Some readers may be heartened to hear that the powered antennae provided a classic demonstration of the deceptive nature of relying on limited measured specifications to correlate with perceived sound quality. Tested True Easy to install. Amplifies weak FM signals. Tested False Eliminates multipath distortion. Improves stereo reception and sound quality.
Similar critiques apply to all the powered antennae.
Assuming a velocity factor of .82 for twinlead, the actual active length should have been 1.36m. The UHF results were sufficiently disappointing to not be included in these tests. Only the VHF section was fully tested.