开云体育

Hi Daniel
I would suggest? you run the U4B transmit program first for 30 minutes info in the manual? and then do the hardware test ...?
I would also suggest you put a 50 ohm resistor over the hf antenna pads while testing.
In some cases the hardware test is difficult to lock and it is aided by using a bit of tinfoil under a piece of paper? with the U4B on top of the paper so the gps antenna could work more effectively inside the house.. just use a simple dipole antenna for the gps with legs about 47mm and in a vee shape.
Dave VE3KCL