The UrbanBeam right now is actually only up 45′, not the 50′ I thought. Its not a great DX antenna at this height – but it did seem to (usually) match the DX Engineering DV-40-P phased vertical array. I suspect that the DV-40-P had a pretty great low take off angle that beats a low 40M dipole. When I had the DXU-32 up only 50′, it was gang busters, that was the best 40M antenna I have ever had – but trying to get even a “Shorty 40” 2 element 40M yagi up high enough takes some effort. This is where the DV-40-P was a marvel – the bang you got for your buck – and the fact that it was very easy to maintain will always be a great memory.
However, I want what I had in the DXU-32, but only on 40M. Hence all of my interest in a 2 element “shorty 40” yagi.
Getting the UrbanBeam up to 65′ would make a very big difference for 40M (its a folded dipole there). Replacing it with a 2 element 40M yagi would be a major improvement over the UrbanBeam up 65′
The guying for the 4 additional tubes that I will be getting in about 2 weeks. I found the tubes on my nightly 75M Net – so that was a happy accident!
Ben at Ontario Surplus has the miscellaneous parts that I need – so I ordered 4 new clamps and 1 mid level guy ring. I’ll need some dacron guy rope too. Then I will be set. The yagi will be just above the top tube. I will not use a rotator – this way the antenna will stay up easily – it will be about 30 pounds less than the DXU-32 and also have a boom 10′ smaller than the DXU-32.
I don’t know when I’ll swap the antennas – I’m thinking I should keep the UrbanBeam up 65′ until switching to a 40M yagi makes best sense.
But at some point I expect I’ll make the switch.