Tom – Colyn – Thanks for your inputs.

 

The reason I asked is, on my recent transcontinental odyssey, pretty much over the GAFA, (if you don’t know what the GAFA is, I’ll explain it off LML), both my Garmin 295 and AvMap EK IV lost satellite signals intermittently every few seconds, while the KLN89B happily continued to receive all available satellites. This went on for some time.

 

It is also a phenomenon which has arisen recently, as both have always received satellite signals without problem for the past four, and two years respectively.

 

Being portables, both GPS antennas are located on the instrument panel combing in full view of the sky.

 

I also took a newish HP PDA incorporating GPS with me and suction cupped it to the canopy and it had no problem receiving satellite signals over the GAFA or anywhere else.

 

I am aware that there are active and passive antennae for GPS.

 

I don’t have VOR ILS  - gave all that junk away a few years ago when I sold the Airbus.

 

Cheers

 

Dom