Interesting update from Clifton Labs:
The review is here: http://www.cliftonlaboratories.com/Documents/Loop vs Loop Final-Final.pdf
The review is here: http://www.cliftonlaboratories.com/Documents/Loop vs Loop Final-Final.pdf
For the last year and a half, I've worked with Pixel Technologies in developing and supplying the low noise high performance amplifier used in its Pro-1B active loop antenna.
Until recently, my agreement kept my role with Pixel as a confidential matter, but recent Pixel promotional material discloses that a Clifton Laboratories amplifier is inside the Pro-1B. The amplifier, however, remains a special product only sold to Pixel and if you are interested in an amplifier module, I suggest you contact Pixel for price and availability.
Last fall, I completed an extensive data collection, with more than 500,000 individual signal strength measurements, comparing the performance of the Pro-1B with its most widely available competitor, Wellbrook's ALA 1530L antenna. I've completed analysis of the data and written a comparative review of these two loops. The review extends well beyond the signal-to-noise comparison of the two antennas, however, and provides my view of many other aspects of the two antennas.
I recognize that as the developer of the loop amplifier, I'm not a disinterested reviewer. I've done my best, however, to make honest measurements and to provide extensive details on my methodology. I've tried to distinguish places where an opinion is called for and those where the collected data is analyzed and identified the former as "my opinion" or "my view" and to supply reasons supporting my conclusions.