20 Jan 2012
I've been extremely busy since last fall and have not
found time to update this site. I'll try to post more frequently but things
remain busy here at Clifton Laboratories.
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 indentify the former as "my opinion" or "my view" and to
supply reasons supporting my conculsions.
You may read the review - it's a 17 page PDF document - at
Documents\Loop vs Loop
Final-Final.pdf or you may find the link on my
As the review indicates, a later analysis will compare the
two loops with a Z1501F active antenna and my wire inverted vee. A stratospheric
view of those results are that each antenna has its strengths and weaknesses and
there is no single antenna that is always best for all frequencies. I'll leave
the details, however, for that future review.