Click on the photos for a larger viewDDSv4 - $120 + $5 s/h
The DDSV4 VFO is a new oscillator based on the Analog Devices AD9859 DDS numerical oscillator and an Atmel ATMEGA16 microcontroller.
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Specifications
Power Req. |
Backlight off = 6 to 7VDC, 150mABacklight on = 6 to 7VDC, 240mA |
|
Drift |
30 – 40 Hz @ 10MHz for 5 min. warm-up, nil afterwards |
Output Freq. |
0 – 52 MHz |
|
Clock Reference Freq. |
25 MHz, multiplied X14 internally to 350MHz by the DDS |
Output Power |
800 mV into 50 Ohms |
|
Size |
1” X 2” (DDS Board)1.5” X 3” (Display). |
Harmonics |
Down 45dB or more |
|
Construction |
Surface Mount |
Freq. Control |
Rotary Encoder – 100Hz Step default |
|
Additional Controls |
Band, Fast Step (3kHz default) |
Features
User Selectable Modes - Ham, SWL, Signal Generator, or Audio
Oscillator. Ham Band Mode is the default
User Selectable IF Shift (Offset) Frequency. No IF Shift is the default.
Offset can be high or low side
User selectable step size. 100Hz and 3kHz fast step are the defaults for
the Ham band Mode.
Outputs to automatically select user provided filters.
SMA RF Connector.
2X16 Backlit Display. Backlighting can be disables to reduce current
requirement.
Display provides information on frequency, mode, step size, and offset
frequency.
Modular platform - user can change display, pushbuttons, or encoder.