A later redesign and updated version of the famous 90651 Grid-Dip meter. It incompasses
two major changes over its predecessor a transistor DC amplifier and a taut band
meter. Overall sensitivity was increased with the solid-state DC amplifier. A taut
band meter eliminates meter sticking when a meter's pointer needle pegs in either
direction. As with the 90651 this was considered to be a Standard Grade dipper with
slightly reduced accuracy versus the 90661 and 90662 Industrial Grade models. The
"A" model made its appearance in the late 60's.|
The pictures were supplied by Jere Couch, N4DQ. Jere's unit came in the plastic carrying case similar to that shown in the 90652 pictures.