[1000mp] 1000MP chirp on CW

[Antero Laikko]

Hi,

Having a chirp problem with FT1000MP.
When transmitting with a short hold delay and allowing the
TX to trip, the beginning of next dash or dit represents a clear chirp.
However, increasing hold delay time, and having the rig "on the air" allows
chirp-free signal.
Since mains voltage is very stable, I first thought there is a voltage drop
in the DC cables between the rig and power supply, and shortened these to
minimum. No improvement.
I suspect one of the oscillators might have a "local energy bank" capacitor
which doesn't recharge fast enough or cannot hold its charge level. But
which ????

Has anyone experience a similar problem / how was it fixed ?

Thanks in advance for help.

73,  Antero, OH2BEM