Cobweb 7 20-4m

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Multiband cobweb antenna works on 7 HF bands and up to 1000w/800w SSB

Bands are 14, 18, 21, 24, 28, 50, 70MHz

This antenna has sides of the square 2.65 x 2.65 m, and is very useful where space is limited.

This antenna works well as an antenna for your base but equally well as portable for holidays and field work due to it’s folding boom arms.

It’s unique design allows this antenna to be quickly and easily set up within a few minutes.

It’s design is very strong and robust, and is resistant to strong winds.

The antenna is contructed from glass fibre rods, aluminum, stainless steel and galvanized steel and has a sealed connector box resistant to rain and UV rays to keep the balun and connections from the elements.

The antenna works well on DX and as a QRP station.

It is pre-tuned to different bands at a height of 4 metres above the ground. Raising the antenna above 4m will generally see SWR decrease.

Bandwidth on 6 and 10m may require the use of an ATU to cover more of the band..

This antenna is omni-directionally so you do not need a rotator.

It is made up of folded half-wave dipoles for 14,18,21,24,28,50,70 MHz

Polarisation is horizontal and is naturally resistant to some electrical interference and static.

Large system efficiency to 95%.

Technical details

Impedance — 50 Ohm

Socket — UC1 / SO239

Horizontally polarised

Radiation — Omni-Directional

Max power supplied — 1000/800 Watt SSB

Antenna gain on all bands 5 dBi

Minimum SWR 1.1: 1

Can accommodate any mast up to 50mm in diameter.

Weight 4.2 kg and turning radius 185 cm

Square sides of 2.6

Informacje dodatkowe

Waga 5 kg
Wymiary 140 × 17 × 17 cm

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