So my cantennas I think are hampered by my location-but building on the @glennblum veggie can concept, I wanted to see what else I could do with it.
Then I went down an internet rathole…found this page: http://martybugs.net/wireless/collinear.cgi.
I decided to try to adapt this type of design to 1090 mhz.
I had 16 gauge copper wire in hand, so I formed it into the 1/2 wave 1st element 137 mm long,then into a 10mm single coil ( bent around an F connector barrel which is close enough in diameter ) then the 3/4 wave 207mm second element, another 10mm single coil, ending with the last 3/4 element of 207mm.
I knew that I would be trimming the last element, so I found that a final length of 200mm worked well and I wasn’t willing to keep trimming- although it appeared that the article I borrowed the design from the final element was reduced nearly 10% from the 3/4 wave length. I have no way to verify this other than “destructive test”, so maybe I’ll create another to fiddle with trimming/ tuning
Certainly not a new concept, and I’m sure that folks like @abcd567 have already tested versions of this design. I found that despite being nearly 12 feet lower in elevation in a tree-infested property, the reception results were nearly on par with the FA stick.
Only takes a little more time than building a 1/4 wave spider.