I have a situation that if i do 3 or 4 circuits in my Jabiru, after i land my Radio transmission to the tower is unreadable, but if i increase the RPM to 2000, the signal is fine.
The Battery is new, and at present the plane is outside with a Solar charger attached.
The problem is not there after a longer flight, so it appears that the Battery is discharging at low RPM.
The other day, i was unreadable to the tower on final at 1500 RPM, but as soon as i taxied off and increased the RPM, the problem went away.
Also, at first startup the transmissions are fine but i am noticing that by the time i've done the run ups etc, my ready call to the tower is weak.
Was not using landing light on final.
No problem in cruise.
Any body else had this issue?