Home made UHF Yagi Antennas
RE-A430Y10

By Guy, de ON6MU

Optimized 10-element UHF Yagi Antenna

UHF optimized yagi antenna for 420-450 Mc for radio amateurs

Horizontal stacking distance: 1075 mm
Vertical stacking distance: 933 mm

The elements diameter of the antenna may vary between 5...8mm and the dipole diameter may
vary between 8...12mm (12mm recommended) without the need of changing anything to the length or spacing.
All elements except the dipole are electrically connected to the boom and may be mounted on top or through it.
The thickness/diameter of the boom may vary between 10...16mm.
Bazooka tube: 15cm diameter 10mm (for Aircel etc.), 15cm diameter 15mm (for H100, Aircom+ etc.)
Use a piece of isolator type boom (plastic tube, wood, fiberglass) of +/- 40cm if you mount the antenna vertical to prevent distorion of the radiation pattern.
Note: the antenna can also be tuned between approx. 428...446MHz


 

Images of the 70cm Yagi antenna,
How Greg SP5LGN made it

Click to enlarge
70 cm antenna, SP5LGN 70 cm antenne, SP5LGN

Thanks Greg for the photo's!

Optimized 6-element UHF Yagi Antenna RE-A430Y6

 

Ham Radio 70 cm 6 element yagi UHF antenna

The elements diameter of the antenna may vary between 5...8mm and the dipole diameter may
vary between 8...12mm (12mm recommended) without the need of changing anything to the length or spacing.
All elements except the dipole are electrically connected to the boom and may be mounted on top or through it.
The thickness/diameter of the boom may vary between 10...15mm.
Use an isolator type boom (plastic tube, wood, fiberglass) if you mount the antenna vertical to prevent distorion of the radiation pattern.

Pictures and details of the optimized UHF Yagi antenna
430 Mc to 440 Mhz (420 Mc to 450 Mc @ 1:2 SWR)


Optimized 4-Element UHF Yagi antenna RE-A430Y4

de ON6MU
70 cm 4 element yagi UHF antenna

 

Check this out:

The elements diameter of the antenna may vary between 5...8mm and the dipole diameter may
vary between 8...12mm (12mm recommended) without the need of changing anything to the length or spacing.
All elements except the dipole are electrically connected to the boom and may be mounted on top or through it.
The thickness/diameter of the boom may vary between 10...15mm.

Image of the 70cm Yagi antenna,
How dr Sasa Vasiljevic made it

Thanks Sasa!

HIGHLIGHTED TODAY:

Home