ECO Antenne GP4 10-15-20-40 m
1/4-wave vertical antenna for 4 HF bands without coil changes, 1000 W PEP
The ECO GP4 is a 1/4-wave vertical antenna for the 40, 20, 15 and 10 metre bands (7 / 14 / 21 / 28–29 MHz): you change band without replacing or adjusting coils.
Product description
It is designed for quick, long-lasting installations, on the ground or on the roof, and is 5.65 m tall.
The radial system is essential: you need at least 7 radials laid out in a fan, for example 6 of 2.5 m and 1 of 5 m, ideally between 0.3 and 0.5 m above ground. On a balcony, the metal railing can be used as a ground plane. Moving or slightly shortening the radials fine-tunes the SWR, which is below 1.5 at the resonance points.
Key features
40, 20, 15 and 10 metres.
Switch directly from one band to another.
Also suitable for use with an amplifier.
Specifications
| Bands | 7 / 14 / 21 / 28–29 MHz |
| Type | 1/4 λ vertical |
| Maximum power | 1,000 W PEP |
| SWR | < 1.5 at resonance points |
| Height | 5.65 m |
| Weight | 2.3 kg |
| Recommended radials | at least 7 (6 × 2.5 m + 1 × 5 m) |
HamRadioShop | HF antennas
