[1000mp] "Click" or "pk" in 81920Hz steps at RX position

[Branko Miklavec]

I recive my rig FT1000MPMK 5 FIELD from HRO Salem.

But I'm not so happy because rig have a problem.

When I'm turning main vfo (or sub vfo) in rx, cw position I have every 81920Hz something like "click" or "pk" in my earphones.
This is hepening in all receiving range from100kHz to 30 MHz.
I write a formula for track that clicks:
690Hz+81920Hz×N         (N is 1,2,3,4,5,6,7,8.............)
690Hz can cange with pitc knob in front panel.

I try to: reset cpu, external power suply and withaut antena,
But the problem is still there.

Something abaut PLL mast work bad.

73's
Branko0