Several have asked for details on the rotatable loop on my Bendix 555 receiver.
Attached is a photo. You can estimate the turns etc. Note the use of a standard phone jack for the mount. The loop is shielded. I've posted in the past construction details for a loop for 80 meters. I've enjoyed the Bendix, it has a S meter, BFO, and a "Sense" antenna.
http://k4che.com/DFloopstick/DFstickpg1.htm
Z