- Manufacturer / Brand
- Commonwealth Electronics Pty. Ltd.; Hobart, TAS
- Microphone or Pick-up element
- Radiomuseum.org ID
- Wave bands
- - without
- Power type and voltage
- No Power needed
- Metal case
- from Radiomuseum.org
- Model: WRN/2 Pickup - Commonwealth Electronics Pty.
Tonearm with magnetic cartridge used with Commonwealth Electronics 12” and 16” transcription turntables.
The pickup is of the wide gap variable reluctance type with cantilever stylus.
Has a design feature which permits the stylus to be changed instantly by removing the front plate complete with stylus, armature and suspension as a unit, thus eliminating the need for small electrical contacts or pins between the pickup head and tone arm. The plate is held in place magnetically and located by two dowel pins.
Advertised for £25/12/- complete with matching transformer in January 1959.
Approximately 6 grams. Operation is
satisfactory down to 3 grams, but the
above figure has been selected as the best compromise.
Lateral Compliance at stylus Tip
Not less than 5 x 10 - 6 cm/dyne.
Not less than 2 x 10 - 6 cm/dyne.
Effective Mass to Lateral Movement
Effective Mass to Vertical Movement
0.001" for microgroove records.
0.0025" for standard records.
Removable front plate assembly.
Less than 40
Tone-arm Mounting Centres
12" Model – 7.6” 16" Model – 10.75".
12" Model – 2.5” 16" Model - 3"
Microgroove or standard stylus
Within + or - 2dB, 20-14000 Hz
Less than 2% measured at 100 Hz. And 7000 Hz. (Cook record).
Tone Arm Resonance
20 Hz + or – 5Hz.
Approx. 10/MV/CM in 150,000 ohms.
Load Impedance Transformers
Available in 50, 200, 500 or l50k ohms balanced.
- Price in first year of sale
- 25.60 AUS £
- Mentioned in
- -- Original prospect or advert (Radio & Hobbies, Jan 1959, page 100)
- Model page created by Gary Cowans. See "Data change" for further contributors.
- Other Models
Here you find 8 models, 8 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Commonwealth Electronics Pty. Ltd.; Hobart, TAS