comparators that switch both legs of the signal to eliminate possible interference. 
Alan Shaw of Harbeth describes his approach here. And specifically mentions why the relays must be four pole.
Frank Van Alstine now manufactures his own comparator learning from the mistakes of others through his measurements. Information about it can be found here.
I agree with these engineers of the value of employing a controlled empirical approach over that of armchair speculations alone.
Alan Shaw of Harbeth describes his approach here. And specifically mentions why the relays must be four pole.
Frank Van Alstine now manufactures his own comparator learning from the mistakes of others through his measurements. Information about it can be found here.
I agree with these engineers of the value of employing a controlled empirical approach over that of armchair speculations alone.