Mercury Broadcast Receiver, Grimes Inverse Duplex System
Mercury Radio Products Co.; Orange / Little Falls, NJ and New York, NY
- Country
- United States of America (USA)
- Manufacturer / Brand
- Mercury Radio Products Co.; Orange / Little Falls, NJ and New York, NY
- Year
- 1923–1925
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 47018
- Number of Tubes
- 4
- Main principle
- TRF (Tuned-Radio-Frequency but use of regeneration unknown); 3 AF stage(s); Reflex
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage and/or dry batteries
- Loudspeaker
- - This model requires external speaker(s).
- Material
- Wooden case
- from Radiomuseum.org
- Model: Mercury Broadcast Receiver, Grimes Inverse Duplex System - Mercury Radio Products Co.;
- Shape
- Tablemodel, Box - most often with Lid (NOT slant panel).
- Notes
- Mercury Broadcast Receiver uses the Grimes Inverse Duplex System. Four tubes, reflexed and equal to six straight. (two tuned radio frequency, tube detector and three stabilized audio frequency). Operates from loop Antenna. Solid American Walnut cabinet.
- Price in first year of sale
- 165.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Literature/Schematics (4)
- January 1925 Radio Broadcast magazine advertisement
- Other Models
-
Here you find 8 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Mercury Radio Products Co.; Orange / Little Falls, NJ and New York, NY