I've been using the RSP1 for several months now and it works flawlessly here. I'm using HDSDR, SDRUno, SDR#, and SDR console v3. Each program has its advantages but I use HDSDR most of the time because its ultra stable and IMO has the most effective filtering.
Antennas in use are a 130ft. homebrew double-bazooka @ 35ft, and a Doxytronics model 8020ca portable magnetic loop. Both work well with this receiver on HF.
No trouble with center spike, very little with images & birdies. I also use my RSP1 to monitor local public service in the 150-160mhz region, no trouble there either. It is as sensitive & selective as other receivers here (Radio Shack & Uniden scanners).
Computer is a Winbook TW700 7-inch tablet, running Windows 8.1. Using an Acer 17-inch eternal monitor for bigger display as needed.
So how do I get this great performance? Glad you asked
![Smile :)](./images/smilies/icon_e_smile.gif)
I also have all of the SDR programs which allow it (HDSDR & SDR#) set to automatically compensate for I & Q imbalance.
So all in all, I find this to be a very capable receiver and spectrum analyzer. Learn how to use the gain settings and when to use (or not) the LNA and you won't be disappointed.