From: "Tom Del Rosso"
References: <email@example.com> <3DC14651.C34B82FE@mindless.com>
Subject: Re: Side effects of potting compound !
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
NNTP-Posting-Date: Sat, 02 Nov 2002 16:27:27 GMT
Organization: AT&T Worldnet
Date: Sat, 02 Nov 2002 16:27:27 GMT
"Bob Wilson" wrote in
> Ah, yes. The Airfone! The company I was with in the 80's was soing
> design work on the thing as well. It seemed half of GTE owned
> somehow involved with it. Mostly I recall the 20,000 RPM mini-fans
> of the modules used, that had a VERY low life expectancy due to their
Hmmm, was that fan in the battery charger in the cabin base station?
I was most impressed by the system of the credit card reader. The
short-range cordless phone radios and 900MHz air to ground radios and
the control units were all in cargo, with no connection to the cabin for
easy installation. When you inserted your credit card into the base
station, it was locked in until you returned the cordless handset. But
first the card was read and an electromagnet in the base turned on a
reed switch in the handset, enabling its radio. The credit card info
was transmitted via the acoustic modem in the base, through the handset,
to the control unit before the handset was released.
My exposure was at Antares in Minnesota which assembled and wrote the
software for the Airborne Control Unit and the Ground Control Unit. The
control units were designed by Equinox in New Jersey, which seemed to
consist of two guys and a battery powered wire wrap tool.