|Year: 1949||Category: Television Receiver (TV) or Monitor|
|Valves / Tubes||35: 6J6 6AK5 6AB4 6AG5 6AG5 6AG5 6AL5 6BA6 12AU7 6AG7 15DP4 6AU6 6AU6 6AU6 6AL5 6AL7GT 6AT6 6V6GT 6AU6 6AL5 6AG5 6SN7GT 6SN7GT 6AL5 6AC7 6K6GT 12AU7 6BG6G 1B3GT 1B3GT 5V4G 6X4 6X4 5U4G 5U4G|
|Main principle||Super-Heterodyne (Super in general)|
|Wave bands||Wave Bands given in the notes.|
|Power type and voltage||Alternating Current supply (AC) / 117 Volt|
|Loudspeaker||Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 inch = 30.5 cm|
|Power out||2.5 W (unknown quality)|
|from Radiomuseum.org||Model: Mansfield RA-108A - DuMont Labs, Allen B., Inc.|
|Shape||Console with any shape - in general|
|Notes||The DuMont RA-108 family of 19-inch round CRT TV receivers (or "Telesets" as DuMont called them) have a continuous tuning Mallory-Ware Inductuner (called an "Inputuner" by DuMont) using a triple roller inductor which covers the VHF low, FM, and VHF high bands in one band from 44-216 MHz. A 6AL7GT tuning eye is also provided. The chassis has main unit and a subchassis for HV flyback power supply with voltage doubler.
There are two models in the family. The RA-108A Bradford is a TV/FM/AM/phono mahogany console. The RA-108A Mansfield is a TV/FM console. Both were introduced in 1949.
|Source of data||Photofact Folder, Howard W. SAMS|
|Circuit diagram reference||Photofact Folder, Howard W. SAMS|
|Literature/Schematics (1)||SAMS set 95 folder 3, Rider TV vol. 4 page 5|
Model page created by Thomas Albrecht. See "Data change" for further contributors.
All listed radios etc. from DuMont Labs, Allen B., Inc.
Here you find 217 models, 111 with images and 176 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.