FOR SALE: Collins VFO / Permeability Tuned Oscillator Model 70E3 Very good condition. Originally used with the Collins ARR-15 Receiver. Also used in model 51H-3 This is basically "unobtainium." In other words, you can't buy these PTOs anywhere. Looks like it's all there and in good shape. Reduced to $29.00 plus shipping Picture at: http://home.cfl.rr.com/happysurfer/radios.htm