Invalid RMC messages from LG290P

Hi

I have a LG290P working in rover mode and am decoding RMC messages for latitude, longitude.
I observe a strange issue when working inside a room.
The character is set to ‘A’, indicating valid message, the fields <N/S> and <E/W> are also valid, but lattude and longitude values are wrong (They are about 25 Deg and 50 Deg wrong respectively).

It also gives the right value at times when i am outside, so how can i trust the receiver output if it outputs correct values sometimes and wrong values sometimes ?

Hi srinath

About your question. Could you provide your nmea log of test to me through email? I will check it and help you why it show like that. And test in room, maybe you receiver relay signal that also make receiver location sucessful, but this is position of repeater, not align with actual position of receiver’s antanna.Note: GNSS receiver should work in outside.

Q:How can i trust the receiver output if it outputs correct values sometimes and wrong values sometimes ?
A:Without any external interference,through observe this parameter is right.

Best regards.