Originally Posted by Coil
I had a helper that adjusted my receiver antenna to have the best reception possible... picture was crystal clear to about 3 km then started to degrade, good thing about circular polarisation is that picture quality degrade very linear. It is a very predictable system, i will try to make 7 turn helical and push even further.
What measurements are you using? I used 13mm spacing and a 16mm wooden dowel rod.