GPS antenna mounting under cowl?
 

I'd love to hear opinions or see pics of GPS antenna mounts under the cowl. Thanks guys (and you know who :D).

I (like many others) copied Dan's install. Working great with my GNS-430 after a few years of flying.

Same here, but I made mine wider to accommodate two antennas. If you're using the stock hinge-pin method of cowl attachment on top, make sure to leave room to the the pins in and out past the antennas.

Jury is out
 

On how well a WAAS antenna will work in that location however.

Frank

More info...
 

Here's another thread with some pertinent information.

http://www.vansairforce.com/communit...ad.php?t=21305

Getting ready to mount one for a 430W.....

Is that jury still out?

Makes me nervus
 

When I bought my airplane it had one under the cowl. Seems like an elegant solution, but I started worrying after thinking about it a while.

Although they may hold up well, those antenna are not designed for the heat and thermal cycling of the engine area. I feel safer with it inside the cockpit.

I have one double side taped to the top of the glare shield, just like my weather antenna. Sky access is at least as good as the under cowl solution.

The under cowl antenna is still there, but I don't use it.

Had mine for 500+ hrs
 

and still works great. Regarding the heat issue, have you ever tried to put your hand on an antenna mounted on the glare shield when it has been sitting in the sun for a few hours? Ouch! I don't think it gets much hotter under the cowl with all the airflow going thru there.

I probably worry too much
 

Probably true.

I'm used to thinking of the reliability of electronics in terms of thousands or tens of thousands of hours. That thinking doesn't necessarily apply here.

Still, after your comment I'll probably cover both antenna with something white