"Mark S. Holden" wrote:

starman wrote:


One of the nice features of the Wellbrook is being able to mount it with
a dual axis rotor so you can fine tune the reception angle. It's an
expensive option but that's what I would do to get the most out of it. I
wonder if anyone knows the circuit design for the loop's pre-amp? That's
probably what makes it perform so well.

The Wellbrook preamp is potted to make it tougher for someone to swipe
the design.

And any competent electronics outfit has already done so, if they were
interested in the design.

I've worked for numerous firms over the years and the number of competitor
products coming through the door for study and evaluation was astounding.

If it hasn't been mentioned already, there was a review in the 2002 Passport
regarding this antenna and the dual axis rotor scheme by Chuck Rippel. It may
have appeared in other additions as well.

dxAce
Michigan
USA