6G001ZYX Universal
Zenith Radio Corp.; Chicago, IL
- Country
- United States of America (USA)
- Manufacturer / Brand
- Zenith Radio Corp.; Chicago, IL
- Year
- 1947 ?
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 241915
-
- alternative name: Chicago Radio Lab
- Number of Tubes
- 6
- Number of Transistors
- Semiconductors
- Selenium-Rectifier
- Main principle
- Superhet with RF-stage; ZF/IF 455 kHz
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Line / Batteries (any type)
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
- Material
- Metal case
- from Radiomuseum.org
- Model: 6G001ZYX Universal - Zenith Radio Corp.; Chicago,
- Shape
- Portable set > 8 inch (also usable without mains)
- Notes
-
Rectifier tube replaced by selenium rectifier.
Attention:
This 6G001ZYX is different from the 6G001YZX. How far they are common is not (yet) known.
- Author
- Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.
- Other Models
-
Here you find 4491 models, 4096 with images and 3595 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Zenith Radio Corp.; Chicago, IL
Collections
The model 6G001ZYX Universal is part of the collections of the following members.
Forum contributions about this model: Zenith Radio Corp.;: 6G001ZYX Universal
Threads: 1 | Posts: 5
Hello Radio Friends,
While going over the chassis of my 6G001YZX this weekend, I noticed something immediately; the lack of a 117Z6 rectifier tube and in its place is a selenium rectifier (SR). The tube socket is replaced with a metal plate, which appears to be factory work, and the SR is bolted to the underside of this plate. The SR is connected to a wire-wound 3 or 5 watt resistor (that is well cooked and the ceramic is broken, but the wire is not) which is connected to the 40 mfd electrolytic (7A). Since the resistor no longer bears any markings, I tested it around 155 ohms. That seems low to me, but I decided to stay in that vicinity and replaced the resistor with a 240 ohm 7 watt resistor. It immediately came back to life, with only the slightest hum (I have changed nothing else, yet), and a small bit of squealing when I adjust the volume (presumably from the SR). After 5 or 6 minutes, the new resistor was still cool enough to touch with my finger.
Is anyone familiar with this set and possibly know if this was something common for Zenith to do by 1946? I did not think selenium rectifiers were widely used on the 1950s?
Any other feedback from the far-more-experienced-group-than-I is also appreciated.
Bob
Bob Isaac, 19.Apr.10