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)
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
