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Long Wave CR7 Type 1 exposed tube and rheostat

Long Wave CR7 Type 1; Grebe, A.H. & Co.; (ID = 1066957) Radio
Long Wave CR7 Type 1; Grebe, A.H. & Co.; (ID = 1066382) Radio Long Wave CR7 Type 1; Grebe, A.H. & Co.; (ID = 1066384) Radio
Long Wave CR7 Type 1; Grebe, A.H. & Co.; (ID = 1066959) Radio Long Wave CR7 Type 1; Grebe, A.H. & Co.; (ID = 2314315) Radio
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Long Wave CR7 Type 1; Grebe, A.H. & Co.; (ID = 1066382) Radio
Grebe, A.H. & Co.;: Long Wave CR7 Type 1 [Radio] ID = 1066382 933x704
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For model Long Wave CR7 Type 1 exposed tube and rheostat, Grebe, A.H. & Co.; Richmond Hill (NY):
April 1920 Everyday Engineering Magazine page 63
 
Country:  United States of America (USA)
Manufacturer / Brand:  Grebe, A.H. & Co.; Richmond Hill (NY)
Brand
 
Synchrophase
Year: 1920 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 1: VT-Class-I or B_Moorhead-Shaw
Main principle TRF with regeneration
Wave bands Long Wave and/or Very Low Frequency (VLF).
Details
Power type and voltage Storage and/or dry batteries
Loudspeaker - For headphones or amp.
Power out
from Radiomuseum.org Model: Long Wave CR7 Type 1 [exposed tube and rheostat] - Grebe, A.H. & Co.; Richmond
Material Wooden case
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Notes The Grebe CR-7 Long Wave Regenerative Receiver covered the 500-20,000 meters wavelength range. This early version also lacks the Antennae Condenser switch found on the later versions.
Price in first year of sale 210.00 $
Mentioned in 1921 Mesco catalog page 116-117
Literature/Schematics (2) The Wireless Experimenters Manual, 1920, E.E. Bucher, Page 251

Model page created by Alan Larsen. See "Data change" for further contributors.



All listed radios etc. from Grebe, A.H. & Co.; Richmond Hill (NY)
Here you find 186 models, 115 with images and 59 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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