Hi John,
I don't think you quite got it yet. All of those types of "Dongles"
have no frontend filtering and no gain control (AGC). Basically it is a
"diode" (so to speak) looking at the spectrum from DC to Daylight, even
though they have a limited range. So, yes, there will be birdies and
aliasing issues. There is no software from a unit's manufacturer for
the "All Frequency" observation mode that Amateur radio and other
hobbyists are using it for.
Aside from all that , they do come in a plastic case and there is some
excelent control software, notably Simon Browns HDSDR, that can control
a number of these types of umits. As for spectrum software, the best
one is Spectrum Labs which can take I/Q input. See the respective web
sites for more information. Both of these packages are FREE.
http://www.hdsdr.de/hardware.html The SDR software hardware page
http://www.qsl.net/dl4yhf/spectra1.html The Spectrum Lab software.
Bill....WB6BNQ
J. Forster wrote:
OK. Thanks everybody. Can you please reccomend a make/model?
I'd like something like:
<75 to >1300 MHz
USB
Ability to function as a crude SA.
Not crawling w/ birdies or aliasing issues.
Will run on Win XP.
Demod selecttable for all modes at all frequencies.
In a package, rather than a loose PCB.
<$150
Prefer:
SMA rather than RCA or F
Receiver and SW from same vendor.
Suggestions, please.
Thanks,
-John
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