Modifications of the Quad-Helix or Bi-Helix appliance
It is possible to solder or laser other elements (spikes or similar) onto the Quad-Helix appliance without any problems, here for example, a MIA-System.
Spikes can also be lasered or soldered without any problems to a Wilson appliance.
The Bi-Helix appliance also exists preformed for the MIA or Wilson System.
