Why it mattered
Engineering record
No technical figures are published here until a working source confirms them.
Original pricing
Not documented
2026 equivalent
Not calculated without a reliable original price.
No sourced price has been located.
Use in the field
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Manuals & original documents
No authoritative manual or original document has been located for this profile.
Sources
- 1Riesenblatthaller (citing Siemens-Mitteilungen, Aug 1927)Radiomuseum.org · reference · link pending
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