[Elecraft] [K3] SWR meter unstable

[Eduardo González]

Hello friends.
I have a small issue with SWR meter.
If SWR > 1.5 aprox reading of SWR meter show erratic spikes over 3
while i'm talking or doing a tone. Spikes aren't proportional respect
to voice intensity. I have tested using dummy load and tuned antennas,
including dummy load with another impedance (100 ohm for example) so i
can get SWR > 1.5 readings. This problem is old, started few months
after purchase the equipment. Would be a RF loop back issue?. Has
anyone had the same problem? Setup is K3/100 with ATU. Problem is
present with or without ATU enabled

Edu YY4GMJ