At $1,600, this kit is a little on the expensive side for most amateurs, but it’s an interesting indication of where things are going….Dan
Colorado Electronic Product Design, Inc. Introduces New Digital Radio Kit
Boulder, Colorado – August 29, 2008 â€“
Colorado Electronic Product Design (CEPD) introduces a digital radio kit consisting of three configurable printed circuit boards.
The Digital Radio Kit (DRK) is intended to aid in the development and test of algorithms and signal processing applications including:
- Digital radio, modulator/demodulator development
- Software defined radio
- High speed data acquisition and signal processing
- Audio data acquisition and signal processing
The system combines a PCI card, an FPGA signal processing card, and a down converting digital radio card. All three cards have connectors allowing them to stack, forming a digital radio system. The kit will operate in standalone mode or the PCI card can be attached to a computer.
The standard configuration for the digital radio card is the 75MHz to 150MHz band. The digital radio card is capable of transmitting and receiving RF signals. Filters, Low Noise Amplifiers, and mixers are socket-ed to simplify frequency changes. The card includes a frequency synthesizer LO and mixers for up and down conversion for transmitting and receiving. The card utilizes a 13-bit, 210 million samples per second (MSPS) analog-to-digital converter (ADC), a 14-bit, 400 MSPS digital-to-analog converter (DAC) and an audio codec.
I swapped some e-mail with these folks, and they assure me that with some component replacements, the DRK will cover HF frequencies. There is more information, including a block diagram, at http://www.cepdinc.com/DRK.htm