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Tube Substitutions for:
SRS551
Transmitting Tube, Pentode, air cooled
TypeSubstitutesBase Diagram
SRS551F3a, RS1003
Web ReferencesSRS551 (RFT) @ Franks Electron Tubes?
SRS551 (RFT) @ Franks Electron Tubes?
SRS551 @ Radiomuseum


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