Mosquito Signal Tracer
Don Bosco Electronics Inc.; Hanover (N.J.)
- Country
- United States of America (USA)
- Manufacturer / Brand
- Don Bosco Electronics Inc.; Hanover (N.J.)
- Year
- 1959 ??
- Category
- Service- or Lab Equipment
- Radiomuseum.org ID
- 111885
- Wave bands
- - without
- Power type and voltage
- Dry Batteries / 1,5 Volt
- Material
- Various materials
- from Radiomuseum.org
- Model: Mosquito Signal Tracer - Don Bosco Electronics Inc.;
- Shape
- Miscellaneous shapes - described under notes.
- Notes
- Pen style signal tracer for servicing transistor radios.
- Source of data
- -- Collector info (Sammler)
- Author
- Model page created by a member from A. See "Data change" for further contributors.
- Other Models
-
Here you find 1 models, 0 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Don Bosco Electronics Inc.; Hanover (N.J.)
Forum contributions about this model: Don Bosco: Mosquito Signal Tracer
Threads: 2 | Posts: 2
My example was not functioning and I decided to dismantle the probe to understand its function and design.
The dismantle process can only be done in a destructive manner but yielded useful information as follows:
The device is essentially composed of a non blocking oscillator comprising only a pulse transformer with two windings, a PNP transistor (2N408) and a capacitor of value around 500pf. The precise value was not readable as the capacitor appears to have been damaged (probably by connection to a high voltage equipment under test).
The circuit appears very similar to the Eico injector of a similar vintage (details on antiqueradios.com).
David Sanderson, 27.May.18
I have an example of this Dom Bosco signal injector.
Further information about the device is available on the a web site run by Steve Johnson.
David Sanderson, 27.May.18