The EW tube electrodes are clamped loosely on the tube, close to each end of the plasma tube. The electrodes are prewired and it is not recommended to extend the wire length. The wire limits how far the LC31 coupler can be placed from the tube electrodes.
For PT tube: E1W, $ 28
For ST tube, E2W, $ 33
For BAT tube, E4W, $ 38
