He's talking about 1 megabit to 5 megabit data rates.
Not going to do more than a few kilobits with a sound card.
-- Lynn
On 3/27/2014 6:17 PM, Don Wilhelm wrote:
Neil,
If you are going to operate digital modes, you have a perfectly good
way to generate the digital stream.
It is the computer soundcard and the application that you will be using.
The computer soundcard is good for generating anything in the audio
range. There are several software applications that will produce
several types of audio waveforms. A web search will reveal several of
them.
But for your purposes, I would think that the software application
that you intend to use to generate the digital signal would be the
best thing to use.
73,
Don W3FPR
On 3/27/2014 7:41 PM, Niel Skousen wrote:
Good Evening All,
This is low power, just not strictly QRP operating. I'm looking for
input and advice ** off the list **
I'd like to do some experiments with QPSK and GMSK at 450 - 900 MHz,
and looking for advice on howto inexpensively do so since I dont
have digital modulation signal generator. I'd like to look at some
modulation sideband effects at +/- 5x the modulation frequency.
Ideally I'm looking at 5Mbps QPSK, but lower bandwidths (~1Mbps)
might work for me as similar answers to my question ( interference
suppression ).
I have an HP 8921 for Spectrum analysis and a decent scope, but no
good way to generate and decode the digital stream.
Any thoughts for on-the-cheap approach would be appreciated (eval
kits etc)
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