Fair enough, but by walking around you are in fact calculating position by comparing a series of points.
The multi-elemented antennae such as the Yagi can be pretty directional within tens of degrees but there are so many confounding factors like signal reflection and absorption. When I lived in England they used to have television and radio license police who drove around in vans pointing at houses looking for signals they compared against a list of licensees to catch people operating receivers with out paying for the BBC.I don't know what technology they used but the signals are fairly weak and of course standing still. Dale Leavens, Cochrane Ontario Canada [EMAIL PROTECTED] Skype DaleLeavens Come and meet Aurora, Nakita and Nanook at our polar bear habitat. ----- Original Message ----- From: Dan Rossi To: [email protected] Sent: Tuesday, November 27, 2007 9:23 AM Subject: Re: [BlindHandyMan] radio direction finding project Dale, Actually you don't need triangulation to locate a transmitter. Not at least, if you can move. These fox hunts are done by walking around with a loop antenna and listening for signal strength. I think you have to get within five feet of the transmitter before it is considered a hit. -- Blue skies. Dan Rossi Carnegie Mellon University. E-Mail: [EMAIL PROTECTED] Tel: (412) 268-9081 [Non-text portions of this message have been removed]
