OWA Yagis

G0KSC SC0604S 4el 50Mhz Yagi

Gain: 8.54 dBi
F/B: 18.83 dB
Elements: 4

Specifications

Performance

Gain: 8.54 dBi
Front-to-back: 18.83 dB
Elements: 4
VSWR (max): 1.1 VSWR
Impedance: 50 Ω

Dimensions

Element dimensions

Element dimensions (parsed from legacy body — check before publishing)

Element	Position	Note
Ref	0 mm	parsed from legacy body — confirm position vs length
D1	1270 mm	parsed from legacy body — confirm position vs length
D2	2402 mm	parsed from legacy body — confirm position vs length
Ref	1495 mm	parsed from legacy body — confirm position vs length
Driven	1479 mm	parsed from legacy body — confirm position vs length
D1	1385 mm	parsed from legacy body — confirm position vs length
D2	1307 mm	parsed from legacy body — confirm position vs length
Ref	0 mm	parsed from legacy body — confirm position vs length
D1	1270 mm	parsed from legacy body — confirm position vs length
D2	2402 mm	parsed from legacy body — confirm position vs length
Ref	1496 mm	parsed from legacy body — confirm position vs length
Driven	1480 mm	parsed from legacy body — confirm position vs length
D1	1386 mm	parsed from legacy body — confirm position vs length
D2	1308 mm	parsed from legacy body — confirm position vs length

Modelled performance

Plots

About this design

G0KSC SC0604S 4el 50Mhz Yagi Antenna with a 2.402 Metre Length Boom

This antenna has been redesigned and represents what i beleive to the the 'ideal boom length' for an OWA direct feed 50Ohm Yagi. This can be seen in the model in the super flat SWR, the high levels of F/B ratio along with the excellent gain and pattern.

The model below is designed with 12.7mm / 1/2 inch and also 12mm elements. If you require a version of this antenna with another diameter wire, Email me and I will remodel. It is NOT POSSIBLE to simply resize the elements when using a VERY different diameter wire and get the best performance in my opinion, I remodel the whole antenna each time. Element positions also need to change for the ideal antenna to be achieved again. Please read all the way down this page, there are other versions of this antenna using tapered elements too. As I have more requests, I will remodel in other element diameters and tapers and pulbish those too.