Charles, I don't think he was refering to the stationary amplifiers you described, but the portible ones (probably better described as pre-amplifiers) that sit between the antena and the receiver. I don't know anything about their effectiveness, especially indoors, but perhaps you do? Chip =20 > -----Original Message----- > From: gps-talkusers-bounce@xxxxxxxxxxxxx=20 > [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of=20 > Charles La Pierre > Sent: Thursday, May 27, 2004 11:37 PM > To: gps-talkusers@xxxxxxxxxxxxx > Subject: [gps-talkusers] Re: GPS Amplifiers >=20 > The problem is that the antenna which is picking up the=20 > signal is stationary outside the building and all you are=20 > getting is that position amplified indoors. This is great=20 > for a demo where you need a GPS signal but does not really=20 > pinpoint your position inside of the building. > Charles. >=20 > At 03:03 PM 5/27/2004, you wrote: > >Hi All > > > >I've read on various web sites about amplifying the received=20 > signal for=20 > >use indoors. Does anyone know whether any of these amps are=20 > serial and=20 > >are there any other issues which would make them=20 > incompatible with our software? > > > >Cheers > > > >Stephen >=20 > Charles M. La Pierre CTO > Sendero Group, LLC >=20 > Lat. 37 15' 25" N Lon: 121 53' 04" W >=20 >=20 >=20 >=20