OWA Yagis

G0KSC SC0607M 7el 50Mhz Yagi

Gain: 12.11 dBi
F/B: 23.23 dB
Elements: 7

Specifications

Performance

Gain: 12.11 dBi
Front-to-back: 23.23 dB
Elements: 7
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
D2	1952 mm	parsed from legacy body — confirm position vs length
D3	3456 mm	parsed from legacy body — confirm position vs length
D4	5290 mm	parsed from legacy body — confirm position vs length
D5	7100 mm	parsed from legacy body — confirm position vs length
Ref	1472.5 mm	parsed from legacy body — confirm position vs length
Driven	1443.5 mm	parsed from legacy body — confirm position vs length
D1	1369.5 mm	parsed from legacy body — confirm position vs length
D2	1367.5 mm	parsed from legacy body — confirm position vs length
D3	1340 mm	parsed from legacy body — confirm position vs length
D4	1321.5 mm	parsed from legacy body — confirm position vs length
D5	1272 mm	parsed from legacy body — confirm position vs length
Ref	0 mm	parsed from legacy body — confirm position vs length
D2	1952 mm	parsed from legacy body — confirm position vs length
D3	3456 mm	parsed from legacy body — confirm position vs length
D4	5290 mm	parsed from legacy body — confirm position vs length
D5	7100 mm	parsed from legacy body — confirm position vs length
Ref	1474 mm	parsed from legacy body — confirm position vs length
Driven	1444 mm	parsed from legacy body — confirm position vs length
D1	1371 mm	parsed from legacy body — confirm position vs length
D2	1369 mm	parsed from legacy body — confirm position vs length
D3	1341 mm	parsed from legacy body — confirm position vs length
D4	1322 mm	parsed from legacy body — confirm position vs length
D5	1273 mm	parsed from legacy body — confirm position vs length

Modelled performance

Plots

About this design

G0KSC SC0607L 7el 50Mhz Yagi Antenna with a 7.1 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 elements and also 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 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 publish those too.