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In Reply to: RE: German post tubes Da, Ca,Ce, Ba, Bh etc. in a SET amp? posted by iodemus on September 16, 2016 at 16:23:14
Do you know Dhtrob projects?
https://www.dhtrob.com/projecten/_nl.php
Follow Ups:
Yes, I know the interesting pages of DHTROB and his schematic of the Ca/PX25 amplifier.
I have the oldest versions of Ca, and the superior DET5, which is the prototype and predecessor of NT40 which again is the military equivalent to the PX25.
Other designations like CV1040, VR40 and other are used.
But I want to use the Da output tubes, and a schematic with that scarce tubes are impossible to find. May be they don't exist.
Or may be our German friends can help?
Best regards,
Johnny
http://www.mif.pg.gda.pl/homepages/frank/short/054/0/092.pdf
Have a look at vt52.com for inspiration
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