A 5el 28 Ohm 144MHz Optimised Wideband Low impedance (OWL) Low Temperature Yagi
Premium commercial versions of this antenna at Innovantennas
The OWL by G0KSC provides the benefits of both OWA (Optimised wideband Array) 50 Ohm antennas with those of traditional low impedance antennas. More information on the OWL can be found under the CONSTRUCTION menu above.
This is an ultra compact, high gain wide band 28Ohm Yagi which is ideal for all sorts of operation, including portable/field day. At only 1.34M long and producing over 10.4dBi this will be a popular home build antenna.
PLEASE NOTE:
- Visit 'Making the OWL Match' for more information on the recommended matching methods
- Please add 2mm to each element to allow for insulator correction if using insulators similar to G0KSC. If through boom/insulator/element bolts are used, add 3mm
- This is a Low Temperature antenna, ideal for EME work
Performance UK/USA Version
Forward Gain: 10.42dBi at 144.300MHz
Front to Back Ratio: 25.12dBi at 144.300MHz
Peak Gain: 10.47dBi
Peak F/B: 25.41dB
Bandwidth: 1.2MHz below 1.1:1
Build Dimensions for UK/USA Version
Element Spacing in metres Half element Length in metres Element Notes
Reflector 0 .517 3/8 inch tube
DE .184 .502 1/2 inch tube
D1 .338 .479 3/8 inch tube
D2 .840 .460 3/8 inch tube
D3 1.364 .447 3/8 inch tube
Build Dimensions for European Version
Element Spacing in metres Half element Length in metres Element Notes
Reflector 0 .517 10mm tube
DE .184 .503 12mm tube
D1 .338 .479 10mm tube
D2 .840 .460 10mm tube
D3 1.364 .447 10mm tube
Antenna Plots
Fantastic Azimuth plot of this low temperature 5el 144MHz 28Ohm OWL Yagi
The Elevation plot is really clean too. A super quiet antenna, find one the same size that is more quiet!
A Super quiet antenna that is wideband? Another first from G0KSC. Watch how many now appear on the Internet but remember where you saw them first!
The G0KSC OWL element layout. Note the close spacing of the first three elements. My 'secret' to wide band low impedance antennas I now release for all to use.
As always, or if you have difficulty at all, please Email me!
Justin G0KSC