Details for all Yagis 1-El.-50Ohm 2-El.-28Ohm 3-El.-28+50Ohm
4-El.-50Ohm (0,76m) 4-El.-28Ohm (0,76m) 4-El.-28Ohm (0,82m) 4-Ele.-28-Ohm (1,00m)
5-Ele.-28+50-Ohm (1,50m)  5-Ele.-28-Ohm (1,80m) 5-(6)-Ele.-28-(50)-Ohm (2,00m) 6-El.-28-Ohm (2,40m)
6-El.-28-Ohm (2,60m) 7-Ele.-28+50Ohm (3,00m) 7-Ele.-28-Ohm (3,30m) 8-Ele.-28-Ohm (4,35m)

8x6-Element-DK7ZB

 at SK3W

Whow... what a tower!

Link

6-Element-Yagi for the 2-m-Band with the 28-Ohm-DK7ZB-Match

A second 28-Ohm-Yagi for FM-Use

see down (145-146 MHz)

 

2,40m-Boom      9,9dBd        24dB F/B

 

4x6-El.-28-Ohm-Yagis

built by Yannis, SV1BJY

 

for SY8VHF

 

at the VHF-DXpedition to

Othoni-Island, JM99QU

July 1-6, 2010

 

DO1IR built up the 6-Ele.-Yagi and tested the reflection with the HP-Networkanalyzer HP 8713C:

Elementpositions:

Refl Rad Dir 1 Dir 2 Dir 3 Dir 4
0 390 640 1150 1785 2380

Elementlengths, Radiator always 10mm diameter! 

Diameter Refl Rad (10mm) Dir 1 Dir 2 Dir 3 Dir 4
10mm 1017mm 971mm 935mm 907mm 905mm 876mm
8mm 1019mm 971mm 942mm 914mm 912mm 884mm
6mm 1021mm 971mm 948mm 921mm 920mm 892mm
4mm 1023mm 971mm 955mm 930mm 929mm 903mm

6-Element-28-Ohm-Yagi for FM in the 2-m-Band 

Gain 10 dBd   F/B 25 dB

Boomlength 2,5 m

The Yagi built by Richard, 2I0RWG

Richard, 2I0RWG used an old solid polyethylene chopping board for the element holders, a genious idea...

Elementpositions:

Refl Rad Dir 1 Dir 2 Dir 3 Dir 4
0 268 mm 595 mm 1200 mm 1900 mm 2455 mm

Elementlengths for an element half (!)

Diameter Refl Rad  Dir 1 Dir 2 Dir 3 Dir 4
10 mm 510 mm 483 mm 457,5 mm 448 mm 447,5 mm 439,5 mm
3/8 inch 510,5 mm 483,5 mm 458,5 mm 449 mm 448,5 mm 440,5 mm
8 mm 511 mm 485,5 mm 461 mm 451,5 mm 451,5 mm 443,5 mm
6 mm 512,5 mm 488 mm 465 mm 456 mm 455,5 mm 448 mm
4 mm 513,5 mm 491 mm 469,5 mm 461 mm 461,5 mm 453 mm
3,2 mm 514 mm 491 mm (4mm) 471,5 mm 463 mm 462,5 mm 455,5 mm