Edison R7 Schematic purchase

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Schematics sent by Email £1.80 (~ $2.20 or €2.10)

Wednesday 17/4/2024 0:47
I am away until Thursday evening 21/12/2023 I cannot send any schematics marked TO SCAN until home, pre-scanned ones will be sent probably in the evening UK time
Edison R7 (Beitman : edison 1926 P: 55)
£1.80 (~ $2.20 or €2.10)
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The schematic will be taken from Beitman-1926 to 1938

Beitman-1926 to 1938 preview

Edison R7 Specification spec data sheet

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by an Artificially (not so) Intelligent algorithm
CountryUSA
ManufacturerEdison, Thomas A., North American Phonograph / National Phonograph; Orange, NJ
ModelR-7 - Edison, Thomas A., North
YearBroadcast Receiver
Valves9: 24 24 24 27 27 27 45 45 80
TechnologyTRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935
Tuned Circuits5 AM circuit(s)
Wave BandsBroadcast only (MW).
Power TypeAlternating Current supply (AC) / 105; 115; 125 Volt
Initial Price268.00 $