Antenna - De website van PA3EGH

Radio, telegraphy, morse keys, etc.

Antenna etc.

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80 / 40 meter dipole antenna. Total 24 meter long. 10.50 meters of wire than the coil and another piece of 1.5 meters. 120 uH coil 140 windings on 32 mm diameter pvc pipe

SWR 40 / 80 Meter dipool.

Trap dipole 80 and 40 meters. SWR 40 / 80 m dipool.

160 meters vertical. 14 meters long 150 µH coil at 8 meters from feeding point.

160 meters vertical. 14 meters long 150 µH coil at 8 meters from feeding point.

SWR 160 meters vertical. 14 meters long 150 µH coil at 8 meters from feeding point.

160 meters vertical. 14 meters long 150 µH coil at 8 meters from feeding point

Squalo antenna.

Squalo 2 en 6 Meter antenne. Made with 12 mm copper pipe.

Squalo 6 Meter antenna. Made with 12 mm copper pipe.

Squalo schema 6 Meter.

Squalo 2 meter antenna made with 2.5 mm installation wire. Still with clamps to test

The parts for the 2 meter, 144 MHz Squalo. Made with 12 mm copper pipe. 6 x 11.5 cm pipe. 2 x 21.5 cm pipe. 1 x 2 cm pipe. 8 x knee. 4 x copper saddles.

Squalo schema 2 Meter, 144 MHz antenna.

Squalo 2 meter, 144 MHz and 6 Meter, 50 MHz antenna. Made with 12 mm copper pipe.

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6 elements 2 meter LFA antenna. 9.8 dbd gain. Antenna measurement veron Meppel.

6 elements 2 meter LFA antenna. 9.8 dbd gain. Antenna measurement veron Meppel.

6 elements 2 meter LFA antenna. 9.8 dbd gain. Antenna measurement veron Meppel.

2 meter lfa antenna.

6 elements 2 meter LFA antenna.

2m Halo antenna

2m Halo antenna

2 meter Halo antenna

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J antenne voor 145 MHz Gemaakt van 12 mm koper pijp

J antenne voor 145 MHz Gemaakt van 12 mm koper pijp

J antenna for 2 and 6 meters Made of 300 Ohm ribbon line. Easy to roll up and take with you.

J antenna for 2 and 6 meters Made of 300 Ohm ribbon line. Easy to roll up and take with you.

J-Antenna Schema. 300 Ohm lintlijn

The Zeppelin antenna. For this type of J antenna, patent was applied for in Germany in 1909. Patent No. 225204

J antenna

End Fed Half Wave Antenna coupler.

End fed half wave antenna.

End fed half wave antenna.

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HWmonopole. End Fed antenna for 10 en 20 meter.

HWmonopole. End Fed antenna for 10 en 20 meter.

10 and 20 meter end fed antenna with 1:49 travo.

SWR at 10 and 20 meters.

Capacitor and coil. For 20 meter half wave antenna.

Capacitor and coil. For 20 meter half wave antenne.

This is not new. J. Fuchs invented this end-fed antenna in 1927.

End Fed Half Wave Antenna 10 and 20 meter.

Wire 10.40 m long. Feeding point 4 meters above the ground.

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1:1 Voltage air balun. Test with 100 watts.

Voltage air balun Nr2. met test raport.

1:1 Voltage air balun Nr1. Tested with 100 watts. After that measured with antenna analyzer.

1.3 mm diameter wire wound with 10 turns on a 20 mm diameter PVC pipe.

1:1 Voltage air balun

1:1 Voltage air balun

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Trap dipole 4 and 6 meters. The piece of coax has been replaced by a ceramic capacitor of 15 pF 1000 V

Trap dipole 4 and 6 meters. The piece of coax has been replaced by a ceramic capacitor of 15 pF 1000 V

Trap dipole 4 and 6 meters.

Trap dipole 4 and 6 meters.

Moxon antenna in development.

2 meter Moxon antenna. Made with 6 mm copper wire.

Moxon - 2 meter schema. URL www.moxonantennaproject.comindex.html

Moxon antenna.

Antenna for 475 khz 15 meters high and variometer.

475 kHz Antenna. Mast 15M high. With vario meter.

Wrapped on 31 cm pipe. Vario meter700 to 950 uH. Made for 475 kHz Antenna.

Wrapped on 31 cm pipe. Vario meter700 to 950 uH. Made for 475 kHz Antenna.

Wrapped on 31 cm pipe. Vario meter700 to 950 uH. Made for 475 kHz Antenna.

A variometer is easy to build with readily available materials. Two plastic pipes of different diameters, insulated copper wire and a plastic rod for the shaft are the main components.

SWR 0.474 MHz 630 Meter.

Antenna for 475 khz. 15 meters high and variometer.

HB9CV antenna.

HB9CV voor 2 meter. Made for fox hunting and holidays.

HB9CV calculate for all frequency.

HB9CV voor 2 meter. 145.00 MHz.

HB9CV antenna.

Dipole at home. 2 x 17 meters. Feed point 14.50 meters high. With home made 600 ohm ladder line.

Making the open wire feedline with Rob pa3eqb.

Spacers 8.5 cm. For the home made of the 600 ohm ladder line.

Dipole at home. 2 x 17 meters. Feed point 14.50 meters high. With home made 600 ohm ladder line.

Please note: the images on these sites show my own Morse keys and devices.

They may only be used for private purposes with reference to my site. (Source reference)