GPS Antenna

reduce the voltage to the lna? add a small risistor in series with the coax? maybe the lna is unstable?

up

Does it work with a 5m lead made of your cable? Otherwise is the group delay change affecting the module operation?

Alternatively, is your short cable just plain faulty?

Cheers.

Ken

Thanks for suggestions guys,

I have tried a 1R resistor in series with the signal wire, do you think it would be a good idea to add one to the GND rail as well to isolate it a bit? I have tried a few different cables and im sure I don't have a faulty one.. I have even tried cutting a piece of the original cable to try but no go. I am working on 2 of the same units, I managed to get one to work with a 1R resistor in series but its operation is not as good as norml... I have put it to rest for today, a fresh start tomorrow.

Regards

AJ

If it is very close ( Hi,

Hi Glenn

Actually it is very close, about 3 cm. I have been testing with re-radiating antenna and moving it away a bit form the antenna doesn't seem to make a lot of difference. I will try some shielding today to see if that makes any difference. I have also ordered a few inductors to see if that will help at all!

Thanks for your suggestion

regards

AJ