I fired up my old 486 PC and tested a Radware DSP100 transceiver.

The DSP100 was an early attempt at a transceiver with a digital IF and
modulation/demodulation
stages. It was a direct conversion transceiver.,built on a plugin ISA board,
with a PLL/DDS synthesizer that
drove a Quadrature Mixer. Te two outputs of the quadrature mixer fed the
left and right channels of the computer sound card
which did the filtering and demodulation/modulation.

It was produced by Comer Communications in the 1980's. The hardware and
software was developed by two brothers, Alan and Brian Comer.

The sensitivity was fair and the software I have has some bugs, but it was a
gallant attempt at the first
generation of "software defined receiver".

Does anyone have one or know what happened to Comer communications or have
any experiences with the DSP100?
I have software versions 1.19 through 1.22. Does anyone have any later
versions?


73,

Mike N2MS