dstar_digital : D-Star * Digital
- An International discussion group for D-STAR Digital Amateur Radio. Radios, Repeaters, Gateways, Internet, Setup, Mobile and Portable radios, Cloning Software, icf files,
- Digital Voice Transceiver Project
This Project began to explore the use of the DVSI AMBE 2020 voice compression chip and also the ADF7021 single chip VHF RF Transceiver from Analog Devices.
Digital Voice Dongle Project
- This project is to create a small board that when plugged into a PC USB port, will provide an interface to a DVSI digital voice VOCODER chip.
Interdigital bandpass filter designer
- Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength