Indeed. I installed my last GPS receiver inside a locker and it works better than the old Raymarine one mounted on the deck. With modern circuitry, an external mounting is redundant.What's a "GPSR . ECEIVER"? If they can't get that bit right I'd stay well clear.
As noted above, it probably only has a ~£5 GPS module inside .. and by fitting one of those inside an AWB you wouldn't even have to waterproof it.
I believe it to be simpler than that for many of us. If the performance of your new indoor antenna is better than the performance of your old outdoor antenna, then the new antenna will always be better than the old antenna whatever the conditions. Whether your new antenna might work slightly better if it were mounted externally is not so relevant as, either way, performance is better than it was and you were happy enough before, presumably.If you want the best performance from a GPS, that means having outdoors.
Whether indoor performance is 'good enough' is like proving a negative.
You'll never know whether one day your GPS working a little bit better outdoors might be critical.
What's a "GPSR . ECEIVER"? If they can't get that bit right I'd stay well clear.
Why? If I am within 5 NM of where I am offshore I am OK, if I am within sight of land that goes down to 0.5NM, if I am picking up a mooring or coming along side I am not looking at the GPS but eyeballing it.If you want the best performance from a GPS, that means having outdoors.
Whether indoor performance is 'good enough' is like proving a negative.
You'll never know whether one day your GPS working a little bit better outdoors might be critical.