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SIRIO SY 27-4 HAM BANDS modification | Radioaficion Ham Radio

SIRIO SY 27-4 HAM BANDS modification

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SIRIO SY 27-4 YAGI 4el. for 27MHz 28MHz  10, 12, 6 meter HAM BANDS modification.SIRIO SY 27-4
YAGI 4el. for 27MHz 28MHz MODIFICATION


10, 12, 6 meter HAM BANDS modification.  With slightly element changing this antenna can be used on the ham bands.

Band 28.000 - 28.700 MHz:

Reflector:         556 cm.                                    Gama:    41cm. C:    60 pf

Driven:              522cm.                                           

Director1:         488 cm.

Director2:         470 cm.

Gain: 13.42 dBi; F/B 23dB

Band 24.890 - 24.990 MHz:

Reflector              632 cm.                                      Gama:     61 cm.

Driven                   598 cm.                                               C:     65 pf.

Director1              556 cm.

Director2              532 cm.

Band 50.000 - 50.500 MHz:

Reflector           300 cm.                                      Gama:     44 cm.

Driven                294 cm.                                               C:     27 pf.

Director1           278 cm.

Director2           268 cm.

Gain 15.32 dBi.

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