Wave Meter Class C No 1
Crystal Unit and Vibrator Power Supply

Circuit Diagram, Service Manual, Service Information,  Schematic Diagrams and Manuals

For Repairing, Restoration and Servicing of Vintage and Modern Electronic Equipment

Manual Circuit and
Operation Instructions
Details Below
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General description

Purpose and facilities

The Wavemeter, Class C, No. 1 is a portable heterodyne wavemeter for use with field wireless sets for adjusting the senders and receivers to particular frequencies and for checking the frequency calibration of these sets.

The overall accuracy (±0.1 %) without a crystal unit is not sufficiently high for it to be used as a check of absolute frequency, so that, where inter-group working is required, the wavemeters checking the frequencies of each group should be checked against a crystal unit or mutually against each other.

General description
Purpose and facilities
Weight and dimensions 
Frequency range
Accuracy
Power supply
Construction

Technical description
The wavemeter circuit
The power supply circuits
The L.T. supply
The H.T. supply
Alternative H.T. supply
The tuning mechanism
The inductance.
The gearing and associated mechanism
The range switch
The scale plate
The correction chart 

Working instructions
Preliminary
To set the wavemeter to a given, frequency
To set a sender to a given frequency
To set a receiver to a given frequency
To determine the frequency of a received signal
To determine the frequency on which a transmitter is operating
Use of a H.T. battery in place of the H.T. unit
Use of the white tablet on the front panel

Maintenance and repair
Maintenance of the wavemeter
The correction chart
Re-setting the trimming condensers
Repairs to the wavemeter
To remove the wavemeter from the case
To remove the front panel
Assembly
The H.T. unit (Units H.T., vibratory, No. 1)
To remove the unit from its case
To change the vibrator

Appendices
List of main components
Complete station
Crystal unit
General description
Technical description
Check points
Method of use
Miscellaneous uses 
List of main components

Diagrams
Fig. 1. Wavemeter, Class C, No. 1—Circuit diagram
Fig. 2. Units H.T., vibratory, No. 1—Circuit diagram
Fig. 3. Wavemeter, Class C, No. 1—Simplified circuit
Fig, 4. Crystal unit—Circuit diagram

Plates
Wavemeter, Class C, No. 1—General view.
Wavemeter, Class C, No. 1—Internal view showing HT. plug dismantled.
Waveméter, Class C, No. 1—Internal view, top panel removed
Units HT., vibratory, No. 1—External view
Units H.T., vibratory, No. 1—Internal view

Manual Circuit and
Operation Instructions
Details Below
As a Download
Click Here

We do all we can to provide the very best that is available for you.
But in the unlikely event that any data should not be as you expected.
A refund is always available. Kind Regards Allen and Alanna.