Of course, we like it because it is in an Altoid-like box. And because it is Direct Conversion. And because it is used for QRSS, with the output fed to an on-line grabber. But this one is EVEN BETTER because it uses a Polyakov detector!
Check out PA1GSJ’s receiver: http://www.qsl.net/dl1gsj/html/qrssrx30.html
View the output (live): http://www.qsl.net/dl1gsj/qrss/
More on Polyakov detectors: http://soldersmoke.blogspot.com/search?q=polyakov
I have some polyakov receiver circuits at: http://code.google.com/p/lemontree/downloads/list There are also a few other things such as magnetic loop antenna calculators.