Air carrier Captain reported receiving a false glideslope on the ILS 9R Approach to ATL; which caused the autopilot to pitch up. The First Officer disconnected the autopilot and hand-flew the approach to a safe landing.

Narrative

While executing a visual approach to ATL Runway 9R using the ILS 9R approach; while on autopilot; the autopilot captured a false glideslope for 9R at 3;000 ft.; prior to the FAF; and the autopilot started to fly up to capture this false glideslope. The FO (First Officer); flying pilot; did very well and disconnected the autopilot; took over manually the flying; and continued to a safe landing on 9R. The reason for this report is that there have been at least 3 'false glideslope' incidents to me or my crew at ATL Runway 9R; and it makes me suspicious of that ILS NAVAID / approach setup. If we had been in solid IMC vs. VFR conditions; it would have been more of a problem to determine the 'false glideslope.'This event of the autopilot pitching up to follow a 'false glideslope' for the ILS 9R ATL was caused by a failure of the ILS 9R NAVAID Transmitter creating a secondary; or false glideslope. This has happened at least 3 times to me or my crew in the past 12 months; indicating the ILS 9R needs to be flight checked and better adjusted. FAA Flight Check needs to better calibrate the ILS to 9R in ATL; before a more major incident in IMC conditions happens.