Originally Posted by IBCrazy
MXM000 - Your return loss looks a bit unstable. You might have a defect in the cable (or the feed) causing some resonance effect. This could be skin effect tracking down the tube. Your second major trough in your plot is most certainly skin effect of the signal tracking down the tube.
Hi Alex just building another of these for myself as they are wicked!
With what you are saying in the above post do you mean the ground is not connected well enough to the tube?
I only ask because I have no means of testing antennas at the mo and for the biquad normally I use a tube attached to the reflector that is a tight fit to the ground when pushed through then fold a bit of the ground sheath over then solder that.
Do you think this is sufficient?