[R-390] 390a frequency readout

[Bernie Nicholson]

the cosmos pto on one of my recievers has 4 linearity adjustments /turn I made a jig usiny the dial from a ten turn pot and using a HP5245 counter and a couple of sheets of graph paper  and after a few adjustment runs my reciever  after i calibrate it  on any particular band the frequency read out is within 100hz , I have also checked it against my racal /dana synthasized sig gen and that also supports the same conclusion  Who needs better accuracy than this