OPEN SOURCE EVERYTHING...
Subject: The Medium Pressure Discharge Lamp as a Compact Plasma-Antenna
Depictions of compact plasma-antenna
in ED165 and BT200 bulb shape,
with 3-contact E39/E40 screw cap.
Consider for the ED165 plasma-antenna the arc tube of the same size as that used in the Osira MA lamp (the first mercury lamp): http://www.lamptech.co.uk/Documents/M8A%20MA%20Lamp.htm
Discussion to continue...
Suitable high voltage lampholder on our page:
Notice that this type of 3-contact screw-cap plasma antennas may use a common 2-contact lampholder in order to supply the current for the plasma tube, while the 3rd contact needs to be made separately, by connecting the antenna wire directly to the upper contact of the screw-cap using a special bracelet, after the antenna-bulb is screwed.
Gas Plasma Tube For High Power RF: http://plasmasonics.com/tube.html