Note
Available as a kit or fully assembled.
The Model DD-103 Universal Digital Dial works with any receiver and most transmitters by counting only the VFO signal. All of the VFO and band information for many receivers and transmitters is pre-programmed into the display's memory. This allows the operating frequency to be displayed by counting only the VFO, sometimes called PTO or LMO signal.
There is also a manual program mode that lets you program the dial for any receiver or transmitter (up to 32 bands) that is not pre-programmed. You can even use the 32 bands to manually program the unit for multiple receivers or transmitters. For example two 16 band, four 8 band, or any other combination totaling 32 or less can be programmed.
Each band can be individually calibrated to allow for crystals that have aged or any other error no matter where is comes from, to 10Hz accuracy. The calibration information is also stored in memory, so that any time you return to that band, the display is automatically calibrated. You only calibrate each band one time.
There is also a BAND “CTR” (COUNTER) that has no offset, that is available any time so the unit can double as a bench counter up to 40MHz. THE MODE CONTROL MUST BE FULLY COUNTERCLOCKWISE.
The DD-103 has two operating controls, BAND and MODE/CAL, on the front panel, and a CALIBRATE button on the rear. Both BAND and MODE/CAL have dual functions as determined by the CALIBRATE button.
The BAND selector is a 3 position switch that is used to select any one of up to 32 bands by stepping up or down until the desired band is reached. The switch should be returned to center when the desired band is reached.
The MODE/CAL control is a potentiometer that is used to select AM, CW, LSB or USB.
Power: 12 VAC/VDC.
