Golay
Member
- Joined
- Apr 28, 2016
- Messages
- 494
Where is that antenna site? The view is looking up the Detroit River towards Belle Isle. Nice pic with the antennas framing the freighters passing in the channel.
btw... those are omnidirectional collinear arrays.
This is probably a matter of semantics. The word collinear merely means that the antenna elements are along a common line all in the same plane. In this case, the elements happen to be folded dipoles so maybe a more complete description would be "folded dipole collinear array".
To the OP... looks like only one reply covered it, but polarization is vertical.
I've been dealing with stacked dipole arrays as in individual dipole elements fed with a corporate feedline for maybe 40yrs and I've not heard them referred to as a "folded dipole collinear array" yet. A collinear array is usually meant as a multi element antenna where the elements tie together end to end in some way as in a bunch of half wave verticals with 1/4 phasing stubs between them, etc.
prcguy
Where is that antenna site? The view is looking up the Detroit River towards Belle Isle. Nice pic with the antennas framing the freighters passing in the channel.
They are two element J poles. Vertical and directional. Now favor one direction.
Can't tell if trolling or serious...
Um, er.... the VHF antennae may be two separate folded dipoles - the feeders seem to go off in different directions rather than a phasing harness. One appears to have a swag of ferrite beads on the feeder so may be a transmitter on the end, not much separation if it's a repeater.