6-Element-28-Ohm-Yagi with 7.20m-Boom
Short data: Gain 10.1 dBd, F/B >20dB, bandwidth 1MHz (49.6-50.6 MHz) at SWR < 1.5. This Yagi was built first for 2m and and the pattern was verified by measurement. After that the Yagi was scaled for the 6m-Band. I will use that Yagi in the next time 2m above of my 15-Ele.-Log-Periodic on a new tower.
The design is very uncritical and you can mount this Yagi 2m above another beam with very low detuning effects!
Element |
Element-position (mm) |
Element-length (mm) |
R |
0 |
2930 |
DE |
780 |
2860 |
D1 |
1645 |
2750 |
D2 |
3290 |
2680 |
D3 |
5385 |
2650 |
D4 | 7150 | 2640 |
Match with 2xLambda/4 75-Ohm-coax in parallel to a grounded socket, feedpoint impedance 50Ohm.