Good job Blacky. There could be something with the older units that makes them better for ilicit use than the newer ones. Can't see why to buy a bunch of them and at a pretty high price. Sounds fishy.

Airlines which OFFICIALLY DO NOT APPROVE the use of GPS receivers at ANY time during flight.

(*) Individual Pilots may allow GPS use. (It never hurts to ask the pilot on any flight. Oftentimes, cabin attendants say NO automatically. If the cabin attendant says "no" respectfully ask them to make your request to the pilot.)

* Alaska Airlines

* Air Tran

* America West Airlines

* American Airlines (Changed again as of October 2009)

* Britannia Airlines

* El Al Airlines (Israel)

* Frontier Airlines (as of June 2008)

* Hawaiian Airlines(*)

* Horizon Airlines(*)

* Iberia Airlines(*)

* Lufthansa Airlines

* Mexicana airlines

* Midway Express

* Monarch Airlines

* Ryanair (Irish) (as of January 2008)

* Spirit Airlines

* US Airways (was US Air) (as of December 2007)

* Varig Airlines

* Virgin Airlines (As of March 2007)

gpsinformation.net

Why? I've been in a small plane with a dash-mounted and a handheld gps - they didn't interfere with each other?

^

Just airline policy I suppose.

GPS itself is a receive-only system, so there really is no issue or possibility under any normal circumstances of one receiver interfering with another.

Now, there are GPS trackers that do transmit their locations which might possibly cause problems for the airplane electronics/navigation equipment.

Texas = friggin' hot = ladies' summertime fashions, ice cold beer, BBQ, and margaritas.

I'm in.

Nark!!

Trust your instincts Blacky. Good job.