Lassen IQ : works but does not find anything

[ITM]

Hi!

Eventually I managed to get messages from my Lassen IQ.

The problem is that it keeps sending me this : “$GPVTG,N*30”, even after half an hour.

I’m only using RX/TX B, which are both linked directly to my PIC18F.

As said in the datasheet, I linked RX/TX A to VCC (3.3) throught a 1kOhm resistor.

I use a standard antenna, that one: “Antenna GPS Ultra-Compact Embedded HFL for Lassen IQ (SKU#: ANT-EMB-HFL)”

I guess it’s correctly plugged in

What’s wrong? :S

Thanks.

[ITM]

That’s the deal : I only receive two satelittes signal, and I’m outside… The antenna is correctly plugged-in, both RX pins are connected to VCC via 100K resistor

I don’t understand what’s wrong, can you help?