{Collins} DH3PJ solid state 26Z5 replacements for R-390a. Reviews?

Doing some refreshing on the R-390a, and ran across these solid state modules offered by Dr, Kurt Schmid, DH3PJ.  


He also sells a replacement for the 3TF7 ballast tube.  They are smart looking little modules, and fit beneath the stock tube shield.  I searched the archives and could not find any reference to him/them.  Has anybody on the list used either of these modules?  If so, could you please share any feedback with the list?  As expensive as those pesky rectifiers and ballast tube are getting, perhaps solid-stating is the way to go moving forward...  


Chris kc9ieq

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