On Jul 9, 2007, at 2:59 AM, David Woolley wrote:
Bill Coleman wrote:
What you'd end up with for the "receiver" would be a Mixer and
clean DDS, followed by a high-speed, wide-range A/D converter.
Everything else
I don't understand why you write about such things as in the
future. There are several products on the amateur market, although
I don't know if any of them use a DDS VFO.
What I wrote about in 1995 was the entire receiver as a very simple
bit of hardware, and then lots of software.
I've seen several attempts at computer/radio integration, but they
all used far more hardware than I imagined. That's why I used the
future tense.
The telcos where doing direct digital conversion from analogue
carrier systems to multiple PCM channels a long time ago. I think
before your 1995 article.
The technology has been around a while. It's just waiting to be
applied to amateur radio....
Bill Coleman, AA4LR, PP-ASEL Mail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901
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