OWA Yagis

G0KSC 6el 50Mhz OWA Long Boom Yagi

Gain: 11.71 dBi
F/B: 21.7 dB
Elements: 6

Specifications

Performance

Gain: 11.71 dBi
Front-to-back: 21.7 dB
Elements: 6
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	1084 mm	parsed from legacy body — confirm position vs length
D2	2535 mm	parsed from legacy body — confirm position vs length
D3	4525 mm	parsed from legacy body — confirm position vs length
D4	6150 mm	parsed from legacy body — confirm position vs length
Ref	1484 mm	parsed from legacy body — confirm position vs length
Driven	1462.5 mm	parsed from legacy body — confirm position vs length
D1	1380 mm	parsed from legacy body — confirm position vs length
D2	1344.5 mm	parsed from legacy body — confirm position vs length
D3	1329.5 mm	parsed from legacy body — confirm position vs length
D4	1311.5 mm	parsed from legacy body — confirm position vs length
Ref	0 mm	parsed from legacy body — confirm position vs length
D1	1084 mm	parsed from legacy body — confirm position vs length
D2	2535 mm	parsed from legacy body — confirm position vs length
D3	4525 mm	parsed from legacy body — confirm position vs length
D4	6150 mm	parsed from legacy body — confirm position vs length
Ref	1485 mm	parsed from legacy body — confirm position vs length
Driven	1463.5 mm	parsed from legacy body — confirm position vs length
D1	1381 mm	parsed from legacy body — confirm position vs length
D2	1345.5 mm	parsed from legacy body — confirm position vs length
D3	1330.5 mm	parsed from legacy body — confirm position vs length
D4	1312.5 mm	parsed from legacy body — confirm position vs length

Modelled performance

Plots

About this design

G0KSC SC0606L 6el 50Mhz Yagi Antenna with a 6.75 Metre Length Boom

This antenna is not recommended for use in noisy city locations due to the elevation pattern. This is not a fault with this antenna, it is a characteristic of this boom length/ Wavelength

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 elements and a 12mm element version. 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 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.