The G0KSC 10/6 Dual band Yagis coming to a store near you!
G0KSC and G8FJG build the first of the next generation 10/6 dual band, interlaced Yagis. The above antenna installed on the tower at G8FJG below a 9el 2M LFA and a 22el 70cms LFA.
With the sun starting to bubble and crack, I am sure these 10/6 dual banders will become very popular and most of the approved G0KSC manufacturers agree by confirming they wil be going into production very soon! The pictured example is just 5.3M (17.5') long and provides a 5 element 6M Yagi and a 4 element 10M Yagi. The antenna is fed at within the 10M dipole in the normal 'split dipole' configuration and uses the 'open sleeve' coupling method to excite the 6M elements. Therefore, this antenna really suits most modern day HF rigs by occupying just one antenna socket! Having a direct 50OHm feedpoint, this antennas power handling is limited only by the coax used to feed it.
So how does it perform? G8FJG has a cobwebb multi-band onmi directional antenna installed too and had this to say:
'yesterday heard Saudi beacon up to 579.......not audible on cobwebb!! and Italian beacon again nothing on cobwebb..............got to get used to rotating beam on 10,...now I know why people have beams if they can.'
VersionA of this antenna ready for installation at 9W2DAL
The construction and testing of the above antenna will be presented within the next issue of antenneX where the latest plots and diagrams will also be shown. However, I can tell you that without adjustment, this antenna presented an SWR curve for below 1.5:1 from 27.7 to 29.7MHz and 50 to 51MHz the majority of which no higher than 1.2:1!
More OWL developments too in addition to more 70MHz antennas to be added to this site for the summer months. Stay tuned!
Justin G0KSC