I have now tested my MFJ-1025/Phaser and it seems very
good at phasing away interference, especially on lower SW bands. It
functions on the upper MW band but needs modification to cover also
the lower MW band. It is amazing to almost completely remove Radio
Cristal here in Quito on 1380 kHz, it is located only a short distance
from my QTH, and instead be able to listen to the Colombians on that
frequency.
(Björn Malm, Ecuador, 29 Dec 2002, via SW Bulletin)
More info at HCDX Antenna Special at
http://www.hard-core-dx.com/nordicdx/antenna/special/mfj1026.html