Hallicrafter 509 image shifted horizontally

[Electronic M]

Originally Posted by old_tv_nut

if the image is a single image (it is) and is not skewed diagonally (it's not) [as shown], the frequency is correct. No need to try measuring it. Only the phase is wrong.

I agree with old TV nut.

Some counters are tricked by the non-sinusoidal horizontal waveforms so I typically adjust horizontal frequency by first measuring scope divisions between leading edges of horizontal sync pluses in a digital composite video source (DVD player, DTV converter, etc) then adjusting the vintage TV H osc for the same number of scope horizontal divisions between peaks (and usually the peak slightly higher than the hump on synchroguide based circuits) works well.... Probably not needed here, but useful if your frequency counter gets confused on complex waveshapes.