On 10/30/2015 01:59 PM, Jim Brown wrote:
On Fri,10/30/2015 1:13 PM, Alan wrote:
I have a "Signal Hound" USB-SA-44B, which is a 1 Hz to 4.4 GHz
spectrum analyzer that uses a PC for power and the user interface. It
currently goes for $919. I've been pretty happy with it.
https://signalhound.com/
They also offer an optional USB-TG44A tracking generator for $599,
which I don't have.
Interesting. What's the dynamic range -- i.e., how much can you display
on-screen?
73, Jim K9YC
You can set the dB/div scale for pretty much anything you want. 40
dB/div gives 400 dB display range, but of course that's not useful.
With a -10 dBm signal from an HP 8656B signal generator at 18.116 MHz,
span = 10 kHz and resolution bandwidth = 3.2 Hz, I see that the noise is
a bit less than -110 dBm at the edges (away from the phase noise near
the carrier).
So >100 dB dynamic range with those settings.
With a narrow enough span you can set the RBW all the way down to 0.1
Hz, but at a really slow update rate. (e.g. 37 seconds with 100 Hz span)
One thing I like about this unit is that it covers all the way down to
low audio frequencies (1 Hz), which is rare in a microwave spectrum
analyzer.
Alan N1AL
______________________________________________________________
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
