤ 1:1.5 110.00 € Acheter
Available again from January 2017
20m ~ 300 kHz ≤ 1:2.0
15m ~ 450 kHz ≤ 1:3.0
10m ~ 1'000 kHz ≤ 1:2.0
11345.421 Multiband
40, 20, 10m
11,85 m 620 g 200 W PL 40m ~ 100 kHz ≤ 1:2.0 165.00 € Acheter
20m ~ 300 kHz ≤ 1:1.5
10m ~ 500 kHz ≤ 1:1.5
11345.421M Multiband
40, 20, 10m
portable
11,85 m 280 g 100 W BNC 40m ~ 100 kHz ≤ 1:2.0 104.00 € Acheter
20m ~ 300 kHz ≤ 1:1.5
10m ~ 500 kHz ≤ 1:1.5

HyEndfed Antennes Monobandes

HyEndFed Antenne Monobande
Réference Nº. Type Longuer Poids Max. Puissance Connecteur Largeur de bande TOS Prix
11347.40 Monoband 40m 20.0 m 408 g 300 W PL ~ 200 kHz ≤ 1:2.0 89.00 € Acheter
Available again from January 2017
11347.30 Monoband 30m 14.1 m 330 g 300 W PL ~ 200 kHz ≤ 1:1.5 89.00 € Acheter
11347.20 Monoband 20m 10.0 m 275 g 300 W PL ~ 300 kHz ≤ 1:1.5 83.00 € Acheter
11347.20H Monoband 20m 10.0 m FIXME 4000 W PL ~ 300 kHz ≤ 1:1.5 224.00 € Acheter
11347.17 Monoband 17m 7.87 m 250 g 300 W PL ~ 400 kHz ≤ 1:1.5 83.00 € Acheter
11347.15 Monoband 15m 6.72 m 243 g 300 W PL ~ 400 kHz ≤ 1:1.5 83.00 € Acheter
11347.11 Monoband 11m 5.25 m 230 g 300 W PL ~ 700 kHz ≤ 1:1.5 83.00 € Acheter
11347.10 Monoband 10m 5.0 m 225 g 300 W PL ~ 700 kHz ≤ 1:1.5 83.00 € Acheter

Portable bag Portable bag

Following antennas come in a small bag:

  • 11345.421M
  • 11346.4251
  • 11346.4251H

Optional Accessories for HyEndfed antennas

Réference
23100 3 mm Dyneema guy rope, breaking load 400kg, per meter 1.50 € Acheter
23102 5 mm PES Abspannseil, breaking load 420kg, per meter 0.50 € Acheter
23105.30 light PES guy rope, black, breaking load 150kg, 30m coil 15.00 € Acheter
23060 3 mm Simplex clamp, stainless steel 1.10 € Acheter
23060.D 3 mm Duplex clamp, stainless steel 1.99 € Acheter
23020.03 rope thimble 3mm, zinc-coated 0.50 € Acheter
23025.03 rope clamp 3mm, zinc-coated 0.50 € Acheter
Info frais de port

Compte-rendu par DK5EW

OM Erwin, DK5EW a un compte-rendu interessante sur son site internet, concernant l'antenne HyEndfed 11345.84251 (an anglais). Merci à DK5EW.