Class D Wavemeter No1 Mk 1 Mk 2 Mk 2*
Frequency Meter Wave Meter

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GENERAL DESCRIPTION.

Purpose and facilities.

The Wavemeter Class D. No. 1, Mk. I, Mk, II and Mk. 11*
Is a portable heterodyne wavemeter similar to the instrument previously known as Corrector Frequency.

NOTE
The Wavemeter Class D. No. 1, Mk. I is the original Corrector Frequency with minor circuit changes.
It has a detachable lid.

The Wavemeter Class D. No. 1, Mk. II
Is the same as the Mk. I instrument except for minor circuit changes. It has a hinged lid.

The Wavemeter Class D. No. 1, Mk. 11*
Is the same as the Mk. II instrument except for component changes.

The Wavemeter is designed for adjusting senders and receivers to particular frequencies, for checking frequency calibration of these sets, and for determining the frequency of a received signal.

The accuracy of the wavemeter can be expected to be within + or - 2 kc/s. over ranges 1 and 2.

The frequency band covered is 1900 kc/s to 8000 kc/s (158—37.5 m.) in two ranges : -
1900 kc/s - 4000 kc/s and 4000 kc/s - 8000 kc/s.

The instrument also provides check frequencies, spaced apart by 1 mc/s (1000 kcs), up to 25 mc/s (25,000 kc/s). These check frequencies are used for verifying gross errors of calibration.

WEIGHTS AND DIMENSIONS.

Weight. 11 lb Width. 8 1/2 in Height. 7 1/2 in Depth. 6 1/4 in

3. Power Supply.
The power supply for the wavemeter is normally a 6-volt accumulator external to the instrument. A Clip Battery Special No. 1 is also issued with the wavemeter which enables 6 volts to be tapped from a higher voltage accumulator.
This provides filament heating for the valve and dial lamp and also supplies a vibrator which is housed in the instrument for H.T. through a bridge-connected metal rectifier system.
The total current consumption is 1.1 amp. at 6 volts.

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

CHAPTER I GENERAL DESCRIPTION.
Purpose and facilities
Weights and dimensions
Table I - Weights and dimensions 
Power supply 
Technical description
(1) Principle of operation
(2) The wavemeter circuit 
(3) The power supply circuit
(4) Construction

CHAPTER 2 WORKING INSTRUCTIONS.
Preliminary
To set the wavemeter Class D. No. 1 to a given frequency 
To couple the wavemeter to a sender for receiver aerial 
To set a sender to a given frequency 
To set a receiver to a given frequency
Netting 
To determine the frequency of a received signal
Preliminary check on calibration of receiver or sender

CHAPTER 3 MAINTENANCE.
Scale alignment
To adjust the grid condenser C13A
To re-set the crystal oscillator output resistance control

APPENDIX I.
List of main components
 
DIAGRAMS.
Wavemeter Class D. No. 1, Circuit diagram.
Simplified diagram of wavemeter Class D. No. 1.
Valve connections.
Crystal connections.
Vibrator connections.
Wavemeter Class D. No. 1, diagram showing principle of operation.
Wavemeter Class D. No. 1, Front view.
Wavemeter Class D. No. 1, Internal view from above.
Wavemeter Class D. No. 1, Internal view from below.

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.