My guess is that it does increase the performance of the antenna and this is why I'm saying it. With a plastic bodied telephone and a whip that does not have a decent counterpoise (the newer units are going to have a fractal antenna to allow transmission on cell phone bands and receipt of GPS signals to comply with the FCC requirement so the whip is not applicable with them). With the metal of the "battery antenna enhancer"....even if it was a piece of copper foil tape instead of the fancy looking geometric shape that they get to charge you for, there should be a better capacitive coupling into the hand of the person holding it. My guess is that the cell phone user's body becomes a human counterpoise electrically equivalent to a very lossy ground on the marconi cell phone antenna (loaded whip) along with the fact that the first electrical part of that is the foil tape itself. Half of a Marconi is the ground plane. Mike Kendall ----- Original Message ----- From: "Peter L. Peres" To: Sent: Tuesday, August 28, 2001 7:10 PM Subject: [OT] Internal Antenna baloney! > In addition to being baloney (it is not really), it may shape or distort > the field from the whip such that some part of it may or may not pass > though the void that in some people holds the brain. It may also distort > the far field such that you will have to face a particular direction to > get good contact in marginal areas. > > I would not say anything about this until I saw a radiation pattern > comparison. > > What I would say however is that metal bodied phones like Ericsson etc do > not need any of this. > > Peter > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu