Re: XG3 and IMD testing

Posted by wayne burdick on Apr 15, 2011; 10:25pm
URL: http://elecraft.85.s1.nabble.com/XG3-device-tp6271930p6277828.html

And by the way, the XG1 and XG2 also have more or less square-wave  
output. This is where the harmonics come from that allow them to put  
out a useful signal on higher bands.

For the intended applications, this waveform is not an issue, because  
the receiver under test will virtually always have a low-pass filter  
at its antenna input.

73,
Wayne
N6KR


On Apr 15, 2011, at 3:19 PM, Wayne Burdick wrote:

> The XG3's phase noise is a constant -105 dBc/Hz. This is pretty good
> for a miniature, wide-range RF generator that runs from a 9-V battery,
> and great for MDS tests (sensitivity), signal tracing, filter
> alignment, and S-meter calibration. But it is not suited to high-level
> IMD testing of receivers like K3's. That requires a signal generator
> with a lower noise floor.
>
> 73,
> Wayne
> N6KR
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html