I tried a crossed offset yagi on the one boom.
When I threw just one part of the yagi on the boom, AO-51 was really good,
Now I am finding that with the second yagi on the boom I am seeing a big drop between 435.300 and 435.150 voice / data.
I think I might remove the second yagi from the common boom and add it to a new seperate boom
I think I am getting -20db due to the cross polar RHCP LHCP with the data
The voice is great , the data is down in the mud