847S "Facto Meter"
Bendix Radio Division; Baltimore, MD
- Country
- United States of America (USA)
- Manufacturer / Brand
- Bendix Radio Division; Baltimore, MD
- Year
- 1947
- Category
- Service- or Lab Equipment
- Radiomuseum.org ID
- 136839
Sams Photofact Folders
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 8
- Main principle
- Superhet with RF-stage; ZF/IF 455/10700 kHz
- Wave bands
- Broadcast (BC) and FM or UHF.
- Power type and voltage
- Alternating Current supply (AC) / 110 - 120 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
- Material
- Metal case
- from Radiomuseum.org
- Model: 847S "Facto Meter" - Bendix Radio Division;
- Shape
- Tablemodel, with any shape - general.
- Notes
- Bendix 847S "Facto Meter" is an AC operated FM-AM Superheterodyne Receiver (Field Test) with Telescopic Antenna. Built-in field strenght instrument.
6" x 9" PM elliptical speaker.
- Mentioned in
- Radio Retailing (Radio & Television R.) (September 1947 page 6, 132.)
- Literature/Schematics (1)
- Photofact Folder, Howard W. SAMS (Date 11-47, Set 28, Folder 4718-3)
- Author
- Model page created by Egon Penker. See "Data change" for further contributors.
- Other Models
-
Here you find 440 models, 359 with images and 216 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Bendix Radio Division; Baltimore, MD
Collections
The model 847S "Facto Meter" is part of the collections of the following members.
Museums
The model 847S "Facto Meter" can be seen in the following museums.
Forum contributions about this model: Bendix Radio: 847S "Facto Meter"
Threads: 1 | Posts: 1
Hi All,
I was restoring a "tubeless" Bendix 847S Facto Meter and discovered an undocumented manufacturing change. The FM RF tube was not a 7-pin device (6AG5 as listed in every piece of documentation I could find) it was a 9-pin socket which isn't documented on the tube chart, schematic or any other place I can find. I thought about replacing the socket but of course it's buried under the gang switch and almost impossible to inspect how it's connected not to mention how it's connected.
I asked the good people on the Antique Radio Forum and Jim Mueller responded, "It's probably a production change for the tube that didn't make it into the labeling. Since it is the RF amplifier, it might be a dual triode like a 6BQ7 in a cascode circuit." So I check everything I could get to and it appeared to be at least wired for the 6BQ7 so I gave it a try. I am happy to report that it works great. My thanks to Mr. Mueller and I hope this proves helpful for others.
Cheers, Scott
James Massey, 19.Dec.21