Side-on type having S-1 response. Wavelength of maximum spectral response is 8000 +/- 1000 angstroms. This type makes use of a semicylindrical photocathode, and has a direct interelectrode capacitance of 3 picofarads. Anode-Supply voltage is 90 volts. A special black painted tubular brass "hood" with a circular hole in the side, approx. 25 mm diameter , was available for this tube
Tube Lore (II) p. 80 & 213
- - Manufacturers Literature RCA Phototubes and Photocells PT-60
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
868: RCA Phototubes 1941
David Erali
868: KoBi
Konrad Birkner † 12.08.2014
Just Qvigstad
868: AWV Radiotron Valve Data Book
Stuart Irwin
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