lost fix

[Gryphon2]

I have a Raymarine RL70C. Recently it has started to repeatedly tell me it has" lost fix".....and then straight away is OK again. It seems to make little difference where the sensor is sited.Any ideas? Even just being able to turn the bleeping alarm off would be good!

 

[nimbusgb]

Which GPS are you using?

Could be a connected fishfinder going duff.